[Sarcoidosis disclosed by renal insufficiency (3 cases)].

Sarcoidosis was found in three patients referred for etiologic diagnosis of chronic or rapidly progressive renal failure. One patient presented as an isolated interstitial nephropathy and renal biopsy showed granulomatosis. The two other patients had hypercalcemia. In one, hyperparathyroidism was discussed and cervicotomy disclosed a sarcoidosic adenopathy. Under corticosteroid therapy, renal function improved in each of the three patients. It is pointed out that accurate diagnosis of this setting is of significance since effective therapy is possible.