title: Reversible renal failure from isolated granulomatous renal sarcoidosis.
abstract: A patient presented with a 6 month history of progessive renal failure. Serum creatinine was 7.1 mg/100 ml, creatinine clearance 4 ml/minute and hematocrit 22%. Skin tests for tuberculosis, trichophyton, SK/SD and candida were all unreactive and all cultures were negative or showed normal growth. A renal biopsy revealed non-caseating epithelial granulomas and foreign body multinucleated giant cells. No deposits or micro-organisms were seen on electron microscopy. Bone marrow and lymph node biopsies were unremarkable and no lung pathology was present. Therapy with systemic prednisone produced a dramatic improvement with serum creatinine diminishing to 1.3 mg/100 ml, creatinine clearance increasing to 81 ml/minute and hematocrit improving to 39%. A search of the literature has failed to reveal similar reports of reversible renal failure from isolated granulomatous renal sarcoidosis.
mesh_terms: D000328:Adult; D001706:Biopsy; D003404:Creatinine / Q000097:blood / Q000652:urine; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology; D007674:Kidney Diseases / Q000150:complications* / Q000188:drug therapy / Q000473:pathology; D007676:Kidney Failure, Chronic / Q000188:drug therapy / Q000209:etiology*; D011241:Prednisone / Q000627:therapeutic use; D012507:Sarcoidosis / Q000150:complications* / Q000188:drug therapy / Q000473:pathology
chemical_list: D003404:Creatinine; D011241:Prednisone