
a full workup was done to look for infectious source.
sputums: AFB negative x 3, fungal negative. PCP negative (no PCR, no bacteria
CSF - negative for infection.
What kinds of things could be causing these findings and what would you do?
Discussion of interesting or befuddling cases related to pulmonary and critical care medicine.












What are your thoughts as to the cause of his new dyspnea? What else would you do?
I just saw him today so there is no "magic" answer that I am witholding; just looking for other opinions (you know, like a roundtable discussion).

showed chronic and granulomatous inflammation, with focal active lung injury.
The BAL was negative for mycobacteria (specifically mycobacterium avium complex (MAC)). He was started on prednisone 60 mg and his symptoms are essentially resolved after 1 month of therapy. His followup CXR showed clearing of much of the prior acute interstitial infiltrates:
Final Diagnosis: Hypersensitivity pneumonitis ("Hot tub lung")
During increased dyspnea:
CT around same time shows changes:
What would you do next, or what thoughts do you have regarding the DDx?



.






