Multiple hereditary osteochondroma

Multiple osteochondroma disease or multiple exostosis is less common than solitary osteochondroma. It is a bone dysplasia that can form bone bulges of varying sizes on the bone. Multiple hereditary osteochondroma has three characteristics: ① it is hereditary ② bone shortening or deformity ③ the incidence of malignant chondrosarcoma is high. Multiple osteochondroma disease or multiple exostosis is less common than solitary osteochondroma. It is a bone dysplasia that can form bone bulges of varying sizes on the bone. As an autosomal dominant hereditary disease, most patients have a family genetic history [3]. There are many names for this disease, sometimes called hereditary deformed cartilage dysplasia, or diaphyseal continuum. The latter mainly refers to the abnormal shape of the entire affected bone. In severe cases, the bones of all cartilage internalized bones have varying degrees of abnormality. The most common sites are the long tubular bones adjacent to the knee and ankle, which are bilateral and symmetrical.

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