title: Spontaneous internal biliary fistula, obstructive and nonobstructive types: twenty-year review of 55 cases.
mesh_terms: D000368:Aged; D001658:Biliary Fistula / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D002769:Cholelithiasis / Q000150:complications*; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications