Medicine Endocrinology 67f60f0a True statement about primary hyperparathyroidism- A Adenoma commonest cause B serum calcium C Surgery if biochemical finding is abnormal in asymptomatic patient D MIBG isotope is useful in localization of tumor High-Yield Explanation Solitary adenoma common cause around 80% of primary hyperparathyroidism Ref - ( Harrison 17 pg 2380)