a bony protuberance covered by a cap of cartilage arising usually from the end of a long bone, most commonly around the knee or shoulder. It is due to overgrowth of cartilage at the edge of the physis (growth plate) of growing bones. The protuberance may be flattened (sessile) or stalklike (see exostosis) and usually appears before the age of 30, with patients complaining of either pain or a lump. There is a small incidence (1–2% in solitary lesions, higher if multiple) of malignant transformation of the cartilage cap into a chondrosarcoma. If the lump causes symptoms or continues to grow in an adult, it should be excised.

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  • Osteochondroma — Classification and external resources Lateral radiograph of the knee demonstrating ossification in the peritendinous tissues in a patient with osteochondroma. ICD 10 C40 C41 …   Wikipedia

  • osteochondroma — ▪ medicine also called  exostosis        solitary benign tumour that consists partly of cartilage and partly of bone. Osteochondromas are common and may develop spontaneously following trauma or may have a hereditary basis. No treatment is… …   Universalium

  • osteochondroma — noun A benign tumor consisting of bone or cartilage …   Wiktionary

  • Osteochondroma — An abnormal, solitary, benign growth of bone and cartilage, typically at the end of a long bone. Osteochondromas are usually discovered in persons 15 to 25 years of age. They are typically detected when the area is injured, or when they become… …   Medical dictionary

  • osteochondroma — n. benign tumor of the bone or cartilage (Medicine) …   English contemporary dictionary

  • osteochondroma — noun benign tumor containing both bone and cartilage; usually occurs near the end of a long bone • Hypernyms: ↑benign tumor, ↑benign tumour, ↑nonmalignant tumor, ↑nonmalignant tumour, ↑nonmalignant neoplasm …   Useful english dictionary

  • Остеохондрома (Osteochondroma, Множ. Osteochondromatd) — опухоль кости, образующаяся из хрящевых клеток. Она представляет собой бесцветную массу, которая чаще всего образуется в возрасте от 10 до 25 лет на эпифизе длинной трубчатой кости. Так как часть этих опухолей при отсутствии их лечения может… …   Медицинские термины

  • fibrosing osteochondroma — a tumor containing the elements of osteoma, chondroma, and fibroma …   Medical dictionary

  • osteocartilaginous exostosis — osteochondroma …   Medical dictionary

  • остеохондрома — (osteochondroma; остео + греч. chondros хрящ + ома) см. Экзостоз костно хрящевой …   Большой медицинский словарь

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