Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes , which accentuate bronchovascular markings . There is no focal consolidation , pleural effusion or pneumothorax . Linear opacities at the left lung base likely represent plate - like atelectasis . There is no pulmonary edema . Hilar and mediastinal silhouettes are unchanged . The heart size is top normal . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .