title: Correlation of tumor-positive ratio and number of perigastric lymph nodes with prognosis of patients with surgically-removed gastric carcinoma.
abstract: OBJECTIVE
  To evaluate the tumor-positive ratio and number of perigastric lymph nodes as prognostic factors of gastric carcinoma in surgically-treated patients.
  
  
  METHODS
  The postoperative survival of 169 patients with gastric cancer who were performed D2 curative gastrectomy was analyzed with regard to its lymph node metastasis ratio and number. Meanwhile correlation of tumor-positive ratio and number of perigastric lymph nodes with pathological parameters of these patients was studied.
  
  
  RESULTS
  The overall 5-year survival rate of all the patients studied was 29.6%. The 5-year cumulative survival rate in patients with 1%-20% and more than 20% of tumor-positive lymph nodes was 70.6% and 12.0% respectively, and 46.6% and 17.4% in those with 1-5 and more than 5 of tumor-positive lymph nodes respectively, which were significantly decreased with the increment of involved lymph nodes assessed by either numbers or ratio (P<0.05). Multiple stepwise regression analysis showed that both the positive ratio and number of tumor-involved lymph nodes were sensitive prognostic factors in these surgically-treated patients, which were also significantly correlated with tumor size and depth of submucosal invasion (P<0.05).
  
  
  CONCLUSIONS
  Tumor-positive ratio and number of perigastric lymph nodes are associated with cancer progression and five-year survival rate, and may serve as valuable prognostic factors of gastric cancer in surgically-treated patients.
authors.affiliation: Department of General Surgery, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China. njdyb@sina.com
authors.forename: Yong-Bin
authors.initials: YB
authors.lastname: Ding
authors.forename: Guo-Yu
authors.initials: GY
authors.lastname: Chen
authors.forename: Jian-Guo
authors.initials: JG
authors.lastname: Xia
authors.forename: Xi-Wei
authors.initials: XW
authors.lastname: Zang
authors.forename: Hong-Yu
authors.initials: HY
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Yang
authors.forename: Yue-Xian
authors.initials: YX
authors.lastname: Liu
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005743:Gastrectomy; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011379:Prognosis; D013274:Stomach Neoplasms / Q000401:mortality / Q000556:secondary / Q000601:surgery; D016019:Survival Analysis