Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy , CABG , and TAVR . Mild enlargement of the cardiac silhouette with a left ventricular predominance is re - demonstrated . The mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Patchy opacities in the lung bases likely reflect areas of atelectasis . No large pleural effusion or pneumothorax is detected however the lung apices are obscured by the patient 's chin and neck projecting over these regions . Moderate multilevel degenerative changes are noted in the thoracic spine . Multiple clips project over the region of the gastroesophageal junction .
    OUTPUT:
    
Patchy opacities within the lung bases , likely atelectasis . Infection , however , is not excluded in the correct clinical setting .