Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 12 :41 is submitted .
    OUTPUT:
    
Patchy retrocardiac opacity with suggestion of air bronchograms favors aspiration or pneumonia rather than atelectasis . Clinical correlation is recommended . Right medial basilar patchy opacity more consistent with atelectasis in the setting of an elevated right hemidiaphragm and decreased lung volume . Right internal jugular large bore catheter unchanged in position with its tip terminating in the right atrium . Left subclavian PICC line has its tip in the distal subclavian vein prior to the confluence with the SVC . No pulmonary edema . No pneumothorax . Overall cardiac and mediastinal contours are stable given differences in patient rotation .