Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . Bibasilar linear opacities likely represent atelectasis or scarring . There is no effusion or pneumothorax . Unfolded aorta is similar to prior . Cardiomediastinal silhouette is stable . Ossific densities inferior to the humeral heads bilaterally may represent intraarticular bodies . Incidentally noted is colonic interposition between the right hemidiaphragm and the liver .
    OUTPUT:
    
No acute intrathoracic process .