Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . There is no focal consolidation , pleural effusion or pneumothorax . Minimal left lung base opacity only seen on the frontal view likely represents atelectasis . Hilar and mediastinal silhouettes are unchanged . The intrathoracic aorta appears tortuous . Heart size is top normal . Partially imaged upper abdomen is unremarkable . Compression deformity of L1 vertebral body is unchanged since ___ CT exam .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .