I have a radiographically slow resolving pneumonia. Clinically improved on week #4. PCP did CXR did not pick it up. Given Prednisone, Dulera, and Levaquin. CTC in ER next day showed RLL ( at very base) T of 102, dehydration, and severe HA forehead and behind eyes, O2 sat 96. Prosit added, appropriate abc tx per EC MD. CBC & CMP normal except for ALT, probably due to RLL inflammation.Fever ( 101 X 6 days). PCP added Doxy. Fever resolved. No cough, it developed on day 2 of Doxy. Thick viscous sticky like glue white to yellow sputum, crackles and wheezing auscultated but never an elevated WBC count. Mucinex DM ER q 12 added. Repeat CXR 10 days later = RLL and left mid infiltrates. Yesterday CXR slow resolving still apparent in same areas. Crackes LML heared, O2 sat stills at 96. First AM Sputum culture today.Feel ~ 85% better, but perplexed. May need Pulm referral. Nonsmoking, non drinking, 54 y/o F. RN in Onc Uro OP clinic. Your thoughts? Appreciate it.