Fig. 2

PNUYH IOC score 1st row; MC, 0- No discoloration, 1- Discoloration of one side, 2- Discoloration of both sides 2nd row; LB, 0- None or Minor oozing, 1- self hemostasis with clot, 2- one or more pumping lesions requiring immediate intervention 3rd row; PR, 0- Proximal portion hernia, 1- Maintain normal semilunar folds, 2- Disappear semilunar folds 4th row; BP, 0 Entire colon mucosa seen well, 1- Observation of discolored mucous substances 2- Unprepared colon with unvisible mucosa