Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Extensive surgical fixation hardware at the right proximal humerus again noted . There is interval improvement in right basal effusion and atelectasis compared with prior exam . Cardiomediastinal silhouette appears normal aside from a slightly unfolded thoracic aorta . There is no convincing evidence for edema . Chronic left ribcage deformities are re- demonstrated . Vertebra plana defect in the mid thoracic spine again seen with acute kyphotic angulation centered at this level .
    OUTPUT:
    
Right basal opacity compatible with small residual right effusion and mild basal atelectasis improved from prior .