Articles Vol. 67 No. 7 26/07/2026

ENDOSCOPIC CHARACTERISTICS ACCORDING TO THE WASP CLASSIFICATION AND OUTCOMES OF COLD SNARE POLYPECTOMY FOR NON-PEDUNCULATED COLORECTAL POLYPS SMALLER THAN 10 MM: A PILOT STUDY

Nguyen Van Binh1,2,3,4, Huynh Thi Hong Ngoc5,6, Do Duc Tri Nhan7,8, Huynh Ngoc Nguyen Khanh7,8, Danh Minh2,4, Nguyen Thanh Liem1,3
1 Can Tho University of Medicine and Pharmacy
2 Phuong Chau International Hospital in Soc Trang
3 Trường Đại học Y Dược Cần Thơ
4 Bệnh viện Quốc tế Phương Châu Sóc Trăng
5 Can Tho Central General Hospital
6 Bệnh viện Đa khoa Trung ương Cần Thơ
7 Phuong Chau International Hospital in Can Tho
8 Bệnh viện Quốc tế Phương Châu Cần Thơ
DOI: 10.52163/yhc.v67i7.5903
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Keywords
Colorectal polyps, WASP classification, cold snare polypectomy.
Abstract

Objective: To describe endoscopic characteristics based on the WASP classification and evaluate the outcomes of cold snare polypectomy for non-pedunculated polyps smaller than 10 mm.

Methods: A Pilot study was conducted on 30 patients who underwent colonoscopy at Phuong Chau International Hospital in Can Tho and Phuong Chau International Hospital in Soc Trang from May 2025 to August 2025. All polyps smaller than 10 mm were removed using cold snare polypectomy. Clinical, endoscopic, and histopathological characteristics and complications were analysed.

Results: The mean age was 45.6 ± 11.6 years; females accounted for 56.7%. A total of 65 polyps were identified, with the majority located in the left colon (43.1%) and the right colon (41.5%). Serrated polyps accounted for 7.7%. Positive WASP classification was observed in NICE 1 (15.4%) and NICE 2 (12.8%). The complete resection rate was 100%. The rate of early bleeding complications was low (3.3%), with no delayed complications recorded.

Conclusion: Endoscopy with WASP classification is valuable in lesion identification. Cold snare polypectomy is a safe and effective method for removing small non-pedunculated colorectal polyps.

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