Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal size and cardiomediastinal contours are unremarkable . Lungs are well expanded . Chrnoic right - sided elevation of the diaphragm is consistent with a history of right lower lobectomy . Small - moderate right pleural effusion withthe minor fissure has decreased compared to the prior study . No pneumothorax .
    OUTPUT:
    
Small - moderate right pleural effusion , improved from prior , an overlying consolidation can not be excluded .