Osteochondromatosis: A condition that is characterized by multiple benign tumors of cartilage, called osteochondromas, projecting from bone, most often from near the ends of long bones. In a small proportion of cases, an osteochondroma may become malignant. Also known as multiple exostoses. The condition can be hereditary, in which case it is called hereditary multiple exostoses (HMS).
Reviewed on 12/27/2018
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