15 True or False. Chondrosarcoma occurs more frequently in older adults. Osteochondroma Radiology Reference Article Radiopaedia Org Osteochondroma osteocartilaginous exostosis is a benign cartilage capped bony neoplasm arising on the external surface of bone containing a marrow cavity that is continuous with that. . People and Age Occurs in people aged under 20 with a male to female ratio of. Osteochondroma Osteoclastoma giant cell Endochroma Osteochondroma Most common benign bone tumor Frequently located in metaphyseal portion of long bones particularly leg. Into a tumor called malignant osteosarcoma. A hereditary condition causes multiple osteochondromas in some children. Osteochondroma Osteochondroma is a common non-cancerous bone tumor that develops in the growing bones of children. Lesion can either be sessile or pedunculated. A rheumatologist specializes in diagnosing and treating diseases and disord...