<unk>  is an infection of the lungs by fungi. It can be caused by either endemic or opportunistic fungi or a combination of both.<unk>  is uncommon, but it may occur in individuals with  immune system problems due to AIDS, immunosuppresive drugs, or other medical problems. The pathophysiology of pneumonia caused by fungi is similar to that of bacterial pneumonia.<unk>  is most often caused by Histoplasma capsulatum, Cryptococcus neoformans, Pneumocystis jiroveci, and Coccidioides immitis. Histoplasmosis is most common in the Mississippi River basin, and coccidioidomycosis in the southwestern United States.
Fungal pneumonia
Viral pneumonia
Atypical pneumonia
Bacterial pneumonia
Community acquired pneumonia
Community-acquired pneumonia
CMV pneumonitis
Cavitary pneumonia