Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right subclavian PICC line tip overlies proximal SVC , unchanged . Again seen are low inspiratory volumes . As before , there is moderately severe cardiomegaly prominence of both hila upper zone two - view shin and diffuse vascular blurring , consistent with CHF and interstitial edema . Increased retrocardiac density is similar to the previous film . Opacity in the right infrahilar region is also overall similar . The right hemidiaphragm may be slightly better defined . Though there is likely some degree of pleural fluid , no gross effusion is seen on either side .
    OUTPUT:
    
Continued cardiomegaly . Continued CHF with interstitial edema . Retrocardiac density and confluent opacity in the right infrahilar region are overall similar to the prior film . The differential diagnosis includes opacity due to alveolar edema , but underlying pneumonic infiltrates can not be entirely excluded .