Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable with minimal atherosclerotic calcifications noted in the aortic knob . Patchy opacities are seen within the left upper and lower lung fields which are nonspecific but may reflect areas of infection in the correct clinical setting . No pleural effusion or pneumothorax is present . Cervical spinal fusion hardware is incompletely imaged .
    OUTPUT:
    
Patchy opacities in the left upper and lower lung fields are nonspecific , but may reflect infection in the correct clinical setting . Repeat PA and lateral views of the chest with improved inspiratory effort may provide further clarification .