large intestine highlighted on the silhouette of a human

abdominal aganglionosis anatomical anatomy angiodysplasia appendicitis appendix biology body bowel cancer chronic colitis colon colonoscopy colorectal constipation crohn diarrhea digestion digestive disease diverticulitis diverticulosis functional gut health healthy highlight highlighted hirschsprung human ileus illustration inflamed inflammation internal intestine intestines intussusception irritable large medical medicine megacolon orange organ pain polyp pseudomembranous science silhouette stomach syndrome system ulcerative