Journal of Capital Medical University ›› 2022, Vol. 43 ›› Issue (6): 959-965.doi: 10.3969/j.issn.1006-7795.2022.06.022

• Clinical Research • Previous Articles     Next Articles

Risk factors for incomplete resection and prolonged operative duration of endoscopic submucosal dissection for colorectal tumors

Gu Feng, Jiang Wei, Liu Yuhang, Zhai Huihong*   

  1. Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University; National Clinical Research Center for Digestive Diseases; Faculty of Gastroenterology of Capital Medical University; Beijing Key Laboratory for Precancerous Lesion of Digestive Diseases, Beijing 100050, China
  • Received:2022-07-13 Online:2022-12-21 Published:2022-11-30
  • Contact: *E-mail:nxykdx1009@163.com

Abstract: Objective To investigate risk factors for incomplete resection and prolonged operative duration of endoscopic submucosal dissection (ESD) for colorectal tumors. Methods Patients who received ESD procedures for colorectal tumors at Beijing Friendship Hospital, Capital Medical University between February 2014 and November 2021 were included in the study. The Chi-square test and logistic regression model were applied to analyze risk factors for incomplete resection and prolonged operative duration of ESD. Results A total of 433 patients were included in the final analysis. 98.8% of ESD procedures were completed successfully (428/433) and the mean operative time was (67.91±64.28) minutes. Incomplete resection rate was 20.56% (88/428), and risk factors for incomplete resection were tumor size over 4 cm (P=0.001,OR=3.017, 95%CI: 1.536-5.924), severe submucosal fibrosis(P<0.001, OR=5.825, 95%CI: 2.540-13.355)and the non-lifting sign(P=0.025,OR=2.831,95%CI:1.141-7.025). 15.7% of patients (67/428) underwent prolonged ESD which last more than 120 minutes. Female (P=0.044,OR=1.832,95%CI: 1.017-3.300), tumor size over 4cm (P<0.001,OR=10.276,95%CI: 5.340-19.774)were significantly associated with prolonged operative duration. Conclusion Risk factors for incomplete resection included tumor size larger than 4cm, tumor with ulcerative colitis, severe submucosal fibrosis, and the non-lifting sign. Risk factors for prolonged operative time included female patients and larger tumor size.

Key words: colonoscopy, endoscopic submucosal dissection, complete resection, prolonged operation duration, risk factors

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