title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 24-1991. A 16-year-old boy with orthostatic weakness and hematochezia.
mesh_terms: D000293:Adolescent; D001808:Blood Vessels / Q000473:pathology; D003937:Diagnosis, Differential; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D007583:Jejunum / Q000098:blood supply* / Q000473:pathology; D008297:Male; D008467:Meckel Diverticulum / Q000175:diagnosis; D012421:Rupture