title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 21-1991. A 13-year-old boy with a destructive lesion of the left mastoid bone.
mesh_terms: D000293:Adolescent; D004803:Eosinophilic Granuloma / Q000175:diagnosis / Q000473:pathology*; D006644:Histiocytes / Q000473:pathology; D006801:Humans; D008297:Male; D008416:Mastoid; D013701:Temporal Bone / Q000473:pathology