Brown tumor of the maxilla and mandible: progressive mandibular brown tumor after removal of parathyroid adenoma.

Brown tumor is one of the lesions that develop in patients with hyperparathyroidism (HPT), and it occasionally affects the jaw bones. Histopathologically, it is difficult to differentiate from other giant cell lesions. A clinical diagnosis of this tumor is made with the finding of HPT. Parathyroidectomy to control HPT is the treatment of first choice for brown tumor because the normalization of parathyroid function should lead to a reduction in size or disappearance of the tumor. We report a rare case of brown tumors arising in both the maxilla and mandible of a patient with HPT in whom one of the tumors enlarged after removal of parathyroid adenoma.

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