Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest radiograph ___ at 15 :35 is submitted .
    OUTPUT:
    
Endotracheal tube , right subclavian PICC line , and nasogastric tube are unchanged in position . Overall cardiac and mediastinal contours are stable . No pulmonary edema . Right lung is grossly clear . Retrocardiac consolidation persists with adjacent layering left effusion . Findings would be consistent with partial lower lobe compressive atelectasis , although superimposed pneumonia can not be excluded . No pneumothorax , although the sensitivity to detect pneumothorax is diminished given semi erect technique .