Anal fistula

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Anal fistula
Simple anal fistula. Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology
ICD-10	K 60.3
ICD-9	565.1


Anal fistula Microchapters
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Patient Information

Overview

Pathophysiology

Causes

Differentiating Anal fistula from other Diseases

Epidemiology and Demographics

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Treatment

Workup

Anal fistula On the Web

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cited articles

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CME Programs

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American Roentgen Ray Society Images of Anal fistula All Images X-rays Echo & Ultrasound CT Images MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Anal fistula

CDC on Anal fistula

Anal fistula in the news

Blogs on Anal fistula</small>

Directions to Hospitals Treating Anal fistula

Risk calculators and risk factors for Anal fistula

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

Synonyms and keywords: Fistula-in-ano

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