seventy-six ( 45 % ) answered a questionnaire concerning the surgical management of esophageal tumors , the reasons for non operability and non resectability , the place of radiotherapy , the validity of palliative procedures , the exposure and type of resection for tumors at various levels in the esophagus , the technical details of the operations , the resectability and mortality rate , the anastomotic leak rate and its treatment , and the five-year survival rate after operation .
C0014859
esophageal tumors
C0014876
esophagus