Question

chronic renal failure will result in: secondary hyperparathyroidism primary hyperthyroidism primary hypoparathyroidism primary hyperparathyroidism

Explanation:

Chronic renal failure leads to impaired phosphate excretion and decreased activation of vitamin D, causing hypocalcemia. This stimulates the parathyroid glands to secrete more parathyroid hormone (PTH), which is secondary hyperparathyroidism (as the cause is renal dysfunction, not a primary parathyroid disorder). Primary hyperthyroidism is thyroid - related, primary hypoparathyroidism is a primary parathyroid defect with low PTH, and primary hyperparathyroidism is a primary parathyroid overproduction of PTH (not due to renal issues).

Answer:

A. Secondary Hyperparathyroidism