Surgical Endoscopy

, Volume 32, Issue 6, pp 2814–2821 | Cite as

Endoscopic submucosal tunnel dissection and endoscopic submucosal dissection for large superficial esophageal squamous cell neoplasm: efficacy and safety study to guide future practice

  • Wengang Zhang
  • Yaqi Zhai
  • Ningli Chai
  • Enqiang Linghu
  • Zhongsheng Lu
  • Huikai Li
  • Xiuxue Feng


Background and study aims

ESTD and ESD are currently the two primary treatment options for superficial esophageal squamous cell neoplasm (SESCN) in China. However, in larger cases, ESD proves to be technically challenging and time saving, whereas ESTD exhibits promising efficacy. This study aims to evaluate the efficacy and safety of these two techniques for large SESCN.

Patients and methods

A total of 150 patients with solitary large SESCN that underwent either ESTD (n = 52) or ESD (n = 98) between August 2011 and June 2016 were included in this study. Both efficacy and safety clinical data were collected and analyzed.


All of the 150 patients were found to successfully undergo ESTD or ESD with 92.68 ± 67.96 (mean ± SD) min. The specimen area was measured to be 13.79 ± 7.44 (mean ± SD) cm2 and the dissection speed was 17.99 ± 10.40 (mean ± SD) mm2/min. En bloc resection and R0 resection were achieved in 91.33% (137/150) and 86.00% (129/150) of the cases, respectively. A total of 8.67% (13/150) were found to have intra-operative adverse events. Based on statistical analysis, ESTD was found to have a higher dissection speed and a similar adverse event rate compared with ESD. Moreover, a long operation time was found to be an independent risk factor for intra-operative adverse events.


ESTD and ESD both were found to be effective and safe treatment options for the treatment of large SESCN. ESTD appeared to improve operation efficacy, which was reflected in a higher dissection speed compared with ESD. We also demonstrate that long operation times should be avoided as much as possible in order to reduce intra-operative adverse events.


Endoscopic submucosal tunnel dissection Endoscopic submucosal dissection Superficial esophageal squamous cell neoplasm 



The present study was supported by grants from the National Key R&D Program of China (Grant No. 2016YFC1303601).

Compliance with ethical standards


Drs. Wengang Zhang, Yaqi Zhai, Ningli Chai, Enqiang Linghu, Zhongsheng Lu, Huikai Li, and Xiuxue Feng have no conflicts of interest or financial ties to disclose.


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© Springer Science+Business Media, LLC, part of Springer Nature 2017

Authors and Affiliations

  1. 1.Department of GastroenterologyChinese PLA General HospitalBeijingChina

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