<prompt> All of the following statements about pseudohypoparathyroidtom are true, except -Decrease Serum PTHDecrease Serum calciumIncrease Serum phosphateAlbrights hereditary osteodystrophy  <response>: Answer is option 1 Increase in serum PTH Pseudohypoparathyroidtom leads to end organ resistance to parathormone which in turn leads to decrease in serum Ca and increase in serum phosphate. Due to this negative feedback hyperplasia of parathyroid occurs and increase in parathormone secretion occurs Ref Harrison 17e p2394 