Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a dobhoff tube coursing below the diaphragm , however the tip is not visualized on this image . There is a new left lower lobe retrocardiac opacity that is silhouetting the left hemidiaphragm . Minimal vascular congestion . Heart size is stable . The mediastinal and hilar contours are stable . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Appropriate positioning of dobhoff tube . 2 . New left lower lobe retrocardiac opacity , concerning for pneumonia . 3 . Minimal vascular congestion .