Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . There are ill - defined heterogeneous opacities in the right lung base and right mid to upper lung zone . Similar opacities are present in the left lung base . There is a small - to - moderate right pleural effusion . No left pleural effusion is seen . Hilar and mediastinal silhouettes are prominent . Heart size is normal . There is no pulmonary edema .
    OUTPUT:
    
1 . Bilateral ill - defined opacities , most likely multifocal pneumonia in the appropriate clinical setting . 2 . Small - to - moderate right pleural effusion .