Predictive factors for technically difficult endoscopic submucosal dissection in the colorectum

Keisuke Hori; Toshio Uraoka; Keita Harada; Reiji Higashi; Yoshiro Kawahara; Hiroyuki Okada; Hemchand Ramberan; Naohisa Yahagi; Kazuhide Yamamoto

doi:10.1055/s-0034-1377205

Endoscopy, Table of Contents

Endoscopy 2014; 46(10): 862-870
DOI: 10.1055/s-0034-1377205

Original article

Predictive factors for technically difficult endoscopic submucosal dissection in the colorectum

Authors

Keisuke Hori

¹Department of Endoscopy, Okayama University Hospital, Japan
Toshio Uraoka

¹Department of Endoscopy, Okayama University Hospital, Japan

²Division of Research and Development for Minimally Invasive Treatment, Cancer Center, School of Medicine, Keio University, Tokyo, Japan
Keita Harada

¹Department of Endoscopy, Okayama University Hospital, Japan
Reiji Higashi

³Department of Internal Medicine, Hiroshima City Hospital, Japan.
Yoshiro Kawahara

¹Department of Endoscopy, Okayama University Hospital, Japan
Hiroyuki Okada

¹Department of Endoscopy, Okayama University Hospital, Japan
Hemchand Ramberan

⁴University of Tennessee College of Medicine, Academic Gastroenterology, Program in Advanced Therapeutic and Interventional Endoscopy, Erlanger Hospital, Chattanooga, Tennessee, USA
Naohisa Yahagi

²Division of Research and Development for Minimally Invasive Treatment, Cancer Center, School of Medicine, Keio University, Tokyo, Japan
Kazuhide Yamamoto

⁵Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan

Abstract

Background and study aims: Because of technical difficulty, colorectal endoscopic submucosal dissection (CR-ESD) is not widely performed. We aimed to determine risk factors for such technical difficulty as defined by long procedure duration (≥ 150 min), perforation, and piecemeal resection.

Patients and methods: Patients with consecutive colorectal tumors treated with ESD between April 2006 and December 2010 were enrolled in a prospective cohort study. For prediction of technical difficulty, three types of factor were investigated: tumor location, tumor type, and colonoscopy-related. Cases were subsequently categorized into earlier and later periods (April 2006 – August 2008, 123 lesions; September 2008 – December 2010, 124 lesions). Variables were analyzed using multiple logistic regression, with subgroup analyses for each period.

Results: 247 lesions were analyzed. Flexure location was an independent risk factor for technical difficulty as measured by longer procedure duration (odds ratio [OR] 4.1, 95 % confidence interval [95 %CI] 1.1 – 14.9), piecemeal resection (4.7, 1.1 – 17.2), or perforation (8.8, 1.1 – 56.8). Tumor with scarring or locally recurrent was a risk factor for longer procedure duration (4.7, 1.7 – 13.7), and for piecemeal resection (7.8, 2.4 – 25.0). Tumor of size ≥ 50 mm or spreading across ≥ 2 folds was the strongest independent risk factor for longer duration (6.3, 2.8 – 15.4), and was an independent risk factor for longer duration in both time periods (earlier, 3.3, 1.1 – 10.4; later, 27.4, 7.4 – 138.0). Flexure location was an independent risk factor for perforation (13.9, 1.5 – 129.1) and for piecemeal resection (5.1, 0.9 – 25.2) in the earlier but not the later period.

Conclusions: Factors predicting technical difficulty of CR-ESDs were clarified. Their importance was influenced by the increasing experience of the endoscopist.

Full Text

References

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