"Aspergilloma enters the lungs through the respiratory tract. It creates a cavity inside the lungs, and then a ball of fungus grows inside that space. The fungus typically infects people with suppressed immune systems or lung problems such as tuberculosis. If left untreated, aspergillomas can cause pneumonia and death.
Aspergilloma, a fungal infection that mainly infects the lungs, is relatively uncommon, and this particular clump of fungus was extremely large."