crest syndrome – esophageal achalasia – esophageal spasm, diffuse – gastroesophageal reflux – plummer-vinson syndrome – diverticulosis, esophageal – esophageal and gastric varices – esophageal atresia – esophageal cyst – esophageal fistula – tracheoesophageal fistula – esophageal neoplasms – esophageal perforation – mallory-weiss syndrome – esophageal stenosis – esophagitis – esophagitis, peptic – gastroenteritis – appendicitis – cholera morbus – colitis – colitis, ischemic – colitis, microscopic – colitis, collagenous – colitis, lymphocytic – colitis, ulcerative – proctocolitis – dysentery – dysentery, amebic – dysentery, bacillary – enteritis – duodenitis – ileitis – pouchitis – enterocolitis – enterocolitis, necrotizing – enterocolitis, neutropenic – enterocolitis, pseudomembranous – esophagitis – esophagitis, peptic – gastritis – gastritis, atrophic – gastritis, hypertrophic – inflammatory bowel diseases – colitis, ulcerative – crohn disease – mucositis – proctitis – proctocolitis – gastrointestinal neoplasms – esophageal neoplasms – gastrointestinal stromal tumors – intestinal neoplasms – cecal neoplasms – appendiceal neoplasms – colorectal neoplasms – colonic neoplasms – adenomatous polyposis coli – gardner syndrome – sigmoid neoplasms – colorectal neoplasms, hereditary nonpolyposis – rectal neoplasms – anus neoplasms – anal gland neoplasms – duodenal neoplasms – ileal neoplasms – immunoproliferative small intestinal disease – jejunal neoplasms – stomach neoplasms – zollinger-ellison syndrome – hernia – hernia, abdominal – gastroschisis – hernia, femoral – hernia, inguinal – hernia, ventral – hernia, umbilical – hernia, diaphragmatic – hernia, diaphragmatic, traumatic – hernia, hiatal – hernia, obturator – intestinal diseases – cecal diseases – appendicitis – cecal neoplasms – appendiceal neoplasms – colonic diseases – colitis – colitis, ischemic – colitis, microscopic – colitis, collagenous – colitis, lymphocytic – colitis, ulcerative – proctocolitis – colonic diseases, functional – colonic pseudo-obstruction – irritable bowel syndrome – colorectal neoplasms – colonic neoplasms – adenomatous polyposis coli – gardner syndrome – sigmoid neoplasms – colorectal neoplasms, hereditary nonpolyposis – diverticulosis, colonic – diverticulitis, colonic – megacolon – hirschsprung disease – megacolon, toxic – sigmoid diseases – proctocolitis – sigmoid neoplasms – duodenal diseases – duodenal neoplasms – duodenal obstruction – superior mesenteric artery syndrome – duodenitis – duodenogastric reflux – peptic ulcer – duodenal ulcer – peptic ulcer perforation – dysentery – dysentery, amebic – dysentery, bacillary – enteritis – duodenitis – ileitis – pouchitis – enterocolitis – enterocolitis, necrotizing – enterocolitis, neutropenic – enterocolitis, pseudomembranous – hiv enteropathy – ileal diseases – ileal neoplasms – ileitis – pouchitis – inflammatory bowel diseases –