Table 1: Characteristics of colorectal lesions analyzed by digital chromoendoscopy (FICE group) and real-time chromoendoscopy (indigo carmine group).

VariableFICE (95) (%)Indigo carmine (120) (%)

Sex
 Female 35 (53.8) 39 (56.5)
 Male30 (46.2)30 (43.5)
Mean age (years)60.260.9
Histopathology
 Neoplastic67 (70.5)86 (71.7)
 Nonneoplastic28 (29.5)34 (28.3)
Histopathology
 Tubular adenoma57 (60)68 (56.7)
 Tubulovillous adenoma9 (9.5)14 (11.6)
 Serrated adenoma1 (1.1)4 (3.3)
 Hyperplastic polyp28 (29.5)34 (28.3)
Macroscopic type
 Flat55 (57.9)77 (64.2)
 Protruded40 (42.1)43 (35.8)
Macroscopic classification
 0-IIa44 (46.3)72 (60)
 0-IIa + dep7 (7.4)2 (1.7)
 0-IIa + IIc2 (2.1)2 (1.7)
 0-IIc + IIa1 (1.1)1 (0.8)
 0-IIc1 (1.1)0
 0-Is37 (38.9)41 (34.1)
 0-Isp1 (1.1)2 (1.7)
 0-Ip2 (2.1)0
Location
 Rectum 19 (20)20 (16.7)
 Sigmoid colon23 (24.2) 25 (20.8)
 Descending colon18 (18.9)22 (18.3)
 Transverse colon15 (15.8)21 (17.5)
 Ascending colon12 (12.6)26 (21.7)
 Cecum8 (8.4)6 (5%)

FICE: Fujinon intelligent color enhancement.