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Osteochondroma

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Comments:
High power view showing benign chondrocytes in the cartilaginous cap of an osteochondroma. Most osteochondromas arise as solitary lesions. About 15% of patients have multiple osteochondromas (hereditary multiple exostoses) an autosomal dominant disorder characterized by germline mutations in EXT1 or EXT2 tumor suppressor genes.

slide 9 of 17