Volume 13, Issue 2 pp. 73-77
Full Access

Pathogenesis and medical treatment of secondary hyperparathyroidism

Masafumi Fukagawa MD

Masafumi Fukagawa MD

First Department of Internal Medicine, University of Tokyo School of Medicine, Tokyo, Japan

Search for more papers by this author
Kiyoshi Kurokawa MD

Corresponding Author

Kiyoshi Kurokawa MD

Tokai University Faculty of Medicine, Kanagawa, Japan

Dean's Office, Tokai University Faculty of Medicine, Boseidai, Isehara-shi, Kanagawa 259-11, JapanSearch for more papers by this author

Abstract

Control of hyperparathyroidism is a major goal of the management of bone diseases in chronic dialysis patients. Severity of hyperparathyroidism has been evaluated mainly by the level of parathyroid hormone (PTH), however, parathyroid size can be another critical marker. Patients with larger parathyroid glands are usually more resistant to calcitriol pulse therapy than those with smaller glands. Large parathyroid glands with nodular hyperplasia are composed of cells more resistant to calcitriol due to lower density of calcitriol receptors. Responsiveness to calcitriol therapy was restored by selective destruction of large parathyroid glands (> 0.5 cm3) by ethanol injections under ultrasonographic guidance. Direct injections of calcitriol solution into enlarged glands were also effective in suppressing PTH and restoring responsiveness to calcitriol. These data suggest that size of parathyroid glands reflects the resistance to calcitriol and that prevention of parathyroid hyperplasia is mandatory for the successful medical management of hyperparathyroidism in chronic renal failure. Semin. Surg. Oncol. 13:73–77. © 1997 Wiley-Liss, Inc.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.