Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided pneumothorax is decreased in size . A left - sided pigtail catheter terminates at the left lung base , unchanged . There is a tiny left sided pleural effusion . Left parenchymal opacities are improving however a left apical opacity remains unchanged . Additionally , there is increased pulmonary vascular congestion within the right lung .
    OUTPUT:
    
1 . Small left - sided pneumothorax , decreased in size . 2 . Improved left lung parenchymal opacities but stable left apical opacity . 3 . Increased pulmonary vascular congestion in the right lung .