RID13213 organ zone
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RID31453 constriction zone of esophagus
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RID31454 proximal esophageal constriction
RID31455 esophageal constriction by arch of aorta
RID31456 esophageal constriction by left principal bronchus
RID31457 distal esophageal constriction
RID31458 pharyngo-oesophageal constriction
RID31459 broncho-aortic constriction of esophagus
RID31460 thoracic constriction of esophagus
RID31461 diaphragmatic constriction of esophagus