Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is a right - sided central venous catheter terminating in the region of the distal SVC / cavoatrial junction . Bibasilar opacities have improved in the interval with the right lung base clear and possible minimal residual remaining at the left lung base . No pleural effusion or pneumothorax . Mild loss of height of a mid lower thoracic vertebral body is stable since CT of ___ . Posterior spinal hardware is partially imaged .
    OUTPUT:
    
Interval improvement in bibasilar opacities with the right lung base clear and the left lung base with minimal residua remaining , which could be atelectasis versus aspiration / mild infection .