title: An unusual perforation of the sigmoid colon: a case report.
mesh_terms: D000293:Adolescent; D005547:Foreign Bodies / Q000150:complications*; D005548:Foreign-Body Migration / Q000150:complications*; D006801:Humans; D007416:Intestinal Perforation / Q000209:etiology*; D008297:Male; D012007:Rectum; D012810:Sigmoid Diseases / Q000209:etiology*