Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left PICC terminates in the low SVC . There is blunting of the right posterior sulcus on the lateral view suggesting a small right pleural effusion . The inspiratory lung volumes are appropriate . There is residual mild pulmonary vascular congestion and interstitial edema , improved from ___ . There is no focal consolidation or pneumothorax . The cardiomediastinal and hilar contours are within normal limits . No acute osseous abnormality is detected .
    OUTPUT:
    
Residual mild pulmonary vascular congestion / interstitial edema , improved from ___ . Trace right pleural effusion .