Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and CABG . Mild cardiomegaly is re - demonstrated . Aortic knob calcifications are present . The mediastinal and hilar contours are unremarkable . There is mild pulmonary vascular congestion without frank pulmonary edema . Blunting of the left posterior costophrenic angle is chronic , likely due to pleural thickening . No pleural effusion or pneumothorax is seen . Streaky atelectasis is noted in the left lung base without focal consolidation . Moderate multilevel degenerative changes are demonstrated in the thoracic spine .
    OUTPUT:
    
Unchanged mild cardiomegaly with mild pulmonary vascular congestion . Minimal left basilar atelectasis without focal consolidation .