Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly has been stable compared to exams dated back to ___ . Small left pleural effusion appears new compared to the prior exam from ___ . There is a subtle increase in opacity along the lateral right lung base . There is no pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . Subtle increase in opacity along the lateral right lung base , could be secondary to pneumonia . Oblique radiographs may be helpful to confirm . 2 . New small left pleural effusion .