SHORT REPORTSA case of severe hypercalcemia with acute renal failure in sarcoidosis: a diagnostic challenge for the emergency departmentVolpicelli, Giovanni; Mussa, Alessandro; Frascisco, MauroAuthor Information Department of Emergency Medicine, San Luigi Hospital, Orbassano, Turin, Italy Correspondence and requests for reprints to Giovanni Volpicelli, S.C.D.O. Medicina d'Urgenza, Ospedale San Luigi da Orbassano, Regione Gonzole 10, 10043 Torino, Italia Tel: +39 11 9026603; fax: +39 11 9026764; e-mail: [email protected] Received 17 December 2004 Revised 9 September 2005 Accepted 13 September 2005 European Journal of Emergency Medicine: December 2005 - Volume 12 - Issue 6 - p 320-321 Buy Abstract We present and discuss the case of a man admitted to our emergency room because of severe hypercalcemia and renal failure with maintained diuresis. We diagnosed a relapse of sarcoidosis, manifesting as hypercalcemia and renal failure, based on a history of lung sarcoidosis. This is a rare complication of sarcoidosis, due to granulomatous production of vitamin D. This mechanism may have been exacerbated by exposure of sunlight. The initial treatment of the patient was directed towards lowering the circulating calcium level through hyperhydration and forced diuresis, with secondary control of granulomatous activity using corticosteroid therapy. The patient was discharged after 7 days with normal levels of serum calcium, urinary calcium excretion and serum creatinine. Recognition of this rare cause of hypercalcemia is a challenge for the emergency physician. © 2005 Lippincott Williams & Wilkins, Inc.