Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the most recent prior chest x-ray , no significant change is detected . Inspiratory volumes are slightly low . Again seen is increased retrocardiac density , with obscuration of the left hemidiaphragm . This area of retrocardiac opacity apparently includes the patient 's known necrotic lung mass , which was better depicted on the ___ CT scan . There is upper zone redistribution , without overt CHF . There is platelike atelectasis at the right lung base medially . Tubing seen overlying the left hemidiaphragm likely corresponds to the the patient 's pericardial drain .
    OUTPUT:
    
Doubt significant change compared with ___ at 19 :26 .