Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Study is slightly limited due to patient rotation . Tracheostomy tube tip is in standard position terminating approximately 7 .6 cm from the carina . Evaluation of the cardiac silhouette size is limited due to rotation . The aorta may be slightly tortuous . There is minimal streaky opacity in the left lung base , likely reflective of atelectasis . No focal consolidation , large pleural effusion , or pneumothorax is visualized . Degenerative changes within both glenohumeral and acromioclavicular joints appear mild . There is no pulmonary vascular congestion .
    OUTPUT:
    
Limited exam . Probable left basilar atelectasis .