Fig. 4

a: Puncture biopsy of nodules in the dorsal segment of the right lower lobe in prone position. b: Puncture tissue, microscopic alveolar cavity and alveolar septum see multiple nuclear giant cells and epithelioid cells vacuoles or small round body. c: PAS (+) The red arrows indicate some of the round bodies of cryptococcus after PAS staining; d: PASM (+)