More data on "Abnormal CxR"

This is the 64-year-old man with progressive, worsening dyspnea described below.
Initial blood cultures and sputum culture were non-revealing. His ESR was 75 with a positive ANA screen but essentially negative titers (<1:40); U/A was unimpressive, renal function was normal, initial CBC had mild anemia (Hgb 12.6) but normal WBC (7.6 with 90% PMNs) and normal platelets.
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