Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient motion obscures fine detail . Lung volumes remain low , with crowding of bronchovascular markings . There is increased retrocardiac opacification , with partial silhouetting of the left hemidiaphragm . Moderate cardiomegaly and venous congestion persist . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
1 . Possible left lower lobe pneumonia . 2 . Moderate cardiomegaly and venous congestion .