Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post left upper lobectomy . As on recent chest CT , there has been improvement in the consolidative process in the left lower lobe . Persistent spiculated nodular opacity seen in the left upper and mid lung , better characterized on CT . The right lung is clear . Cardiomediastinal silhouette is difficult to assess . Old posterior right rib fractures again noted .
    OUTPUT:
    
No significant interval change since recent CT . Improvement of the appearance of the left lung compared to exam from ___ with residual spiculated nodular opacities better characterized by recent CT scan .