Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding similar study of ___ . Heart size is unchanged . Moderate widening and elongation of the thoracic aorta as before . No local contour abnormalities . The pulmonary vasculature is not congested . The previously identified post-interventional parenchymal density in the left lower lobe posterior area has now regressed and the density assumed the size of the previously identified suspicious lesion . No remaining pneumothorax or new pleural effusion is identified .
    OUTPUT:
    
Normalization of post-interventional infiltrate with residual density identical preoperative local rounded lesion in left lower lobe posterior segment . No new pulmonary abnormalities are present , no pleural effusion and no pneumothorax .