Dilemma in primary hyperparathyroidism with multiple brown tumors.

Primary hyperparathyroidism (PHPT) is a disease characterized by excessive secretion of parathormone. During the disease, bone loss occurs, particularly depending on the resorption of the skeletal system. One of the complications of PHPT is fibrotic, cystic bony changes which are called a brown tumor (BT). Skeletal manifestations in the form of BTs are rare, and according to literature studies, it occurs in <2% of patients suffering from any form of HPT. As it is a rare disease and multiple benign lesions may simulate a malignant neoplasm and pose a real challenge for the clinician in its differential diagnosis. We present the case of a 35-year-old man who was evaluated for multiple lytic expansile lesions with a strong suspicion of malignancy and fibrous dysplasia but turned out to be a case of PHPT. [ABSTRACT FROM AUTHOR]