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According to a Mayo clinic study, sinusitis caused by growth of fungus fibers or balls of fungus fibers in the sinus cavities is not unusual. This is typically caused by common Aspergillus, Fusarium, and Curvularia species. Aspergillosis caused by the growth of aspergillus species in the lungs most commonly A.fumigatus, A. flavus, A. Niger and A. territus species typically occurs in persons with compromised immune systems or a history of lung disease that resulted in past lung damage.
Nearly any fungi can cause infections in persons with severely compromised immune systems.
A fungus ball in the lungs may cause no symptoms and may be discovered only with a chest x-ray. Or it may cause repeated coughing up of blood and—rarely—severe, even fatal, bleeding. A rapidly invasive Aspergillus infection in the lungs often causes cough, fever, chest pain, and difficulty breathing.