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Pneumocystis jirovecii

Pneumocystis jirovecii
#00066771
Author: Najmaldin Saki, PhD; Mahdis Kakoli, M.Sc
Category: Infectious Disease > Fungi > Pneumocystis
Published Date: 11/10/2026

Ziehl-Neelsen staining for suspected mycobacterial infection incidentally revealed false-positive acid-fast Pneumocystis jirovecii cysts (an opportunistic fungus). This highlights how P. jirovecii can mimic acid-fast bacilli (AFB) and confound microscopic diagnosis.

 
     
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