[Parathyroid and bone. Secondary hyperparathyroidism after renal transplantation].

Serum parathyroid hormone concentrations decrease progressively during the first 3 to 6 month after successful renal transplantation. However 1 year after transplantation, persistent hyperparathyroidism is common. Hypercalcemia due to persistent hyperparathyroidism cause graft dysfunction and cardiovascular calcification. Renal transplant recipients with persistent hyperparathyroidism need treatment with vitamin D and calcium, in some cases parathyroidectomy has to be considered.