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Tom Michael Ganten](https://www.onedoc.ch/en/gastroenterologist/zurich/pc3wl/dr-med-tom-michael-ganten)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Gastroklinik - Giesshübelstrasse](https://www.onedoc.ch/en/medical-practice/zurich/e7s7/gastroklinik-giesshubelstrasse) Giesshübelstrasse 45 8045 Zürich Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pc3wl/dr-med-tom-michael-ganten) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Annual check up | preventive medical checkup](https://www.onedoc.ch/en/annual-check-up-preventive-medical-checkup/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Liver cancer](https://www.onedoc.ch/en/liver-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich)View more *chevron\_left* Wed 16 Sep *chevron\_right* View more appointments *error\_outline* An error occurred while loading time slots   [Retry](https://www.onedoc.ch) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Annual check up | preventive medical checkup](https://www.onedoc.ch/en/annual-check-up-preventive-medical-checkup/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Liver cancer](https://www.onedoc.ch/en/liver-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pc1ud/dr-med-cornelia-daniloaea) ### [Dr. med. Cornelia Daniloaea](https://www.onedoc.ch/en/gastroenterologist/zurich/pc1ud/dr-med-cornelia-daniloaea)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Oerlikon](https://www.onedoc.ch/en/medical-practice/zurich/e9b0/central-praxis-oerlikon) Hofwiesenstrasse 349 8050 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pc1ud/dr-med-cornelia-daniloaea) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more *chevron\_left* Wed 16 Sep *chevron\_right* View more appointments *error\_outline* An error occurred while loading time slots   [Retry](https://www.onedoc.ch) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/visceral-surgeon/zurich/pcxzq/prof-dr-med-ralph-peterli) ### [Prof. Dr. med. Ralph Peterli](https://www.onedoc.ch/en/visceral-surgeon/zurich/pcxzq/prof-dr-med-ralph-peterli)  [Visceral surgeon](https://www.onedoc.ch/en/visceral-surgeon/zurich) [ViszeraMed AG (Standort Klinik Hirslanden Zürich)](https://www.onedoc.ch/en/hospital/zurich/ebc64/viszeramed-ag-standort-klinik-hirslanden-zurich) Witellikerstrasse 40 8032 Zürich Accepts new patients [Book an appointment](https://www.onedoc.ch/en/visceral-surgeon/zurich/pcxzq/prof-dr-med-ralph-peterli) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Bariatric surgery](https://www.onedoc.ch/en/bariatric-surgery/zurich), [Obesity](https://www.onedoc.ch/en/obesity/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich)View more *chevron\_left* Wed 16 Sep *chevron\_right* View more appointments *error\_outline* An error occurred while loading time slots   [Retry](https://www.onedoc.ch) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Bariatric surgery](https://www.onedoc.ch/en/bariatric-surgery/zurich), [Obesity](https://www.onedoc.ch/en/obesity/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich)View more [](https://www.onedoc.ch/en/visceral-surgeon/lausanne/pc3l1/dr-amaniel-kefleyesus) ### [Dr. Amaniel Kefleyesus](https://www.onedoc.ch/en/visceral-surgeon/lausanne/pc3l1/dr-amaniel-kefleyesus)  [Visceral surgeon](https://www.onedoc.ch/en/visceral-surgeon/lausanne) Cabinet du Dr. Amaniel Kefleyesus - Centre des Maladies Digestives Avenue André-Schnetzler 1 1003 Lausanne  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/visceral-surgeon/lausanne/pc3l1/dr-amaniel-kefleyesus) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/lausanne), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/lausanne), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/lausanne), [Anal incontinence](https://www.onedoc.ch/en/anal-incontinence/lausanne), [Colorectal surgery](https://www.onedoc.ch/en/colorectal-surgery/lausanne), [Proctological surgery](https://www.onedoc.ch/en/proctological-surgery/lausanne), [Robotic surgery](https://www.onedoc.ch/en/robotic-surgery/lausanne), [Inguinal hernia](https://www.onedoc.ch/en/inguinal-hernia/lausanne), [Hernia surgery](https://www.onedoc.ch/en/hernia-surgery/lausanne)View more *chevron\_left* Wed 16 Sep *chevron\_right* View more appointments *error\_outline* An error occurred while loading time slots   [Retry](https://www.onedoc.ch) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/lausanne), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/lausanne), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/lausanne), [Anal incontinence](https://www.onedoc.ch/en/anal-incontinence/lausanne), [Colorectal surgery](https://www.onedoc.ch/en/colorectal-surgery/lausanne), [Proctological surgery](https://www.onedoc.ch/en/proctological-surgery/lausanne), [Robotic surgery](https://www.onedoc.ch/en/robotic-surgery/lausanne), [Inguinal hernia](https://www.onedoc.ch/en/inguinal-hernia/lausanne), [Hernia surgery](https://www.onedoc.ch/en/hernia-surgery/lausanne)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pc4zg/dr-med-rene-roth) ### [Dr. med. René Roth](https://www.onedoc.ch/en/gastroenterologist/zurich/pc4zg/dr-med-rene-roth)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Löwenstrasse](https://www.onedoc.ch/en/medical-practice/zurich/ewj3/central-praxis-lowenstrasse) Löwenstrasse 32 8001 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pc4zg/dr-med-rene-roth) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/general-practitioner-gp/vernier/pcm1f/dr-med-ernest-rwagasore) ### [Dr. med. Ernest Rwagasore](https://www.onedoc.ch/en/general-practitioner-gp/vernier/pcm1f/dr-med-ernest-rwagasore) [General practitioner (GP)](https://www.onedoc.ch/en/general-practitioner-gp/vernier) Cabinet Dr Ernest Rwagasore Rue du Grand Bay 15 1220 Vernier  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/general-practitioner-gp/vernier/pcm1f/dr-med-ernest-rwagasore) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/vernier), [Annual check up | preventive medical checkup](https://www.onedoc.ch/en/annual-check-up-preventive-medical-checkup/vernier), [Blood pressure test](https://www.onedoc.ch/en/blood-pressure-test/vernier), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/vernier), [HPV | Humane papillomavirus vaccination](https://www.onedoc.ch/en/hpv-humane-papillomavirus-vaccination/vernier), [Vaccination advice](https://www.onedoc.ch/en/vaccination-advice/vernier), [Vaccination booklet update](https://www.onedoc.ch/en/vaccination-booklet-update/vernier)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/vernier), [Annual check up | preventive medical checkup](https://www.onedoc.ch/en/annual-check-up-preventive-medical-checkup/vernier), [Blood pressure test](https://www.onedoc.ch/en/blood-pressure-test/vernier), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/vernier), [HPV | Humane papillomavirus vaccination](https://www.onedoc.ch/en/hpv-humane-papillomavirus-vaccination/vernier), [Vaccination advice](https://www.onedoc.ch/en/vaccination-advice/vernier), [Vaccination booklet update](https://www.onedoc.ch/en/vaccination-booklet-update/vernier)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pcvt3/dr-med-tom-voller) ### [Dr. med. Tom Völler](https://www.onedoc.ch/en/gastroenterologist/zurich/pcvt3/dr-med-tom-voller)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Gastroklinik - Seestrasse](https://www.onedoc.ch/en/medical-practice/zurich/e7t8/gastroklinik-seestrasse) Seestrasse 90 8002 Zürich Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pcvt3/dr-med-tom-voller) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/kusnacht/pc1ay/dr-med-jean-pierre-richterich) ### [Dr. med. Jean-Pierre Richterich](https://www.onedoc.ch/en/gastroenterologist/kusnacht/pc1ay/dr-med-jean-pierre-richterich) [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/kusnacht) [GutSense](https://www.onedoc.ch/en/medical-practice/kusnacht/ebedt/gutsense) Kohlrainstrasse 6C 8700 Küsnacht Video consultations available Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/kusnacht/pc1ay/dr-med-jean-pierre-richterich) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/kusnacht), [Constipation](https://www.onedoc.ch/en/constipation/kusnacht), [Gluten intolerance screening](https://www.onedoc.ch/en/gluten-intolerance-screening/kusnacht), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/kusnacht), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/kusnacht), [Reflux check | Heartburn](https://www.onedoc.ch/en/reflux-check-heartburn/kusnacht), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/kusnacht), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/kusnacht), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/kusnacht), [Lactose intolerance test](https://www.onedoc.ch/en/lactose-intolerance-test/kusnacht)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/kusnacht), [Constipation](https://www.onedoc.ch/en/constipation/kusnacht), [Gluten intolerance screening](https://www.onedoc.ch/en/gluten-intolerance-screening/kusnacht), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/kusnacht), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/kusnacht), [Reflux check | Heartburn](https://www.onedoc.ch/en/reflux-check-heartburn/kusnacht), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/kusnacht), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/kusnacht), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/kusnacht), [Lactose intolerance test](https://www.onedoc.ch/en/lactose-intolerance-test/kusnacht)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7z/dr-med-stephan-bosshard) ### [Dr. med. Stephan Bosshard](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7z/dr-med-stephan-bosshard)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Oerlikon](https://www.onedoc.ch/en/medical-practice/zurich/e9b0/central-praxis-oerlikon) Hofwiesenstrasse 349 8050 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7z/dr-med-stephan-bosshard) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pcp2y/dr-med-agni-markopoulou) ### [Dr. med. Agni Markopoulou](https://www.onedoc.ch/en/gastroenterologist/zurich/pcp2y/dr-med-agni-markopoulou)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Löwenstrasse](https://www.onedoc.ch/en/medical-practice/zurich/ewj3/central-praxis-lowenstrasse) Löwenstrasse 32 8001 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pcp2y/dr-med-agni-markopoulou) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pc1uc/dr-med-cornelia-daniloaea) ### [Dr. med. Cornelia Daniloaea](https://www.onedoc.ch/en/gastroenterologist/zurich/pc1uc/dr-med-cornelia-daniloaea)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Löwenstrasse](https://www.onedoc.ch/en/medical-practice/zurich/ewj3/central-praxis-lowenstrasse) Löwenstrasse 32 8001 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pc1uc/dr-med-cornelia-daniloaea) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pbn6x/dr-med-mathias-dolder) ### [Dr. med. Mathias Dolder](https://www.onedoc.ch/en/gastroenterologist/zurich/pbn6x/dr-med-mathias-dolder)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Löwenstrasse](https://www.onedoc.ch/en/medical-practice/zurich/ewj3/central-praxis-lowenstrasse) Löwenstrasse 32 8001 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pbn6x/dr-med-mathias-dolder) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pc4sz/dr-med-kathrin-overbeck) ### [Dr. med. Kathrin Overbeck](https://www.onedoc.ch/en/gastroenterologist/zurich/pc4sz/dr-med-kathrin-overbeck)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Gastrozentrum Hirslanden Nord](https://www.onedoc.ch/en/medical-practice/zurich/ebcvo/gastrozentrum-hirslanden-nord) Witellikerstrasse 40 8032 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pc4sz/dr-med-kathrin-overbeck) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Abdominal ultrasound](https://www.onedoc.ch/en/abdominal-ultrasound/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Stomach cancer specialist | Gastro-oncology specialist](https://www.onedoc.ch/en/stomach-cancer-specialist-gastro-oncology-specialist/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Liver cancer](https://www.onedoc.ch/en/liver-cancer/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Abdominal ultrasound](https://www.onedoc.ch/en/abdominal-ultrasound/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Stomach cancer specialist | Gastro-oncology specialist](https://www.onedoc.ch/en/stomach-cancer-specialist-gastro-oncology-specialist/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Liver cancer](https://www.onedoc.ch/en/liver-cancer/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7x/dr-med-mathias-dolder) ### [Dr. med. Mathias Dolder](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7x/dr-med-mathias-dolder)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Oerlikon](https://www.onedoc.ch/en/medical-practice/zurich/e9b0/central-praxis-oerlikon) Hofwiesenstrasse 349 8050 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7x/dr-med-mathias-dolder) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7w/dr-med-saskia-budenbender) ### [Dr. med. Saskia Büdenbender](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7w/dr-med-saskia-budenbender)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Oerlikon](https://www.onedoc.ch/en/medical-practice/zurich/e9b0/central-praxis-oerlikon) Hofwiesenstrasse 349 8050 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7w/dr-med-saskia-budenbender) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7t/dr-med-stephan-bosshard) ### [Dr. med. Stephan Bosshard](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7t/dr-med-stephan-bosshard)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Löwenstrasse](https://www.onedoc.ch/en/medical-practice/zurich/ewj3/central-praxis-lowenstrasse) Löwenstrasse 32 8001 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pco7t/dr-med-stephan-bosshard) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pb54l/dr-med-roger-wanner) ### [Dr. med. Roger Wanner](https://www.onedoc.ch/en/gastroenterologist/zurich/pb54l/dr-med-roger-wanner)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Gastroenterologie Zürich AG](https://www.onedoc.ch/en/medical-practice/zurich/e1wf/gastroenterologie-zurich-ag) Seefeldstrasse 214 8008 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pb54l/dr-med-roger-wanner) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich), [Gluten intolerance screening](https://www.onedoc.ch/en/gluten-intolerance-screening/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Reflux check | Heartburn](https://www.onedoc.ch/en/reflux-check-heartburn/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich), [Gluten intolerance screening](https://www.onedoc.ch/en/gluten-intolerance-screening/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Reflux check | Heartburn](https://www.onedoc.ch/en/reflux-check-heartburn/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich)View more [](https://www.onedoc.ch/en/gastroenterologist/zurich/pcp23/dr-med-houman-azam) ### [Dr. med. Houman Azam](https://www.onedoc.ch/en/gastroenterologist/zurich/pcp23/dr-med-houman-azam)  [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/zurich) [Central-Praxis - Oerlikon](https://www.onedoc.ch/en/medical-practice/zurich/e9b0/central-praxis-oerlikon) Hofwiesenstrasse 349 8050 Zürich  Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/zurich/pcp23/dr-med-houman-azam) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/zurich), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/zurich), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/zurich), [Esophageal cancer](https://www.onedoc.ch/en/esophageal-cancer/zurich), [Rectal cancer](https://www.onedoc.ch/en/rectal-cancer/zurich), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/zurich), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/zurich), [Anal abscess | Anal fistula](https://www.onedoc.ch/en/anal-abscess-anal-fistula/zurich), [Anal fissure](https://www.onedoc.ch/en/anal-fissure/zurich), [Endoscopy](https://www.onedoc.ch/en/endoscopy/zurich), [Hemorrhoids](https://www.onedoc.ch/en/hemorrhoids/zurich), [Stomach ulcer](https://www.onedoc.ch/en/stomach-ulcer/zurich), [Constipation](https://www.onedoc.ch/en/constipation/zurich)View more [](https://www.onedoc.ch/en/visceral-surgeon/bern/pczix/dr-med-beat-muggli) ### [Dr. med. Beat Muggli](https://www.onedoc.ch/en/visceral-surgeon/bern/pczix/dr-med-beat-muggli)  [Visceral surgeon](https://www.onedoc.ch/en/visceral-surgeon/bern) [Beat Muggli Chirurgie](https://www.onedoc.ch/en/medical-practice/bern/ebdsv/beat-muggli-chirurgie) Bremgartenstrasse 115A 3012 Bern Accepts new patients [Book an appointment](https://www.onedoc.ch/en/visceral-surgeon/bern/pczix/dr-med-beat-muggli) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/bern), [Reflux check | Heartburn](https://www.onedoc.ch/en/reflux-check-heartburn/bern), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/bern), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/bern), [Hernia surgery](https://www.onedoc.ch/en/hernia-surgery/bern)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/bern), [Reflux check | Heartburn](https://www.onedoc.ch/en/reflux-check-heartburn/bern), [Stomach cancer](https://www.onedoc.ch/en/stomach-cancer/bern), [Anal cancer](https://www.onedoc.ch/en/anal-cancer/bern), [Hernia surgery](https://www.onedoc.ch/en/hernia-surgery/bern)View more [](https://www.onedoc.ch/en/gastroenterologist/thalwil/pc0z5/dr-med-saadia-taha) ### [Dr. med. Saadia Taha](https://www.onedoc.ch/en/gastroenterologist/thalwil/pc0z5/dr-med-saadia-taha) [Gastroenterologist](https://www.onedoc.ch/en/gastroenterologist/thalwil) [Magendarm Thalwil AG](https://www.onedoc.ch/en/medical-practice/thalwil/ewqh/magendarm-thalwil-ag) Zürcherstrasse 61 8800 Thalwil Accepts new patients [Book an appointment](https://www.onedoc.ch/en/gastroenterologist/thalwil/pc0z5/dr-med-saadia-taha) Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/thalwil), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/thalwil), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/thalwil)View more Expertises:[Colon cancer](https://www.onedoc.ch/en/colon-cancer/thalwil), [Colorectal cancer screening](https://www.onedoc.ch/en/colorectal-cancer-screening/thalwil), [Colonoscopy](https://www.onedoc.ch/en/colonoscopy/thalwil)View more 1[2](https://www.onedoc.ch/en/colon-cancer/switzerland?page=2)[3](https://www.onedoc.ch/en/colon-cancer/switzerland?page=3) 1. [OneDoc](https://www.onedoc.ch/en/)/ 2. Colon cancer *keyboard\_arrow\_right* ## What is colon cancer? The colon, also known as the large intestine, is the final part of the digestive tract, where water and minerals are reabsorbed from digested food and waste is stored before elimination. Colon cancer, sometimes called colorectal cancer when it also involves the rectum, develops when certain cells grow abnormally. This process often begins with adenomatous polyps, small growths on the inner wall of the colon, some of which can turn into malignant tumours if not detected and removed. *keyboard\_arrow\_right* ## What are the symptoms of colon cancer? Colon cancer can cause warning signs that are sometimes subtle or even absent in the early stages. Common symptoms include blood in the stool, which may be bright red or dark and tarry and is not always visible to the naked eye, and changes in bowel habits such as persistent diarrhoea or constipation lasting several weeks. Abdominal pain or cramps, general fatigue, anaemia and unexplained weight loss can also occur. *keyboard\_arrow\_right* ## What are the risk factors for colon cancer? Several factors increase the risk of colon cancer. The risk rises with age, especially after 50, and having a close relative with colon cancer or adenomatous polyps also raises the likelihood. Certain precancerous polyps have a high potential to become malignant and often go unnoticed without screening, while chronic inflammatory bowel diseases such as Crohn's disease or ulcerative colitis can promote the development of abnormal cells in the colon. *keyboard\_arrow\_right* ## Is blood in the stool always a sign of colon cancer? Blood in the stool does not always indicate colon cancer, as haemorrhoids are a common cause of rectal bleeding. Bleeding from haemorrhoids is usually bright red, visible on toilet paper or on the surface of the stool, and may be accompanied by itching or burning. However, darker blood mixed with the stool, or unusual and persistent abdominal pain, calls for a more thorough medical evaluation to determine the cause. *keyboard\_arrow\_right* ## What methods are used to screen for colon cancer? Screening allows colon cancer or precancerous lesions to be detected early, before they become malignant. The faecal immunochemical test (FIT) is easy to do at home, where a stool sample is collected and sent to a laboratory to check for invisible blood, and a positive result indicates the need for further examination. A colonoscopy is the most comprehensive method, allowing a specialist to examine the inside of the colon directly and remove any suspicious growths for analysis. *keyboard\_arrow\_right* ## How can colon cancer be prevented? Even with risk factors, several habits can lower the risk of colon cancer. A healthy diet helps, with more fibre from fruit, vegetables, legumes and whole grains, limited red and processed meat, and less sugar and saturated fat. Avoiding tobacco and excessive alcohol, exercising regularly and attending recommended medical check-ups and screening also reduce the risk. ### Download the OneDoc app Book an appointment online with a doctor, dentist, or therapist near you in Switzerland. The OneDoc app lets you manage all your medical appointments from your smartphone, anytime and anywhere.  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