Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is chronic elevation of left hemidiaphragm with chronic atelectasis in the left lower lobe . There is slight rightward patient rotation with shift of the cardiomediastinal silhouette slightly to the right . The right lung appears essentially clear . No large effusion or pneumothorax is seen . The mediastinal contour appears grossly stable . No acute bony abnormalities .
    OUTPUT:
    
No acute intrathoracic process . Please refer to subsequent CT chest for further details appear