Figure 1. Photomicrograph of the lung. A – lung parenchyma with alveolar spaces filled by pink acellular proteinaceous fluid. Also, a large vessel containing mixed inflammatory cell infiltrate and areas of necrosis (H&E, 100X); B – numerous polymorphonuclear leucocytes, nuclear debris, red blood cells, and fungal hyphae with septations (arrows)(H&E 400X); C and D – Grocott-Gomori's Methenamine Silver (GMS) stain special stain demonstrating thick and thin-walled blood vessels with lumen filled with many fungal hyphae and disruption of the vessels wall (200X).
