Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were performed . Again , there is a large consolidative mass seen at the left lung base , which appears slightly decreased in size from prior . A right lower lobe nodule appears unchanged , while the remaining known lung nodules are not appreciated . There is no pleural effusion or pneumothorax . Cardiac and mediastinal contours are unremarkable . The patient is status post a right upper lobectomy .
    OUTPUT:
    
Slight decrease in size of a large left lower lobe consolidative mass , otherwise , no change from prior .