Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Local lung volumes are noted , leading to crowding of the bronchovascular structures but there may be mild interstitial abnormality in the lung bases , including the mild edema . The right hemidiaphragm is elevated relative to the left . Unfortunately we have no prior chest radiographs so the chronicity is indeterminate . Streaky bibasilar atelectasis is more significant on the right . There is no evidence of lobar consolidation , pleural effusion , pneumothorax , or frank pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Mild interstitial abnormality , could be acute edema , alternatively interstitial pneumonia , or chronic lung disease .