Surgical strategy for adenocarcinoma of esophagogastric junction / 中华胃肠外科杂志

The incidence of adenocarcinoma of esophagogastric junction (AEG) has been increasing. The surgical strategy for AEG remains controversial. The Siewert definition of AEG facilitates decision of surgical approach, while TNM stage for AEG contributes to prognosis evaluation and clinical decision making. Generally, transthoracic procedure is suitable for Siewert I and transhiatal is suitable for Siewert III. The lymph node drainage of AEG is characterized by simultaneous drainage to the mediastinal and abdominal lymphatic pathways. The optimal lymphadenectomy depends on the distribution of lymph node metastasis. Reconstruction of the digestive tract requires safety as a precondition, taking into account of postoperative complications and quality of life. For AEG patients undergoing total gastrectomy, Roux-en-Y anastomosis is more common. For those undergoing proximal gastrectomy, esophageal residual stomach (tubular stomach) anastomosis is more common, but the proportion of postoperative reflux esophagitis is higher. Some documents have revealed advantages of minimally invasive laparoscopic operation for AEG, but higher level evidences is needed.

Comparison of the superiority of different TNM staging systems in Siewert III adenocarcinoma of esophagogastric junction / 中华胃肠外科杂志

OBJECTIVE@#To compare the prognostic value of TNM staging systems in the 7th edition and the 8th edition AJCC in Siewert III adenocarcinoma of esophagogastric junction (AEG).@*METHODS@#Data of 160 patients with Siewert III AEG who underwent radical surgery (R0) from January 2009 to January 2013 in PLA General Hospital were collected retrospectively. Exclusion standards:(1)preoperative neoadjuvant chemoradiotherapy;(2)with distant metastasis before or during operation;(3)palliative operation or R1/R2 resection;(4)pathological type as non-adenocarcinoma;(5)number of retrieved lymph nodes less than 16;(6)diagnosed with other malignant tumors concurrently or within 5 years after operation;(7)incomplete clinical or follow-up data. According to the above criteria, 160 patients were included in this study finally. All the patients underwent radical total or proximal gastrectomy by abdominal approach. D1 or D1+ lymph node dissection was performed in early patients and D2 in advanced patients. All the patients were re-staged by the gastric cancer TNM7 (G7), the gastric cancer TNM8 (G8) and the esophageal cancer TNM7(E7). Univariate analysis and Cox regression analysis were performed. Kappa value and Akaike's information criterion (AIC, the less AIC, the better prognosis) value were compared between different staging systems in agreement and predicting prognosis.@*RESULTS@#There were 128 males and 32 females(sex ratio 4:1), and the average age was (60.2±11.6) years and 17 patients with basic disease. Of all the patients, 133 cases (83.1%) underwent radical total gastrectomy and 27 cases (16.9%) underwent proximal gastrectomy. The median number of dissected lymph nodes were 31 and the median number of positive lymph nodes were 4. Multivariate analysis showed that the G7, G8, E7 staging systems were independent prognostic factors (HR=1.374, 1.407 and 1.305 respectively,all P<0.001). Stage migration between G7 and G8 were only observed in IIIA, IIIB and IIIC, and stage migration rate was 8.1% (13/160), and the agreement was very good (weighted Kappa 0.904, P<0.001). However, the difference between G8 and E7 was quite obvious, stage migration rate was 40.6%(65/160), and the agreement between G8 and E7 was not satisfied (weighted Kappa 0.536, P<0.001). AIC value was 811.4 in G8, 812.8 in G7 and 815.9 in E7, respectively.@*CONCLUSION@#Compared with G7 and E7 staging systems, the G8 staging system is superior in predicting the prognosis of patients with Siewert III AEG.

Multidisciplinary treatment of adenocarcinoma of esophagogastric junction / 中华消化外科杂志

The incidence of adenocarcinoma of esophagogastric junction (AEG) is increasing,but its treatment strategy is still controversial.Surgery is the main strategy of multidisciplinary treatment.Siewert classification and TNM staging play a decisive role in the choice of operative approach,clinical decision and prognosis.Perioperative chemoradiotherapy plays an important role in the multidisciplinary treatment of AEG,and more researches support neoadjuvant therapy in patients with AEG.What's more,targeted therapy has become an integral part of multidisciplinary treatment of AEG with the constantly emergence of targeted drugs.In addition,the particularity of AEG determines that its treatment requires multidisciplinary cooperation,and the multidisciplinary team is expected to improve the prognosis of AEG patients.