treatment of rectal diseases, hemorrhoid. proctologist pointing pen rectum pathologies on an anatomical model concept

abscess anal anatomical anatomy anus bacteria cancer care child coat colitis colon colonoscopy coloproctology colorectal constipation cracks diagnosis disease doctor erosions exam fissure fistula health healthcare hemorrhoid human illness incontinence inflamed inflammation lower medical medicine microbes model pain pathology physiology polyp problem proctologist rectal rectum structures symptoms teenager treatment vascular