Reversal of the histology of bone after parathyroidectomy in patients with hyperparathyroidism.

Hyperparathyroidism is commonly seen in patients with end-stage renal disease and less commonly in the primary form. The skeletal manifestations of hyperparathyroidism are the same in both forms and are well described in the literature. We treated a patient from each category. Multiple bony lesions and pathologic fractures were observed. The clinical presentations and radiologic and histologic findings confirmed the diagnosis of hyperparathyroidism and osteitis fibrosa cystica in both patients. Subtotal excisions of the parathyroid glands were done in both patients. Appropriate treatment of the bony lesions and pathologic fractures resulted in healing. Histologic evaluation of the bony lesions indicated an osteoblastic or healing response. The reversal of the histologic pattern in just 5 days and 16 days after parathyroidectomy was noted. In treating such patients, physicians should consider parathyroidectomy as an aid in the overall management of patients.