Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal hilar contours are unremarkable . Diffuse ill - defined airspace opacities are noted in both lungs , more pronounced in the left lung compared to the right . There is no pulmonary vascular congestion , pleural effusion or pneumothorax . No acute osseous abnormality is seen .
    OUTPUT:
    
Diffuse ill - defined opacities in both lungs , more pronounced on the left . Findings are concerning for either multifocal pneumonia or PCP , although the latter would be somewhat atypical given the somewhat asymmetric distribution of the airspace opacities .