Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Post CABG . Small posterior left - sided pleural effusion is demonstrated , similar in size to prior . Hazy opacity of the lingular region is again noted bordering the major fissure on lateral view . No significant right pleural effusion . Cardiomegaly . Mild tortuosity of thoracic aorta . No focal consolidation or pneumothorax . Degenerative changes of the spine .
    OUTPUT:
    
Small posterior left - sided pleural effusion , similar in size to prior . Hazy opacity of the lingular region is again noted bordering the major fissure on lateral view , possibly representing loculated pleural fluid . Chest CT is recommended for further evaluation . Cardiomegaly . Post CABG .