Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is enlarged , but likely exaggerated due to patient positioning and AP technique . The mediastinal and hilar contours are within normal limits . The right - sided PICC tip terminates at the cavoatrial junction , the lung volumes are low but clear of consolidation ; the previously described CHF looks markedly improved with minimal residua at the right base . There is no pleural effusion or pneumothorax . Supine positioning limits assessment for subdiaphragmatic free air .
    OUTPUT:
    
Cardiomegaly . No evidence of pneumonia .