Granulomatous nephritis: A rare presentation of juvenile-onset sarcoidosis.

Sarcoidosis is rare in children. Incidence and prevalence of sarcoidosis in India are not known. Renal involvement in childhood sarcoidosis is further rare with no clear data about prevalence. Here we report a case of a 13-year-old girl who presented with sarcoidosis with multi-system involvement including renal sarcoidosis. She initially presented with pyrexia of unknown origin and cervical lymphadenopathy - evaluation of which led to diagnosis of sarcoidosis. Later, after development of pulmonary involvement, she was treated with oral prednisolone and azathioprine. She again defaulted on medicines and later presented with renal failure and was diagnosed with a renal sarcoidosis. She was treated with oral prednisolone and mycophenolate mofetil with which she gradually improved with normal renal functions.