Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Streaky lateral left base opacities may be due to atelectasis , although infectious process is not excluded in the appropriate clinical setting . The right lung is clear . There is no pleural effusion , or evidence of pneumothorax . The cardiac and mediastinal silhouettes are stable . Posterior cervicothoracic spinal fusion hardware and spacer grossly stable as compared to the prior study . Osseous changes are better assessed on the CT .
    OUTPUT:
    
Patchy lateral left basilar opacity could relate to atelectasis , but consolidation is not excluded in the appropriate clinical setting .