Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new moderate to large right pleural effusion is demonstrated with associated right basilar opacification . Patchy left basilar opacity is also demonstrated . Peripheral increased interstitial markings likely reflect underlying chronic interstitial lung disease , as assessed on the previous CT . There is no pneumothorax or pulmonary vascular congestion . Heart size is difficult to determine given the presence of the left pleural effusion . Mediastinal contours are unremarkable with calcification of the aortic knob . Right hilar enlargement is suggestive of underlying lymphadenopathy . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
1 . New moderate to large right pleural effusion . 2 . Right basilar opacification could reflect pneumonia , atelectasis , or aspiration . Followup imaging after treatment are recommended to ensure resolution and exclude underlying malignancy . Milder opacification within the left lung base may reflect atelectasis or chronic interstitial abnormality . 3 . Chronic interstitial lung disease , better assessed on previous CT .