Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated is a right - sided subclavian central venous catheter with the tip terminating in the cavoatrial junction / proximal right atrium . Lung volumes remain low . Redemonstrated is a large loculated pleural effusion noted within the right major fissure . Streaky left retrocardiac opacities likely represent atelectasis , although infection is difficult to exclude . There is no appreciable pneumothorax identified . The right hemidiaphragm is mildly elevated relative to the left . The cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
1 . Low lung volumes an increase left lower lobe retrocardiac streaky airspace opacities . Findings likely represent atelectasis , although underlying infection is difficult to exclude completely . 2 . Stable appearance of a loculated right pleural effusion within the major fissure .