Abstract
Objectives
The purpose of this study was to evaluate the risk factors that influence the difficulty of performing laparoscopic spleen-preserving splenic hilar lymph node dissection (SHLND) for gastric cancer and to establish a simple and effective scoring system to predict the surgical difficulty preoperatively.
Methods
Between January 2011 and December 2013, we prospectively collected and retrospectively analyzed the medical records of 317 patients with upper- or middle-third gastric cancer who underwent laparoscopic spleen-preserving SHLND. Univariate and multivariate analyses were performed to determine the independent predictors for surgical difficulty based on the operation time during spleen-preserving SHLND. A logistic regression model was used to identify determinant variables and construct a predictive difficulty scoring system.
Results
Multivariate analysis showed that gender, body mass index (BMI), number of splenic lobar arteries (SLAs), and type of SLA were independently predictive factors of operation time. According to these factors, we developed a predictive surgical difficulty scoring system and the difficulty levels are divided into 0, 1, 2, 3, and 4 points or more. Based on the relative risk, we stratified the surgical difficulty into the following three divisions: 0 low difficulty, 1–2 intermediate difficulty, and 3 points or more high difficulty. The patients with long operation time accounted for 19.6, 43.6, and 90.9 % for the three groups, respectively (p < 0.001). The area under the receiver operating characteristic curve for the logistic regression model and the simplified difficulty scoring prediction model was 0.717 and 0.715, respectively.
Conclusions
Based on four independent risk factors, including gender, BMI, number of SLAs, and type of SLA, we developed a simple and effective scoring system to predict the difficulty of laparoscopic spleen-preserving SHLND preoperatively. This novel scoring system might aid surgeons with different experience in performing operations at different levels of difficulty.
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Acknowledgments
This study was funded by the National Key Clinical Specialty Discipline Construction program of China (No. [2012]649) and the Key Projects of Science and Technology Plan of Fujian Province (No. 2014Y0025). The authors are thankful to Fujian Medical University Union Hospital for hermanagement of our gastric cancer patient database.
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Drs. Ping Li, Chang-Ming Huang, Jian-Xian Lin, Chao-Hui Zheng, Jian-Wei Xie, Jia-Bin Wang, Jun Lu, Qi-Yue Chen, Long-Long Cao, Mi Lin, Ru-Hong Tu, Rui Fu Chen have no conflicts of interest or financial ties to disclose.
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Li, P., Huang, CM., Lin, JX. et al. A preoperatively predictive difficulty scoring system for laparoscopic spleen-preserving splenic hilar lymph node dissection for gastric cancer: experience from a large-scale single center. Surg Endosc 30, 4092–4101 (2016). https://doi.org/10.1007/s00464-015-4725-5
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DOI: https://doi.org/10.1007/s00464-015-4725-5