Surgical treatment of secondary hyperparathyroidism in patients with chronic renal failure: reevaluation of indications for parathyroidectomy.

Abstract

On reviewing the preoperative clinical and laboratory findings and the surgical response seen in our series of 32 patients with renal hyperparathyroidism, the indication for parathyroidectomy was reevaluated. During the 5-year period from 1975 to 1979, parathyroid resection was performed in 9 patients who had various conditions for which surgery had been thought indicated. During the following period from January 1980 to March 1985, parathyroidectomy was carried out on 23 patients all of whom had roentgenologic evidence of generalized fibrous osteitis except for two whose indication for surgery was an elevation of the serum alkaline phosphatase level more than 45 KA units. The resected parathyroid glands had increased to 1 g or more in total weight in all the 25 patients who showed distinct postoperative improvement. Laboratory evidence indicating the presence of generalized fibrous osteitis, such as subperiosteal resorption on phalanx roentgenograms and high serum alkaline phosphatase level, along with marked elevation of the plasma immunoreactive parathyroid hormone level, proved to be a good indicator for medically uncontrollable secondary hyperparathyroidism. Fracture, heterotopic calcification, pruritus or persistent hypercalcemia was not a parameter of severe hyperparathyroidism warranting parathyroid resection, unless there was concomitant evidence of fibrous osteitis. The preoperative use of the recently developed noninvasive techniques for parathyroid localization also proved to be useful in detecting the parathyroid glands large enough to fulfill the requirements for parathyroidectomy.