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Pathology Education Instructional Resource β

Cytologically Yours: Unknowns: 201310: Case 5


Clinical History

46 yo male with a new left upper lobe nodule. He has a history of rheumatoid arthritis and welding. This is a FNA of the nodule.


Resident Question

Additional Teaching Points


  • Pneumocystis
    • Smaller
    • Tight casts
  • Candida
    • Equal sized yeast
    • No capsule
    • Pseudohyphal structures