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Case 31

Author: Dr. Manon Auger, Dept of Pathology, McGill University, Montreal, Canada

Reviewer: Ritu Nayar, MD., Northwestern University,Feinberg School of Medicine, Chicago, IL, USA

Case history: A 47 year old man presented with an interstitial lung infiltrate; no other past significant history. 

What is the most likely diagnosis of this case?

http://image.upmc.edu:8080/IAC-Virtual-Slide-Cases/IAC-Lung/IAC-BWCase5R.svs/view.apml?