Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph was provided . Previously noted PICC line has been removed . The heart remains moderately enlarged . Lung volumes are low without convincing evidence of pneumonia or overt CHF . No large effusion or pneumothorax is seen . Mediastinal contour is stable . Bony structures are intact . No free air is seen below the right hemidiaphragm .
    OUTPUT:
    
Stable cardiomegaly , no evidence of pneumonia or CHF .