Aspergillosis Fungus Ball
This was a mass of fungi from a cavity within the lung. There is no normal lung tissue here. The patient had mild diabetes, and this set him at risk.
The spores were inhaled, germinated, invaded a blood vessel, and infarcted a portion of lung.
Each individual fungal hypha is about 8 mm across. They branch at 45 degree angles and have septa.
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