Abstract
Background
Lateral pelvic lymph node (LPN) dissection can improve local control in certain rectal cancer patients with LPN metastasis. However, the effects of this technically complex procedure on perioperative safety and long-term survival of elderly patients (≥ 70 years) remain unclear.
Methods
Locally advanced middle–low rectal cancer patients diagnosed with LPN metastasis who underwent total mesorectal excision (TME) with LPN dissection at three institutions from January 2012 to December 2019 were included in this study. Additionally patients who had neoadjuvant chemoradiotherapy (nCRT) and those who did not were compared.
Results
In total there were 407 patients, including 49 elderly and 358 non-elderly patients, of which 249 were male, with a median age of 58 years (range:18–85 years). In the whole cohort, operation time (280.7 vs. 292.0 min, p = 0.498) and estimated blood loss (100 vs. 100 ml, p = 0.384) were comparable in the elderly and non-elderly groups. There was no significant difference in the incidences of overall complications (24.5% vs. 19.8%, p = 0.448) and severe (Clavien–Dindo grade 3–5) surgical complications (8.2% vs. 7.5%, p = 0.778) between the two groups. However, the incidence of urinary retention (14.3% vs. 5.6%, p = 0.032) and intensive care unit admission (16.3% vs. 6.1%, p = 0.018) was significantly higher in the elderly group compared with those in the non-elderly group. The 3-year overall survival (88.7% vs. 82.1%, p = 0.516) and disease-free survival (81.2% vs. 70.7%, p = 0.352) were comparable between the two groups. Moreover, results in the nCRT cohort were comparable to those in the overall cohort.
Conclusions
Even with nCRT, TME combined with LPN dissection is safe and feasible for elderly patients, demonstrating low mortality and acceptable morbidity. Elderly and non-elderly patients with LPN metastasis who undergo LPN dissection can achieve comparable 3-year survival outcomes.
Trail Registration
ClinicalTrials.gov Identifier: NCT04850027.
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Data availability
Data can be provided upon reasonable request by email directly sent to the corresponding author.
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Acknowledgements
The authors would like to thank TopEdit (www.topeditsci.com) for its linguistic assistance during the preparation of this manuscript. The authors thank all members and staff of the Chinese Lateral Node Collaborative Group for collecting data.
Funding
This study received funding from the National Key Research and Development Program/Prevent and Control Research for Important Non-Communicable Diseases (No. 2019YFC1315705) and the Medicine and Health Technology Innovation Project of the Chinese Academy of Medical Sciences (No. 2017-12M-1e006).
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Sicheng Zhou, Shiwen Mei, Bo Feng, Yingchi Yang, Xin Wang, Quan Wang, and Qian Liu have no conflicts of interest or financial ties to disclose.
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The study was performed with approval by the Ethics Committee of the Cancer Hospital, Chinese Academy of Medical Sciences (NCC 2017-YZ-026, Oct 17, 2017).
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Zhou, S., Mei, S., Feng, B. et al. Feasibility and safety of lateral pelvic lymph node dissection for elderly patients with middle-low rectal cancer: results of a large multicenter lateral node collaborative group study in China. Tech Coloproctol 27, 655–664 (2023). https://doi.org/10.1007/s10151-022-02746-2
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DOI: https://doi.org/10.1007/s10151-022-02746-2