Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity within the lingula and left lower lobe obscures the left heart border . The right lung is clear without focal opacity . There is no pleural effusion or pneumothorax . Evaluation of the cardiac contours is limited due to the overlying opacity . The mediastinal contours are normal . There is no free air beneath the hemidiaphragms .
    OUTPUT:
    
Opacity within the lingula and left lower lobe is concerning for pneumonia . Consider dedicated PA and lateral views for improved assessment .