Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is improved from ___ study . Pulmonary vascular congestion is stable without pulmonary edema . New mild left lower lobe atelectasis is seen . Biapical scarring is seen and unchanged . A tiny left pneumothorax is seen and in retrospect is unchanged in size when compared ___ study . Left rib fractures are again seen and better evaluated on CT chest / abd / pelv of ___ .
    OUTPUT:
    
1 . Stable tiny left apical pneumothorax . 2 . Persistent mild pulmonary vascular congestion . 3 . Focal left lower lobe atelectasis .