Background and Aims
Endoscopic submucosal dissection (ESD) of colorectal submucosal tumors (SMTs) is becoming
increasingly common; however, there have been few large consecutive studies analyzing
its therapeutic efficacy and safety. The aim of this study was to evaluate the efficacy,
safety, and long-term outcomes of ESD for colorectal SMTs.
Methods
This retrospective study included 412 consecutive patients with colorectal SMTs who
underwent ESD at the Zhongshan Hospital of Fudan University from January 2008 to July
2014. Tumor histopathology, completeness of resection, adverse events, tumor recurrence,
and distant metastasis were analyzed.
Results
Complete resection was achieved for 358 lesions (86.9%). Thirteen patients had serious
adverse events (3.2%) including bleeding and perforation, and 28 patients (6.8%) had
post-ESD electrocoagulation syndrome (PEECS). Because more ESDs for colorectal SMTs
were performed by endoscopists, the rate of complete resection increased (78.5% vs
88.5%), and the rate of serious adverse events decreased (9.2% vs 2.0%). SMTs in the
colon increased the risk of incomplete resection (19.6% vs 11.3%), serious adverse
events (8.7% vs 1.6%), and PEECS (16.3% vs 4.1%). SMTs originating from the muscularis
propria and sized ≥20 mm increased the rate of PEECS (22.7% vs 5.9% and 31.3% vs 5.8%,
respectively).
Conclusion
ESD is effective for resection of colorectal SMTs and rarely causes serious adverse
events. Tumor location and the experience of endoscopists influence the complete resection
rate and the development of serious adverse events. ESD is feasible for large tumors
and tumors in the muscularis propria, but this is associated with relatively high
risks of adverse events.
Abbreviations:
ESD (endoscopic submucosal dissection), NET (neuroendocrine tumor), PEECS (post-ESD electrocoagulation syndrome), SMT (submucosal tumor)To read this article in full you will need to make a payment
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Article Info
Publication History
Published online: October 05, 2017
Accepted:
September 19,
2017
Received:
February 20,
2017
Footnotes
DISCLOSURE: The project was supported by the Shanghai Engineering and Research Center of Diagnostic and Therapeutic Endoscopy (16DZ2280900), the National Natural Science Foundation of China (81672329), the Project of Shanghai Municipal Commission of Health and Family Planning (201440393), and the Science and Technology Commission Foundation of Shanghai Municipality (16411950401, 16411950406). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. All other authors disclosed no financial relationships relevant to this publication.
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Access this article on ScienceDirectLinked Article
- Endoscopic submucosal dissection for resection of submucosal tumors of the colon and rectum: Within reach, or the edge of tomorrow?Gastrointestinal EndoscopyVol. 87Issue 2
- PreviewThe terms submucosal tumor (SMT) and subepithelial tumor (SET) are often used synonymously. SET has been suggested to more distinctly describe tumors of the muscularis mucosa, submucosal layer, and muscularis propria, whereas SMT more specifically describes tumors arising from the submucosal layer. Although SETs are usually benign, a subset including gastrointestinal stromal tumors (GIST), neuroendocrine tumors (NET), and granular cell tumors (GCT) have malignant potential. Management options for smaller SETs with suspected malignant potential have typically included serial endoscopic and endosonographic surveillance or resection with EMR, whereas larger lesions are generally referred for surgical resection.
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