Pulmonary mucormycosis is an opportunistic infection manifested by a fatal angioinvasive fungal pneumonia in immunocompromised patients or those suffering from uncontrolled diabetes. The radiologic findings are nonspecific, but there have been several reports of cases of pulmonary mucormycosis in which characteristic endobronchial lesions were present, with a more indolent clinical course in diabetic patients. We describe a case of pulmonary mucormycosis in a diabetic patient in whom endobronchial involvement was apparent.