Histopathology of<unk> , H&E staining The most common organ affected by<unk>  is the lung.<unk>  mainly affects people with underlying cavitary lung disease such as tuberculosis, sarcoidosis, bronchiectasis, cystic fibrosis and systemic immunodeficiency. Aspergillus fumigatus, the most common causative species, is typically inhaled as small (2 to 3 micron) spores. The fungus settles in a cavity and is able to grow free from interference because critical elements of the immune system are unable to penetrate into the cavity. As the fungus multiplies, it forms a ball, which incorporates dead tissue from the surrounding lung, mucus, and other debris.
Aspergilloma
Aspergillosis
Histoplasmosis
Lobomycosis
Tuberculosis
Talaromycosis
Sycosis
Primary pulmonary coccidioidomycosis