TABLE 2.

Evidence and Recommendations in the literature

Organ	Level of Evidence	Grade of Recommendation	Literature
Colon	I	A	Veldkamp et al.⁹ Lacy et al.¹⁰,¹⁴ COSTSG⁸ Guillou et al.¹¹ Hewett et al.¹² Jayne et al.¹⁵ Buunen et al.¹⁶ Liang et al.¹⁸
Rectum	II	B	Lujan et al.³¹ Pechlivadines et al.³² Zhou et al.³⁴ Ng et al.³⁵ Jayne et al.¹⁵ Guillou et al.¹¹ Braga et al. ³³
Stomach	II	B	Hayashi et al.⁴⁵ Huscher et al.⁴⁶
Esophagus	III	C	Bresadola et al.⁵⁴ Benzoni et al.⁵⁵
Pancreas	III	C	Rotellar et al.⁵⁸ Kooby et al.⁵⁹ Palanivelu et al.⁶³
Liver	III	C	Cai et al.⁷¹ Lee et al.⁷² Topol et al.⁷³
Gastric GIST	IV	none	Hindmarsh et al.⁸⁰
Appendix	IV	none	Bucher et al.⁸³
Adrenal Gland	IV	none	Toniato et al.⁹¹ Walz et al.⁹³
Gall Bladder	V	none	Paoluccci et al.¹⁰⁸
Bile Duct	V	none	Weber et al.¹¹⁵
Small Intestine	V	none	Tricarico et al.¹²⁰ Eccher et al.¹²² Soeda et al.¹²⁵ Kim et al.¹²⁸