Increased Neutrophils → think Idiopathic Pulmonary Fibrosis
Increased CD8>CD4 → think Hypersensitivity Pneumonitis
Increased CD4>CD8 → think Sarcoidosis
Increased Eosinophils → think Eosinophilic pneumonia
Positive Silver Methanamine Stain → think Pneumocystis Jiroveci in patients with HIV
Inclusion bodies → think CMV pneumonia
Once again, the folks who write the Internal Medicine licensing exams don’t expect you to have
the depth of knowledge regarding lung conditions that a pulmonologist possesses. However, topics
such as the ones mentioned in the slides and pearls above should assist you with the pulmonary
section of the med school clerkship shelf and ABIM board exams.
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