Abstract
Brown tumor is a focal bone lesion caused by primary or secondary hyperparathyroidism. We describe a case of brown tumor presenting bone cyst-like shadow on X-ray at the right radius and tibia associated with primary hyperparathyroidism, in a 34-year-old woman with general fatigue and bone pain of the right forearm and leg. The diagnosis was suggested by radiological and biochenmical findings. The excision of a parathyroid adenoma normalized the metabolic status, but the bone lesions had not improved at the follow-up 12 months after parathyroidectomy. Therefore, surgical resection of the only tibia bone lesion was performed and the radius bone lesion was observed conservatively to confirm the identification of development into bone cyst-like brown tumor. Radiological findings of the tibia bone lesion and right leg pain improved, but the radius bone lesion did not change and the right forearm pain remained. We propose that additional surgical treatment should be performed for bone lesions after parathyroidectomy in bone cyst-like brown tumors with symptoms.
