Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal supine view of the chest was obtained portably . Low lung volumes result in bronchovascular crowding . Right basilar linear opacity may represent atelectasis or pneumonia . The remainder of the lungs is clear . No pneumothorax or pleural effusion . Heart size is normal allowing for patient position and technique . Mediastinal silhouette and hilar contours are within normal limits .
    OUTPUT:
    
Right basilar atelectasis or pneumonia . If further evaluation is needed , consider conventional PA and lateral radiographs in radiology . No effusion .