Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are slightly low . There is no focal airspace opacity on this single projection to suggest pneumonia . Mild cardiomegaly is unchanged . The mediastinal and hilar contours are unchanged . Previous pattern of mild pulmonary vascular congestion appears slightly improved . Multiple surgical clips project over the mediastinum . Multiple median sternotomy wires are in place . Left PICC terminates in the mid SVC .
    OUTPUT:
    
Mild cardiomegaly with mild pulmonary vascular congestion , slightly improved . No evidence of pneumonia .