Table 1: Clinical characteristics of the study subjects.

Histology
 Adenoma44  (26%)
 M ca66  (39%)
 SM-S ca15  (9%)
 SM-M ca39  (23%)
 MP ca# or over4  (3%)
Location
 Rectum74  (44%)
 Sigmoid34 (20%)
 Descending10  (6%)
 Transverse 21  (13%)
 Ascending20  (12%)
 Cecum9  (5%)
Morphology
 Protruded20  (12%)
 Superficial13  (8%)
 LST* granular57  (34%)
 LST* nongranular74  (44%)
 Others 4  (2%)
Size (mm)
 ~914  (8%)
 10~1955  (33%)
 20~82  (49%)
 unknown17 (10%)

M ca: mucosal cancer, SM-S ca: submucosal slight invaded cancer.
SM-M ca: submucosal massive invaded cancer.
#MP ca: muscularis propria invaded cancer, *LST: laterally spreading tumor.