A 38-year-old woman with primary hyperparathyroidism with calvarial masses
Brown Tumor of Hyperparathyroidism
Brown tumors (BT) are reactive osteolytic lesions caused by primary or secondary hyperparathyroidism.
BT can occur as solitary or multiple lesions. The lesions may appear in any bone but are most frequently found in facial bones and jaws, sternum, pelvis, ribs and femur.