Teiary hyperparathyroidism is-: (A) High PO4 level with metastasis, (B) Secondary hyperparathyroidism with CRF, (C) Primary hyperparathyroidism with low Ca" levels, (D) Secondary hyperparathyroidism with chief cell adenoma
Answer is D. Ans. is 'd' i.e., Secondary hyperparathyroidism with chief cell adenoma o Davidson states "In very small propoion of cases of secondary hyperparathyroidism continuous stimulation of the parathyroid may result in adenoma formation and autonomous PTH secretion. This is known as teiary hyperparathyroidism".