[Giant parathyroid adenoma presenting with bone pain]

Primary hyperparathyroidism is a quite frequent disorder however, giant parathyroid adenoma is a rare entity. We described a 39-year old woman presenting with lower extremities bone pain within the recent 3 years. She had been receiving levothyroxin during the past 10 years due to hypothyroidism, meanwhile, she had a bulge right thyroid lobe. Laboratory examinations revealed she was euthyroid, however, scanning showed parathyroid adenoma. During surgery, an adenoma measured 2x3x6cm, weighted 22gr was resected. Giant parathyroid adenoma present with non-characteristic symptoms, thus, routine laboratory measurements including serum calcium and phosphorous should be proposed for suspected individuals