Akio Sakaki1, Jun Kanamori1, Koshiro Ishiyama1, Daisuke Kurita1, Junya Oguma1, Hiroyuki Daiko2. 1. Department of Esophageal Surgery, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045, Japan. 2. Department of Esophageal Surgery, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku Tokyo, 104-0045, Japan. hdaiko@ncc.go.jp.
Abstract
INTRODUCTION: 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. MATERIALS AND METHODS: 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. RESULTS: 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 I 31.6% versus type II 24.0%), middle and lower mediastinal (type I 31.6% versus type II 44.0%), paragastric (type I 61.1% versus type II 76.0%), and celiac lymph nodes (type I 16.7% versus type II 25.0%). CONCLUSION: In advanced clinical stages, the metastasis rate is high at all mediastinal lymph node regions in both type I and type II AEGs.
INTRODUCTION: 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. MATERIALS AND METHODS: 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. RESULTS: 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 I 31.6% versus type II 24.0%), middle and lower mediastinal (type I 31.6% versus type II 44.0%), paragastric (type I 61.1% versus type II 76.0%), and celiac lymph nodes (type I 16.7% versus type II 25.0%). CONCLUSION: In advanced clinical stages, the metastasis rate is high at all mediastinal lymph node regions in both type I and type II AEGs.
Authors: A R Davies; H Sandhu; A Pillai; P Sinha; F Mattsson; M J Forshaw; J A Gossage; J Lagergren; W H Allum; R C Mason Journal: Br J Surg Date: 2014-02-24 Impact factor: 6.939
Authors: Susanne Blank; Thomas Schmidt; Patrick Heger; Moritz J Strowitzki; Leila Sisic; Ulrike Heger; Henrik Nienhueser; Georg Martin Haag; Thomas Bruckner; André L Mihaljevic; Katja Ott; Markus W Büchler; Alexis Ulrich Journal: Gastric Cancer Date: 2017-07-06 Impact factor: 7.370