Non-Caseating Granulamatus Nephritis: Rare Sign of Sarcoidosis

Sarcoidosis is chronic multisystem granulomatous disease. It can rarely cause renal structural and functional damage. Renal impairment is mostly due to the calcium metabolism and associated with hypercalciuria, nephrolithiasis and nephrocalcinosis. Non-caseating granulomatous nephritis can also be seen in few patients. We diagnosed non-caseating granulomatous nephritis with renal biopsy in a 50-year-old female pulmonary sarcoidosis case. Steroid treatment was immediately started and there was a significant decrease in proteinuria and creatinine after a month. Proteinuria and serum creatinine increase are important in patients with sarcoidosis and treatment must be started immediately to prevent end-stage renal failure.