Long-term outcomes of endoscopic treatment for colorectal laterally spreading tumor: a large-scale multicenter retrospective study from China

Yue Li, Yue Zhang, Yao Chen, Yusi Wang, Lizhou Dou, Xianfei Wang, Qiang Zhan, Guoqiang Zhang, Mengbin Qin, Fayad Lea, Jiean Huang, Qiang Zhang, Fachao Zhi, Guiyong Peng, Guiqi Wang, Vivek Kumbhari, Side Liu

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Laterally spreading tumor (LST) is a type of precancerous lesion of colorectal cancer with high malignant potential. The present study aimed to evaluate long-term outcomes of endoscopic treatment for LST in Chinese patients. Methods: This study was a retrospective review of data collected from 653 included patients with LST from six regional representative hospitals in China between January 2007 and January 2017. Demographic characteristics, endoscopic features of LST, operation-related data, and follow-up results were collected and analyzed. Results: LST-granular type (LST-G, 80.3%) was much more common than LST-non-grandular type (LST-NG, 19.7%). The overall submucosal invasion rate of all LSTs was 6.1% and the submucosal invasion rate of LST-NG was significantly higher than that of LST-G (6.79% vs. 3.87%, p = 0.000). The en bloc resection rate of ESD and EMR treatment was 96% and 93.7%, respectively, with pathologic R0 resection rate of 90.1% and 82.8%. After an average duration of follow-up about 34.52 ± 11.76 months, the recurrence rate of ESD was 3.47%, and the recurrence rate of EMR was 8.8% after an average follow-up of about 38.44 ± 4.42 months. However, the recurrence rate of ESD was much lower than piecemeal EMR for LST (3.47% vs. 8.62%, p = 0.017). Retroflexion-assisted technique applied for resection of rectal LST was associated with a significantly shortened operating time (85.40 min vs. 174.18 min, p = 0.002). Conclusion: Endoscopic resection is a safe and efficient modality for the treatment of colorectal LST with a relatively low recurrence rate and shortened operating time with the use of retroflexion.

Original languageEnglish (US)
Pages (from-to)736-744
Number of pages9
JournalSurgical endoscopy
Volume35
Issue number2
DOIs
StatePublished - Feb 2021

Keywords

  • Endoscopic treatment
  • Laterally spreading tumor (LST)
  • Long-term outcomes

ASJC Scopus subject areas

  • Surgery

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