Analysis of 69 Cases of Adenocarcinoma of the Esophagogastric Junction (Siewert Type II/III): 10- Year Single Center Experience

Aim: In this study, we aimed to present our 10-year experience regarding clinicopathology characteristics and
overall survival of 69 patients with adenocarcinomas of esophag ogastric junction (AEJs).
Patients and Methods: A total of 69 consecutive patients diagnosed with AEJ and operated in our clinics
were included in the study. Patients’ demographic characteristics; laboratory parameters, surgical resection
approach; TNM stages; resection extent; total number of removed lymph nodes; tumor localization; presence
of lymphatic, vascular and perineural invasion and overall survival (OS) status were recorded. The patients
were divided into two groups as Siewert Type II and Siewert Type III.
Results: There was no statistically significant difference between the groups in terms of age (p=0.696)
and gender (p=0.140). Distribution of T stage was statistically significantly different between the groups
(p=0.026). OS was found to be significantly higher in patients at R0 level compared to those at R1 level. OS
was statistically significantly higher in patients without lymphatic, vascular and perineural invasion. 1-year OS
was determined as 83.50%, 3-year OS as 49.10% and 5-year OS as 43.60%. The risk of mortality increased
by 8.63 folds in the presence of perigastric fat infiltration, 12.60 folds in the case of vascular invasion and
13.45 folds in the case of perineural invasion. The survival rate was found as 51% and 41% in the Siewert
Type II and Type 3 patients at median 10-year follow-up.
Conclusion: This study had successfully evaluated the clinicopathological characteristics and overall
survival, and demonstrated that Siewert II tumors and Siewert III tumors had similar survival outcomes.
Further comprehensive multicenter studies with larger series and long-term studies are needed to provide
contribution to the existing evidence on outcomes of patients w ith AEJs.