Cold Snare Excision is a Safe Method for Diminutive Colorectal Polyps
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YOSHIHARU UNO, KATUTOSHI OBARA,1 PING ZHENG,2 SHIN MIURA, AYAKO ODAGIRI, JUICHI SAKAMOTO and AKIHIRO MUNAKATA
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The First Department of Internal Medicine, Hirosaki University School of Medicine, Hirosaki 036, 1The Second Department of Internal Medicine, Fukushima Medical College, Fukushima 960-12, and 2The Department of Digestive Medicine, Shanghai Second Medical University, Shanghai 200001, P. R. China
Cold snare excision (CSE) has proved to be an effective method for the destruction of diminutive polyps of the colon and rectum. We investigated the correlation between polyp size and bleeding time at the resected end after CSE, and also an appropriate measuring method using CSE. Eighty patients with single polyps were examined. Each polyp was identified as being 5 mm in diameter or smaller using the open-biopsy forceps technique (OBFT). The size of the polyp was calculated using our measuring system (SMS). Of the polyps identified as being 5 mm in diameter or less using OBFT, 15% were 6 mm or more using the SMS. CSE was performed for each polyp, and the time taken for the hemostasis (bleeding time of the CSE; BTCSE) was determined. In seventy-seven polyps that were 6 mm or smaller in SMS, a correlation was noted between SMS and BTCSE. In three polyps that were 7 mm or more by SMS, hemostasis took 10 min or more after CSE, and required electrocoagulation. These results suggest that CSE is a safe method for the removal of polyps determined to be 6 mm in diameter or smaller using the SMS.
Key words---
colorectal polyp; cold snare excision; bleeding time
© 1997 Tohoku University Medical Press
Tohoku J. Exp. Med., 1997, 183, 243-249
Address for reprints:
Yoshiharu Uno, The First Department of Internal Medicine, Hirosaki University School of Medicine, Hirosaki 036, Japan.
e-mail: RUNO-hki@umin.u-tokyo.ac.jp
Presented in part at the annual meeting of the American Society for Gastrointestinal Endoscopy, May 1995, Los Angeles, California, USA, and Shanghai International Conference of Gastroenterology, November 1996, Shanghai, China.
This works was supported in part by grant in the Japanese Foundation for Research and Promotion of Endoscopy.
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