Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires , tripolar AICD and LVAD device unchanged . An area of pleural parenchymal scarring accounts for blunted appearance of the right CP angle on the frontal radiograph . There is no convincing evidence for pneumonia or edema . There is a small left pleural effusion . No pneumothorax . Cardiomegaly again noted . Mediastinal contour is normal . Bony structures appear intact .
    OUTPUT:
    
Small left pleural effusion . Cardiomegaly .