title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 7-1980.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004424:Ear Canal; D004803:Eosinophilic Granuloma / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D008297:Male; D013701:Temporal Bone / Q000473:pathology