Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . A right - sided Port - A - Cath and a left - sided dialysis catheter are noted to be in adequate positions . There are slightly decreased lung volumes with mild associated vascular crowding . Atelectasis is seen in the lung bases , unchanged from prior exam . The lungs are otherwise clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .