title: Malignant degeneration of hereditary multiple exostosis: a case history.
abstract: Hereditary multiple exostosis is not an uncommon condition; and must be watched for malignant degeneration. A case is reported which has both typical and atypical characteristics. A young male presented with painless metaphyseal lumps, but in addition had a suspicious ischial mass which, when further evaluated, was found to be malignant.
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis / Q000473:pathology*; D002812:Chondroma / Q000175:diagnosis / Q000473:pathology*; D002813:Chondrosarcoma / Q000175:diagnosis / Q000473:pathology*; D005097:Exostoses, Multiple Hereditary / Q000235:genetics / Q000473:pathology*; D006801:Humans; D007512:Ischium / Q000473:pathology*; D008297:Male