Early bile duct cancer

Table 6 Macroscopic classification of early bile duct cancer

	IG type	PI type	MF type	Total
Cha et al[4]	35 (57%)	17 (28%)	1 (2%)	611
Tsunoda et al[5]	7 (88%)	1 (13%)	0	8
Yamaguchi[6]	7 (100%)	0	0	7
Mizumoto et al[7]	10 (71%)	3 (21%)	1 (7%)	14
Tamada et al[10]	8 (80%)	0	2 (20%)	10
Lim et al[11]	10 (47%)	1 (5%)	2 (10%)	21
Kozuka et al[36]	7 (54%)	5 (39%)	1 (8%)	13

IG: intraductal-growing; PI: periductal-infiltrating; MF: mass-forming.

¹Eight patients could not be classified into any types due to subtle gross changes.