Figure 1033

(see Color Plate)

Endoscopic view of severe esophagitis.

FIGURE 10-34 (see Color Plate)

Displayed are Aspergillus as fungus balls, which are proliferating masses of fungal hyphae. The hyphae are septute, 5 to 10 pm thick, and branch at acute 40° angles. Aspergillus frequently invades blood vessels, causing hemorrhage and necrotizing inflammation with downstream infarction. This image shows three fungus balls in the lung (Gomori-Ammon stain for fungi).

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