Toxic megacolon

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Toxic Megacolon Microchapters
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Differentiating Toxic Megacolon from other Diseases

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Synonyms and keywords: Megacolon toxicum

Overview

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Esophagus	Esophagitis (Candidal) - Boerhaave syndrome - UES (Zenker's diverticulum) - LES (Barrett's esophagus, Mallory-Weiss syndrome) - Esophageal motility disorder (Nutcracker esophagus, Achalasia, Diffuse esophageal spasm, GERD) - Esophageal stricture
Stomach	Peptic (gastric) ulcer - Gastritis (Atrophic, Ménétrier's disease) - Gastroenteritis - Dyspepsia - Pyloric stenosis - Achlorhydria - Gastroparesis - Gastroptosis - Portal hypertensive gastropathy - Gastric antral vascular ectasia - Gastric dumping syndrome

Duodenum/ileum	Peptic (duodenal) ulcer - Duodenitis - Ileitis
Enteritis & colitis/ enterocolitis	noninfective: IBD (Crohn's disease, Ulcerative colitis) - noninfective gastroenteritis infective: Pseudomembranous colitis
Vascular	Abdominal angina - Mesenteric ischemia - Ischemic colitis - Angiodysplasia
Malabsorption	Coeliac - Tropical sprue - Blind loop syndrome - Whipple's - Short bowel syndrome - Steatorrhea
Motility/ functional	Ileus/Bowel obstruction (Intussusception, Volvulus) - Constipation - Diarrhea Functional colonic disease (IBS, Intestinal pseudoobstruction/Ogilvie syndrome)
Rectum/anus	Proctalgia fugax - Anal fissure/Anal fistula - Anal abscess - Rectal prolapse - Proctitis (Radiation proctitis)
Other	Diverticulitis/Diverticulosis - Megacolon/Toxic megacolon - Appendicitis

Liver/hepatitis	Alcoholic liver disease - Liver failure (Hepatic encephalopathy, Acute liver failure) - Cirrhosis - autoimmune (PBC, Autoimmune hepatitis) - Liver abscess - NASH - Fatty liver - Peliosis hepatis - Hepatic veno-occlusive disease - Portal hypertension - Hepatorenal syndrome
Gallbladder	Gallstones - common bile duct (Choledocholithiasis, Biliary dyskinesia) - Cholecystitis - Cholesterolosis - Rokitansky-Aschoff sinuses - Postcholecystectomy syndrome
Biliary tree	Cholangitis (PSC, Ascending) - Cholestasis/Mirizzi's syndrome - Biliary fistula
Pancreatic	Pancreatitis (Acute, Chronic, Hereditary) - Pancreatic pseudocyst - Exocrine pancreatic insufficiency - Pancreatic fistula