Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse ill - defined airspace opacities are present bilaterally . Low lung volumes cause bronchovascular crowding . A more mass - like opacity in the right upper lung measures up to 2 .6 x 1 .9 cm . There is a small to moderate left pleural effusion . The cardiomediastinal silhouette is within normal limits . There is no pneumothorax or pulmonary edema .
    OUTPUT:
    
Multifocal airspace opacities may represent multifocal peribronchial pneumonia or multiple pulmonary masses . Chest CT is recommended for further evaluation .