Synchronous oral paracoccidioidomycosis and esophageal carcinoma.

Paracoccidioidomycosis is the most common deep mycosis in South America and is caused by Paracoccidioides brasiliensis (P. brasiliensis), a thermally dimorphic fungus. Infections usually occur by inhalation of conidia, which more often cause respiratory, mucocutaneous, and lymph nodal changes. Chronic features of this mycosis can mimic diverse infections and malignancies and constitute diagnosis challenges. Squamous cell carcinoma deserves special attention in this setting. We describe the case of a patient with synchronous diagnosis of oral paracoccidioidomycosis and esophageal squamous cell carcinoma. Concomitance of these conditions may be a casual event, but a not fully understood causal relationship can be involved.