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 ICD-O: 9210/0 DiseasesDB 34033 eMedicine article/1256477 MeSH D015831
They generally occur at the end of the growth plates of long bones, often at joints. They most commonly form at the shoulder or the knee but have been known to occur in the long bones of the forearm (i.e. the radius and ulna).
Osteochondroma is a benign tumor that contains both bone and cartilage and usually occurs near the end of a long bone. This tumor, one of the most common benign bone tumors, takes the form of a cartilage-capped bony spur or outgrowth on the surface of the bone. It is sometimes referred to as osteocartilaginous exostosis.
On most occasions the tumors grow outward from the legs or arms. However, very few cases have been reported with the bone spur growing inward, sometimes requiring surgery.
Osteochondromas are most often, upon diagnosis, simply monitored through periodic x-rays. Those tumors that grow large enough to irritate surrounding muscles, tendons, or tissues are usually removed by surgery.
- Trevor disease
- Humpath #2790 (Pathology images)
- MHE Research Foundation/Multiple Osteochondroma Website
- American Academy of Orthopedic Surgeons
Connective tissue neoplasm: Osseous and Chondromatous tumors (ICD-O 9180–9269) (C40–C41/D16, 170/213) Diaphysis Metaphysis Epiphysis Other/ungrouped Osteochondrodysplasia (Q77–Q78, 756.4–756.5) Osteodysplasia/
(including dwarfism)OsteochondromaOther dwarfism
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