Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the right - sided Port -A - Cath is ill - defined but likely ends in the distal SVC , unchanged . Interval decreased aeration of the lungs with persistent low lung volumes . Post left upper lobectomy changes in the left upper hemithorax are expected and unchanged . Aeration of the remaining left lung is reduced . Asymmetric opacification of the lower lung may reflect a combination of atelectasis or small left pleural effusion , or may be projectional . Heart size can not be adequately assessed as the borders are not well - defined on the left , although is probably a normal , similar to the prior exam . No overt pulmonary edema or pneumothorax .
    OUTPUT:
    
Blunting of left costophrenic sulcus could be projectional or may reflect a small pleural effusion . Repeat standard PA chest radiograph is recommended for initial further evaluation , particularly as there was no evidence of pleural effusion on recent CT torso 5 days earlier .