Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the recent portable examination , opacification in the lung bases persists on the frontal projection . Additionally , there is increased density in the retrocardiac space on the lateral projection which is new compared to the prior lateral radiograph from ___ . Findings are concerning for a lower lobe pneumonia . No large pleural effusion is evident . There is no vascular congestion or overt edema . No pneumothorax is identified . Mediastinal and hilar contours are within normal limits . The heart size is at the upper limits of normal , though unchanged from prior .
    OUTPUT:
    
Basilar consolidation concerning for lower lobe pneumonia .