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Numerous squamous epithelial cells
The specimen is mostly saliva. = Not sputum, reject and recollect specimen.
Numerous neutrophils (often with intracellular or extracellular organisms)
Often with intracellular or extracellular organisms.
= Bacterial or fungal pneumonia
Numerous eosinophils
Asthma or pulmonary hypersensitivity reaction.
Numerous neutrophils, abundant mucus, few or no organisms
= Chronic bronchitis or bronchiectasis
PAS-positive macrophages
= Alveolar proteinosis
PAS-positive rounded bodies that take silver stain
= Pneumocystis carinii (Pneumocystis jirovecii)
Lipid droplets in macrophages
= Lipoid or aspiration pneumonia
Curshmann’s spirals (coiled mucus filaments)
= Asthma: obstruction of small bronchi
Charcot-Leyden crystals
= Asthma
Dense, crystalline concretions
= Broncholithiasis