Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , limiting evaluation of the lung bases , with perihilar atelectasis . Within this limitation , no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . The aorta is tortuous . Heart size is difficult to evaluate in the setting of markedly low lung volumes . A right - sided Port - A - Cath tip projects at the level of the cavoatrial junction , as seen previously . Density in the aortopulmonary window appears similar compared to prior and likely corresponds to calcified nodes , as seen on prior CT . Sternal wires appear intact .
    OUTPUT:
    
Low lung volumes , limiting evaluation of the lung bases and heart size , without radiographic evidence for acute cardiopulmonary process on this single frontal view .