Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top - normal . Mediastinal contour for is unremarkable . Lung volumes are low with more focal increased opacity at the right lung base . There is background of mild vascular congestion . There is no pneumothorax or large pleural effusion .
    OUTPUT:
    
Focal right basilar opacity obscuring the medial hemidiaphragm , concerning for pneumonia in the correct clinical setting .