On routine life insurance screening, an asymptomatic 45-year-old male is found to have a serum calcium level of 12.5 mg/dL. Serum is obtained for immunoreactive parathyroid hormone level and this is 400 mEq/mL (normal range < 64mEq/mL). These findings are most consistent with a diagnosis of which of the following?
A. Primary hyperparathyroidism
B. Secondary hyperparathyroidism
C. Tertiary hyperparathyroidism
D. Ectopic hyperparathyroidism
Answer:A
On routine life insurance screening, an asymptomatic 45-year-old male is found to have a serum calcium level of 12.5 mg/dL. Serum is obtained for immunoreactive parathyroid hormone level and this is 400 mEq/mL (normal range < 64mEq/mL). These findings are most consistent with a diagnosis of which of the following?
A. Primary hyperparathyroidism B. Secondary hyperparathyroidism C. Tertiary hyperparathyroidism D. Ectopic hyperparathyroidism