Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well expanded . An eventration of the right hemidiaphragm is better seen in the lateral view . Also in the lateral view , there is a triangular opacity obscuring the posterior right costophrenic sulcus and silhouetting out the posterior margin of the right hemidiaphragm which corresponds to a fat containing Bochdalek hernia better characterized in prior chest CT . Linear opacities along the left lung base are compatible with subsegmental atelectasis . Otherwise , no other focal parenchymal opacities are identified . There is no pleural effusion or pneumothorax . Degenerative changes of the thoracic spine with calcification of the anterior longitudinal ligament are present . Cardiac size is normal . The cardiomediastinal and hilar contours are unremarkable .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Eventration of the right hemidiaphragm and posterior right - sided Bochdalek 's hernia are better characterized in prior chest CT . Left basilar atelectasis .