Distribution of lymph node metastases in locally advanced adenocarcinomas of the esophagogastric junction (cT2-4): comparison between Siewert type I and selected Siewert type II tumors.

Langenbeck's Archives of Surgery
Akio SakakiHiroyuki Daiko

Abstract

The distribution of lymph node metastases in locally advanced Siewert type I and type II AEG (adenocarcinoma of the esophagogastric junction) remains unclear. The diversity of data in the literature reflects the non-uniformity of tumor stages and surgical procedures in previous studies. Based on a retrospective analysis from our single-center database, we examined distributions of lymph node metastases in types I and II cT2-4 AEG. The dataset comprised 44 patients; 19 and 25 patients had type I and type II, respectively. All patients underwent subtotal esophagectomy and total mediastinal lymphadenectomy, which included dissection of the upper mediastinal lymph nodes. The histological data of the surgical specimens were analyzed to evaluate metastasis rates in each lymph node station according to the Japanese Esophageal Society (JES) and American Joint Committee on Cancer (AJCC) guidelines. Lymph node metastases were observed in 75.0% cases (n = 33/44). There was no significant difference in the total lymph node metastasis rate between the two groups (type I 73.7% versus type II 76.0%). On comparing each lymph node region separately, no statistically significant differences were noted between the groups: upper mediastinal (type ...Continue Reading

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Citations

Jun 11, 2021·General Thoracic and Cardiovascular Surgery·Mohamed MaatoukMounir Ben Moussa

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