title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 39-1998. A 13-year-old girl with a relapsing-remitting neurologic disorder.
mesh_terms: D000293:Adolescent; D001706:Biopsy; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology*; D002561:Cerebrovascular Disorders / Q000209:etiology; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D017241:MELAS Syndrome / Q000150:complications / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle / Q000000981:diagnostic imaging; D009132:Muscles / Q000000981:diagnostic imaging / Q000473:pathology*; D012008:Recurrence; D012640:Seizures / Q000209:etiology; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography