Brown tumor

Brown tumor
Brown tumours of the hands in a patient with hyperparathyroidism.

The brown tumor is a bone lesion that arises in settings of excess osteoclast activity, such as hyperparathyroidism. They are a form of osteitis fibrosa cystica. It is not a neoplasm, but rather simply a mass. It most commonly affects the maxilla and mandible, though any bone may be affected.[1] Brown tumours are radiolucent on x-ray.

  1. ^ Meydan N, Barutca S, Guney E, Boylu S, Savk O, Culhaci N, Ayhan M (June 2006). "Brown tumors mimicking bone metastases". Journal of the National Medical Association. 98 (6): 950–3. PMC 2569361. PMID 16775919.
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