Abstract
Aim
Laparoscopic total mesorectal excision (LaTME) following preoperative chemoradiotherapy (PCRT) in locally advanced rectal cancer (LARC) is technically demanding. The present study is intended to evaluate predictive factors of surgical difficulty of LaTME following PCRT by using pelvimetric and nutritional factors.
Method
Consecutive LARC patients receiving LaTME after PCRT were included. Surgical difficulty was classified based upon intraoperative (operation time, blood loss, and conversion) and postoperative outcomes (postoperative hospital stay and morbidities). Pelvimetry was performed using preoperative T2-weighted MRI. Nutritional factors such as albumin-to-globulin ratio (AGR) and prognostic nutritional index (PNI) were calculated. Multivariable logistic analysis was used to identify predictors of high surgical difficulty. A predictive nomogram was developed and validated internally.
Results
Among 294 patients included, 36 (12.4%) patients were graded as high surgical difficulty. Logistic regression analysis demonstrated that previous abdominal surgery (OR = 6.080, P = 0.001), tumor diameter (OR = 1.732, P = 0.003), intersphincteric resection (vs. low anterior resection, OR = 13.241, P < 0.001), interspinous distance (OR = 0.505, P = 0.009), and preoperative AGR (OR = 0.041, P = 0.024) were independently predictive of high surgical difficulty of LaTME after PCRT. Then, a predictive nomogram was built (C-index = 0.867).
Conclusion
Besides previous abdominal surgery, type of surgery (intersphincteric resection), tumor diameter, and interspinous distance, we found that preoperative AGR could be useful for the prediction of surgical difficulty of LaTME after PCRT. A predictive nomogram for surgical difficulty may aid in planning an appropriate approach for rectal cancer surgery after PCRT.
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Acknowledgements
The authors thank all the staff in Department of colorectal surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, People’s Republic of China.
Funding
This study was supported by Construction Project of Fujian Province Minimally Invasive Medical Center (Grant Number: [2017]171), Startup Fund for Scientific Research, Fujian Medical University (Grant Number: 2017XQ1028), Joint Funds for the Innovation of Science and Technology, Fujian province (Grant Number: 2018Y9030), and Young and Middle-aged Backbone Training Project in the Health System of Fujian province (Grant Number: 2019-ZQN-45).
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Sun, Y., Chen, J., Ye, C. et al. Pelvimetric and Nutritional Factors Predicting Surgical Difficulty in Laparoscopic Resection for Rectal Cancer Following Preoperative Chemoradiotherapy. World J Surg 45, 2261–2269 (2021). https://doi.org/10.1007/s00268-021-06080-w
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DOI: https://doi.org/10.1007/s00268-021-06080-w