Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Increased pulmonary vascular congestion persists . There is more focal parenchymal disease in the right base which has not changed . Whether this represents pneumonia or focal pulmonary edema is difficult to determine . Likely there is small bilateral effusions . The heart remains enlarged . There is aortic arch calcification . Scoliosis of the spine again is noted .
    OUTPUT:
    
No significant interval change . Low lung volumes , pulmonary vascular congestion and focal density in the right base . Cardiomegaly .