Mucormycosis is a rare complication of sarcoidosis. We report only the
third instance of mucormycosis occurring in a patient with sarcoidosi
s. Corticosteroid therapy, even short courses of less than one month d
uration, appears to be a major risk factor for the development of muco
rmycosis. Mucormycosis should be suspected upon the development of sig
ns and symptoms of chronic sinusitis, necrotic nasal discharge, propto
sis or periorbital edema. Mucormycosis is confirmed on routine hematox
ylin and eosin stains by the identification of tissue invasion by the
broad, aseptate mucor fungi. Prompt identification of the infection is
essential to reduce morbidity and prevent mortality.