Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low with resultant vascular crowding limiting the evaluation . There is moderate bibasilar atelectasis . There is no definite focal airspace opacity on this single projection to suggest pneumonia . There is unchanged eventration of the right hemidiaphragm . Moderate cardiomegaly is unchanged . Dilation of the pulmonary artery is re - demonstrated . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Low lung volumes and bibasilar atelectasis . 2 . No convincing evidence of pneumonia on this single projection . 3 . Stable moderate cardiomegaly and pulmonary artery dilation .