Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs were provided . A left chest wall pacemaker is present with leads in the right atrium and right ventricle . Compared to the prior study , there has been improvement in pulmonary vascular congestion and aeration at the left base . Lung volumes remain low . Small bilateral pleural effusions are present , left greater than right . There is no focal consolidation or pneumothorax . Right hilar opacity is stable and consistent with an enlarged pulmonary artery as seen on CT . Multiple pulmonary nodules identified on the recent CTA chest are not definitively identified . There are degenerative changes of the thoracic spine . The imaged upper abdomen is unremarkable .
    OUTPUT:
    
1 . Improvement of pulmonary vascular congestion and improved aeration at the left base . 2 . Small bilateral pleural effusions , left greater than right .