Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright view of the chest was reviewed and compared to the prior study . Bowel gas extends from the right abdomen through the mediastinum and into the thoracic inlet and represents a colonic conduit from prior esophagectomy . Extensive bilateral parenchymal opacities located predominantly in the right upper lung and lingula are relatively unchanged . There is no pulmonary edema , abscess , pleural effusion or pneumothorax . Right and left calcified pleural plaques located over the hemidiaphragms are from prior asbestos or talc pleuradesis . A left pectoral bi-electrode pacer 's leads end in the right atrium and right ventricular apex respectively .
    OUTPUT:
    
1 . Relatively unchanged extensive bilateral pneumonia . 2 . Colonic conduit from prior esophageal resection .