[Glomerulonephritis in sarcoidosis]

The renal involvement in sarcoidosis can be demonstrated as nephrocalcinosis, nephrolithiasis, granulomatous nephritis, and glomerulonephritis. The clinical signs of a renal manifestation are inferior than the morphological findings, so that the reported frequency of 9-25% is an approximate value. In the literature the glomerular changes are rare. In the case of glomerulonephritis the membranous form is dominating; an extracapillar-proliferative glomerulonephritis is described in only 3 cases in the literature. The course of a 16-year-old male patient with an extracapillar-proliferative glomerulonephritis and M. Boeck is described in detail. After a prednisolone therapy for 2 years, which was introduced by methylprednisolone at 1000 mg for 3 days, the renal function was improved continuously.