moreover , the demonstration of the air-filled proximal pouch and distal tracheoesophageal fistula along their whole lengths allowed exclusion of the possibility of a proximal pouch fistula and gave knowledge of the exact distance of the two segments of the esophagus needed to be bridged to allow anastomosis , thus providing additional valuable information for the surgeon preoperatively .
C0040588
tracheoesophageal fistula
C0016169
fistula