Unusual Radiographic Presentation of Pneumocystis Pneumonia in a Patient with AIDS

Figure 4

Transbronchial biopsy pathologic results. Pathologic evidence for PCP infection from the patient’s transbronchial biopsy specimen. (a) Hematoxylin and eosin- (H&E-) stained section demonstrates classic intra-alveolar eosinophilic foamy exudates. (b) Gomori methenamine silver (GMS) special stain demonstrates nonbudding cysts with thin walls and intracystic capsular dots, consistent with Pneumocystis jirovecii-type fungal organisms.

(a)

(b)