Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal AP and lateral views of the chest were obtained . Low lung volumes result in bronchovascular crowding . There is mild bibasilar atelectasis . No focal consolidation , pleural effusion or pneumothorax . Increased interstitial markings particularly at the bases may be due to chronic lung disease . Cardiomegaly is unchanged . Mediastinal silhouettes and hilar contours are stable allowing for low lung volumes . Degenerative change is seen in the left shoulder girdle . There is no free air under the diaphragm . No displaced rib fracture is seen .
    OUTPUT:
    
No acute intrathoracic process .