曲霉菌：肺脓肿（大体） 跨肺叶感染（大体） 真菌球（低倍） 菌丝（高倍放大） 分枝状菌丝
This is a fungal abscess of the lung. Note the yellow tan material in the abscess. It is very firm material, because it is composed of fungal hyphae. This one is due to Aspergillus. Aspergillus has a habit of colonizing previously formed cavities, such as those with tuberculosis.