Image 15: This young man presented with a two month history of intermittent low grade fever, dry cough, fatigue, eosinophilia (5000/碌l) and splenomegaly (16 cm), beginning several weeks after returning from a 2 month long construction project in the Dogon region of Mali. His high resolution CT scan revealed a diffuse fine reticular pattern and variably sized (few mm-1 cm) ill-defined nodules. (click on image for larger version) The diagnosis is
