Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrates a normal sized heart . Hilar contours are within normal limits . A small to moderate right pleural effusion appears to have been present on prior examination , not significantly changed , with apparent loculation . No focal opacity convincing for pneumonia is present . There is no pneumothorax or evidence of pulmonary edema . Imaged osseous structures and upper abdomen demonstrate no acute abnormality .
    OUTPUT:
    
1 . Right pleural effusion present on prior examination and not significantly changed . Given apparent loculation , a CT may be performed to further assess if clinically indicated . 2 . No focal opacity convincing for pneumonia .