title: A 346 case analysis for laparoscopic spleen-preserving no.10 lymph node dissection for proximal gastric cancer: a single center study.
abstract: OBJECTIVE
  This study was designed to formulate a model that efficiently predicts splenic hilar lymph node metastasis (SHLNM) in patients with proximal gastric cancer and to assess indications for laparoscopic spleen-preserving no.10 lymph node dissection (LSPNo.10LND) based on this model.
  
  
  METHODS
  Patients (N = 346) with proximal gastric cancer who underwent LSPNo.10LND from January 2010 to October 2013 were prospectively enrolled and retrospectively evaluated. Groups of patients with and without SHLNM were compared, and independent risk factors for SHLNM determined. An optimal predictive model of SHLNM in patients with proximal gastric cancer was well established.
  
  
  RESULTS
  Of the 346 patients with proximal gastric cancer, only 35 (10.1%) were diagnosed with SHLNM. Depth of invasion, tumor location and metastases to No.7 and No.11 lymph nodes (LNs) were independent risk factors for SHLNM (p<0.0001 each). A model involving depth of invasion, tumor location and metastasis to No.7 and 11 LNs yielded a lowest Akaike's information criterion (AIC) of -913.535 and a highest area under the ROC curve (AUC) of 0.897(95%CI:0.851-0.944). Stratification analysis showed no SHLNMs in the absence of serosal invasion of the lesser curvature and metastases at No.7 and No.11 LNs (T2-3∶0/87, 95% CI: 0.00-4.15).
  
  
  CONCLUSIONS
  A model including depth of invasion, tumor location and metastases at No.7 and No.11 LNs was found optimal for predicting SHLNM for proximal gastric cancers. LSPNo.10LND may be avoided when tumors on the lesser curvature did not show serosal invasion or metastases at No.7 and No.11 LNs.
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Chang-Ming
authors.initials: CM
authors.lastname: Huang
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Jun-Rong
authors.initials: JR
authors.lastname: Zhang
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Chao-Hui
authors.initials: CH
authors.lastname: Zheng
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Xie
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Jia-Bin
authors.initials: JB
authors.lastname: Wang
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Jian-Xian
authors.initials: JX
authors.lastname: Lin
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Lu
authors.affiliation: Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China.
authors.forename: Qi-Yue
authors.initials: QY
authors.lastname: Chen
mesh_terms: D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008197:Lymph Node Excision / Q000379:methods*; D008198:Lymph Nodes / Q000473:pathology / Q000601:surgery*; D008207:Lymphatic Metastasis / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness / Q000473:pathology; D012189:Retrospective Studies; D012307:Risk Factors; D013154:Spleen / Q000601:surgery; D013156:Splenectomy; D013270:Stomach / Q000473:pathology; D013274:Stomach Neoplasms / Q000601:surgery*