Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are accentuated by low lung volumes . Bilateral low lung volumes are noted with crowding of bronchovascular markings with no focal consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
Bilateral low lung volumes with crowding of bronchovascular markings , but no acute cardiopulmonary process .