Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates persistent but decreased right pleural effusion . This appears to be a lenticular opacity laterally at the right base on frontal views raises possibility of a loculated pleural component . The lungs are otherwise clear with no focal opacity convincing for pneumonia . Cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax . No acute osseous abnormalities detected .
    OUTPUT:
    
Persistent right pleural effusion , much decreased since prior examination . Lenticular shape on the frontal view may raises the possibility of loculation .