Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest show a small right pleural effusion . Heart size is mildly enlarged . Hilar and mediastinal contours are normal . The lungs are clear and there are no increased interstitial markings or bronchovascular crowding . Noted is unfolding of the aorta and a calcified aortic knob . No evidence of pneumothorax .
    OUTPUT:
    
Small right pleural effusion with mild cardiomegaly .