Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Widespread ground glass opacities have improved compared to previous chest radiographs but there are diffuse reticular and subtle nodular opacities present bilaterally . No pneumothorax , pulmonary edema or pleural effusion noted . Heart and mediastinal contours are normal . No bony abnormalities noted .
    OUTPUT:
    
Improved ground glass opacities with residual diffuse reticular and fine nodular pattern . Diagnostic considerations include slowly resolving / chronic Pneumocystis infection versus a secondary infection by bacterial , viral , fungal or mycobacterial organisms . Considering recurrent symptoms , suggest Chest CT for further characterization . Findings were conveyed via telephone to Dr . ___ on ___ at 4 PM .