Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate improved bilateral lung aeration . There is a density in the left lower lobe which should be followed closely . The right lung is grossly clear . There are bilateral small pleural effusions . There is suspicion of small left apical pneumothorax without tension . There has been interval removal of left - sided central line . Patient is status post left upper lobectomy with residual volume loss . Again identified left 5th rib fracture .
    OUTPUT:
    
Improved bilateral lung aeration with density within the lower left lobe which should be followed closely . Suspicion of small left apical pneumothorax without tension . These findings were communicated to the surgical house staff officer caring for this patient at the time findings were discovered at 15 :35 on ___ via telephone by Dr . ___ .