Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable semi-erect chest radiograph was obtained . A retrocardiac opacity continues to progress since ___ . Additional pulmonary opacity in the left lower lobe is now more apparent . No new effusion or pneumothorax is present . The cardiac contours are unchanged . An enteric catheter side hole is seen projecting over the stomach .
    OUTPUT:
    
Increasing opacity at the left base silhouettes the left hemidiaphragm and may represent lower lobe atelectasis and / or pneumonia . Increasing pulmonary opacities at the left base and the right base could represent developing consolidation .