1) 18 years old or older, 2) Histologically proven gastric adenocarcinoma 3) cT1N0M0, 4) Tumor located in upper third of the stomach, 5) Distant from cardia more than 1cm, 6) Tumor size 4cm or lesser, 7) single cancer, 8) Written informed consent
Function-sparing gastrectomy (local resection with left gastric artery lymphatic basin dissection) is performed for patients who meet the eligibility criteria. If intraoperative frozen biopsy reveals positive lymph node metastasis (LNM), standard gastrectomy is performed. If postoperative pathology reveals positive resection margins or lymph node metastasis, a two-stage standard gastrectomy is performed.
介入コード / Code
D005743
介入キーワード /Keyword
local resection of the stomach, lymphatic basin dissection
local resection of the stomach, lymphatic basin dissection
主たる評価項目 / Primary Outcome(s)
周術期合併症発生率(術後30日以内に発生, Clavien-Dindo分類 Grade2以上)
Surgical morbidity: with in 30 days after surgery, Glade 2 or more by the Clavien-Dindo classification
Efficacy: number or retrieved lymph nodes (LNs), number of pathologically positive LNs, surgical margin status of the stomach, depth of tumor invasion, recurrence, recurrence pattern, 3-years relapse free survival ratio, 3-years survival status, posr operative body weight change, questioneer of quality life after gastrectomy
Safety: operation time, intraoperative blood loss, intraoperative accident, postoperative hospital stay