Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes which results in bronchovascular crowding . Again seen are prominent interstitial markings and evidence of vascular engorgement , which have decreased slightly over the interval . There is a small left - sided pleural effusion with adjacent atelectasis . The left hemi-diaphragm is elevated . The cardiomediastinal contours are unchanged . There is no pneumothorax .
    OUTPUT:
    
Interval improvement in small left - sided pleural effusion with adjacent atelectasis and interstitial pulmonary edema .