Stents for colorectal obstruction: Past, present, and future

Table 3 Comparison of clinical guidelines

	BTS	Proximal colonic lesions	Palliative	Extra colonic obstruction	Benign lesions	Covered vs uncovered
ESGE	Δ	Δ	○	Δ	X	=
ASGE	○	Δ	○	Δ	Δ	<
KSGE	Δ	Δ	○	Δ	Δ	=

ESGE: European Society of Gastrointestinal Endoscopy; ASGE: American Society of Gastrointestinal Endoscopy; KSGE: Korean Society of Gastrointestinal Endoscopy; BTS: Bridge to surgery; SEMS: self-expanding metal stents; ○: Recommended; Δ: Consider stent based on clinical situation; X: Not recommended; >: Covered type is preferred; <: Uncovered type is preferred; =: Same effectiveness.