Editorial
Copyright ©2012 Baishideng Publishing Group Co.
World J Gastrointest Endosc. Jul 16, 2012; 4(7): 269-280
Published online Jul 16, 2012. doi: 10.4253/wjge.v4.i7.269
Table 1 Defintion of difficult colon polyp
Shape (morphology)Flat or hard to see
Sessile > 15 mm
Carpet shaped (laterally spreading tumor)
Villous or granular
Irregular surface, irregular pit pattern, villous or granular
If pedunculated, thick or short pedicle
Size< 1.5 cm
Large > 3 cm
Big head
NumberMultiple (> 3)
LocationRight colon and cecum
Ileoceccal valve
Appendix orifice
On top or behind of folds
Difficult endoscopic position