Neoadjuvant vs. adjuvant treatment of Siewert type II gastroesophageal junction cancer: an analysis of data from the surveillance, epidemiology, and end results (SEER) registry

Objective To analyze the effect of neoadjuvant radiotherapy (nRT) on prognosis in patients with locoregional Siewert type II gastroesophageal junction adenocarcinoma (GEA). Method All patients pathologically diagnosed as Siewert type II GEA between 2004 and 2015 were retrieved from the Surveillance, Epidemiology and Final Results (SEER) database. We analyzed the impact of different treatment regimens on the prognosis in each stage. Survival analysis was performed by Kaplan-Meier (K-M) method. Multivariate Cox model and propensity score matching was further used to verify the results. Results 4,160 patients were included in this study. The efficacy of nRT was superior to that of adjuvant radiotherapy (aRT) (p = 0.048), which was the same as that of surgery combined with chemotherapy (p = 0.836), but inferior to the overall survival (OS) of surgical treatment alone (p<0.001) in T1-2N0M0 patients. Patients receiving nRT had distinctly better survival than those receiving surgical treatment alone (p = 0.008), but had similar survival compared with patients treated with aRT (p = 0.989) or surgery combined with chemotherapy (p = 0.205) in the T3N0/T1-3N+M0 subgroup. The efficacy of nRT is clearly stronger than that of surgical therapy alone (p<0.001), surgery combined with chemotherapy (p<0.001), and aRT (p = 0.008) in patients with T4 stage. The survival analysis results were consistent before and after propensity score matching. Conclusion In these carefully selected patients, the present study made the following recommendations: nRT can improve the prognosis of patients with T3N0M0/T1-3N+M0 and T4 Siewert type II GEA, and it seems to be a better treatment for T4 patients. Surgery alone seems to be sufficient, and nRT is not conducive to prolonging the survival of Siewert II GEA patients with T1-2N0M0 stage. Of course, further prospective trials are needed to verify this conclusion.

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Defining the Lymphatic Target Volumes for Locally Advanced Siewert Type II and III Adenocarcinoma of Gastroesophageal Junction After Curative Resection: Vessel-Guided Delineation Based on 3-Dimensional Analysis of Nodal Recurrence

International Journal of Radiation Oncology*Biology*Physics ◽

10.1016/j.ijrobp.2016.06.1063 ◽

2016 ◽

Vol 96 (2) ◽

pp. E188

Author(s):

J. Zhang ◽

J. Jin ◽

Z. Liang ◽

X. Wang ◽

L. Jiang

Keyword(s):

Dimensional Analysis ◽

Curative Resection ◽

Gastroesophageal Junction ◽

Locally Advanced ◽

Type Ii ◽

Siewert Type ◽

Siewert Type Ii ◽

3 Dimensional ◽

Nodal Recurrence ◽

Target Volumes

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Neoadjuvant Versus Adjuvant Treatment of Gastroesophageal Junction Cancer: An Analysis of Data from the Surveillance, Epidemiology, and End Results (SEER) Registry

International Journal of Radiation Oncology*Biology*Physics ◽

10.1016/j.ijrobp.2015.07.852 ◽

2015 ◽

Vol 93 (3) ◽

pp. E120

Author(s):

J.A. Miccio ◽

O.T. Oladeru ◽

Y. Xue ◽

J. Yang ◽

H. Yoon ◽

...

Keyword(s):

Adjuvant Treatment ◽

Gastroesophageal Junction ◽

Gastroesophageal Junction Cancer ◽

End Results

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Total laparoscopic transabdominal-transdiaphragmatic approach for treating Siewert II tumors: a prospective analysis of a case series

World Journal of Surgical Oncology ◽

10.1186/s12957-021-02136-2 ◽

2021 ◽

Vol 19 (1) ◽

Author(s):

Wei Pang ◽

Gang Liu ◽

Yan Zhang ◽

Yun Huang ◽

Xinpu Yuan ◽

...

Keyword(s):

Surgical Approach ◽

Mediastinal Lymph Node ◽

Intraoperative Complications ◽

Case Series ◽

Type Ii ◽

Clinical Trial Registry ◽

Siewert Type ◽

Siewert Type Ii ◽

Estimated Blood Loss ◽

Gastrointestinal Reconstruction

Abstract Background Although the morbidity of gastric cancer has decreased, the incidence of adenocarcinoma of the esophagogastric junction (AEG) is increasing. Furthermore, no consensus exists on which surgical approach should be applied for Siewert type II AEG. The purpose of our study was to evaluate the technical safety and feasibility of a new surgical approach. Methods Sixty patients with Siewert type II AEG underwent laparoscopic total gastrectomy with the total laparoscopic transabdominal-transdiaphragmatic (TLTT) approach, which needs an incision in the diaphragm. Results The median operative time, reconstruction time, and estimated blood loss were 214.8 ± 41.6 min, 29.40 ± 7.1 min, and 209.0 ± 110.3 ml, respectively. All of the patients had negative surgical margins. Conclusion There were no intraoperative complications or conversions to open surgery. Our surgical procedure provides a unique option for the safe application of laparoscopic lower mediastinal lymph node dissection and gastrointestinal reconstruction. Trial registration Chinese Clinical Trial Registry, ChiCTR1800014336. Registered on 31 December 2017 - Prospectively registered, http://www.chictr.org.cn/edit.aspx?pid=23111&htm=4.

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Proximal Gastrectomy versus Total Gastrectomy for Siewert Type II Adenocarcinoma of the Esophagogastric Junction: A Comprehensive Analysis of Data from the SEER Registry

Disease Markers ◽

10.1155/2019/9637972 ◽

2019 ◽

Vol 2019 ◽

pp. 1-11 ◽

Cited By ~ 2

Author(s):

Kaixuan Zhu ◽

Yingying Xu ◽

Jiaxin Fu ◽

Farah Abdidahir Mohamud ◽

Zongkui Duan ◽

...

Keyword(s):

Total Gastrectomy ◽

Surgical Approach ◽

Esophagogastric Junction ◽

Proximal Gastrectomy ◽

Locally Advanced ◽

Cox Proportional Hazards Model ◽

Type Ii ◽

Siewert Type ◽

Siewert Type Ii ◽

Significant Difference

Background. To determine the ideal surgical approach (total gastrectomy (TG) vs. proximal gastrectomy (PG)) for Siewert type II adenocarcinoma of the esophagogastric junction (AEG), we searched and analyzed the Surveillance, Epidemiology, and End Results (SEER) data. Methods. Patients with Siewert type II AEG treated by TG or PG were identified from the 2004–2014 SEER dataset. We obtained the patients’ overall survival (OS) and cancer-specific survival (CSS) and stratified the patients by surgical approach. We performed a propensity score 1 : 1 matching (PSM) analysis and a univariate and multivariate Cox proportional hazards model. Results. A total of 2,217 patients with 6th AJCC stage IA–IIIB Siewert type II AEG was examined: 1,584 patients (71.4%) underwent PG, and 633 patients (28.6%) underwent TG. The follow-up time was 1–131 months. OS favored total gastrectomy before the PSM analysis (χ2=3.952, p=0.047), but after this analysis, there was no significant difference between TG and PG (χ2=2.227, p=0.136). The univariate and multivariate analyses identified age as an independent factor, and an X-tail analysis revealed 70 years as a cut-off point. The patients aged≥70 years obtained a significant long-term OS benefit from PG compared to TG (χ2=8.245, p=0.004), and those aged<70 years showed no difference between TG and PG (χ2=0.167, p=0.682). Conclusions. PG showed an equivalent survival benefit to TG in both the early and locally advanced stages of Siewert type II AEG. For elderly patients, PG is strongly recommended because of its clearer OS benefit compared to TG.

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