11-04-2006, 09:15 PM
A 58-year-old man with a history of diabetes mellitus has noted the presence of bone pain, especially of his hands, for the past 6 months. On physical examination there is no swelling or redness of his hands, and the range of motion is slightly decreased, but there is no joint deformity. Laboratory studies show sodium 139 mmol/L, potassium 4.0 mmol/L, chloride 98 mmol/L, C02 22 mmol/L, glucose 153 mg/dL, creatinine 7.8 mg/dL, calcium 7.8 mg/dL, phosphorus 5.7 mg/dL, total protein 6.2 g/dL, and albumin 4.0 g/dL. Which of the following conditions is this man most likely to have?
A Adrenal adenoma
B Medullary thyroid carcinoma
C Extra-adrenal pheochromocytoma
D Parathyroid hyperplasia
E Pituitary adenoma
A Adrenal adenoma
B Medullary thyroid carcinoma
C Extra-adrenal pheochromocytoma
D Parathyroid hyperplasia
E Pituitary adenoma