Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP semi-upright chest radiograph demonstrates slight interval improvement in interstitial prominence consistent with slightly improved pulmonary edema , now mild . A small right pleural effusion remains . There is no focal consolidation to suggest pneumonia . A focus of linear atelectasis in the retrocardiac region is noted . The heart size is normal , accentuated by portable technique , the mediastinal contours are unremarkable .
    OUTPUT:
    
Mild pulmonary edema , improved compared with 18 :42 hours on ___ . A small right pleural effusion remains , there is no focal consolidation to suggest pneumonia . This could be confirmed if indicated with oblique views . Findings were discussed with Dr . ___ ___ the ___ at 4 :30 a .m .