| Osteochondroma
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Etiology
•Unknown.
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Pathogenesis
•Believed to be the result of displaced fragments of the
growth plate causing a displaced epiphysis to grow in an anomalous
position.,
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Epidemiology
•Three times more common in males than females.
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General Gross Description
•Also known as an exostosis.
•Benign lesion composed of a stalk and a rounded bony lesion, capped by
cartilage.
•Most freqently seen near the ends of long bones.
•Irregularly mushroom shaped lesions, from 1-20 centimeters in size.
•Examples:
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General Microscopic Description
•External surface is made of cartilage.
•Inner portion composed of bone, often with a marrow cavity.
•Both the bone and the cartilage are histologically benign.
•Examples:
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References
• Cotran RS, Kumar V, Robbins SL: Robbins Pathologic Basis of Disease. 5th edition. Philadelphia, W.B. Saunders, 1994, pp. 1237
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| Osteochondroma
| | Synopsis by: T.V. Rajan M.D. Ph.D. (T1X000M92100)[66]
| |