Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of chest . The lungs are well expanded and clear . There is no pleural effusion or pneumothorax . There is distension of the upper esophagus . Abnormal retrocardiac mediastianal tissue is noted .
    OUTPUT:
    
Distension of the upper esophagus and abnormal retrocardiac mediastianal tissue . If these findings correlate with patient symptoms and futher evaluation is clinically indicated , CT would allow for better characterization . Findings communicated to Dr . ___ at 7 : 48 a .m . on ___ by phone .