Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Triple lead left - sided pacer device is stable in position . The cardiac silhouette is enlarged . Aorta is calcified and tortuous . There are relatively low lung volumes . No focal consolidation , large pleural effusion or evidence of pneumothorax is seen . There may be minimal pulmonary vascular congestion .
    OUTPUT:
    
Cardiomegaly , may be slightly increased although this may relate to lower lung volumes . Possible minimal vascular congestion .