[Blastomycosis in Morocco: imported mycosis]

Blastomycosis is a rare case. We report a first Moroccan case. A 41-year-old male presented with a 6-month history of dyspnea, fever and significant chest pain associated with night sweats and weight loss. The physical examination disclosed a firm painful paravertebral mass. The chest radiograph demonstrated a left apical opacity. The thoracic scan showed parenchymal infiltration of the apico-dorsal segment of the left upper lobe with vertebral and costal lytic lesions. Surgical biopsy showed granulomatous inflammation with giant-cell intracytoplasmic inclusions. Fungal studies yielded Blastomyces dermatitidis which responded excellently to ketoconazole. Outcome has been excellent at 3.5 years months follow-up. The clinical and radiographic presentation of blastomycosis is non-specific and can be mistaken for a neoplasm. Delay in diagnosis is common.