Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were obtained . Midline sternotomy wires and prosthetic cardiac valve are redemonstrated . The PICC line is again noted with its tip likely extending into the superior vena cava . There is no definite sign of pneumonia or overt CHF . The heart size is moderately enlarged though this is unchanged with an LV configuration . The mediastinal contour is normal . There is no pneumothorax . No large pleural effusion is seen . DISH - related changes of the T - spine noted .
    OUTPUT:
    
Cardiomegaly , unchanged . PICC line in adequate position . No definite signs of pneumonia .