Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion or pneumothorax identified . Minimal atelectasis is noted at the left lung base . The size and appearance of the cardiomediastinal silhouette is unchanged including the a a retrocardiac density reflecting a large hiatal hernia . Degenerative changes of the left glenohumeral joint . Minimal osteoarthrosis of both acromioclavicular joints .
    OUTPUT:
    
Minimal left basilar atelectasis .