Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large right pleural effusion is demonstrated with right basilar opacity likely reflective of compressive atelectasis . Heart size is difficult to assess given the presence of the large right pleural effusion . The aorta appears tortuous . Left lung is clear . No pulmonary edema seen . No left - sided pleural effusion or pneumothorax is present . Cervical spinal fusion hardware is partially imaged as is a right shoulder arthroplasty . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Large right pleural effusion with right basilar atelectasis .