Table 1.
Patients’ and clinicopathological characteristics.
| Patient Total n = 44 | |
|---|---|
| Gender, n (%) | Male 17 (38.6) Female 27 (61.4) |
| Age (years), median (range) | 72 (42–85) |
| BMI, median (range) | 22.1 (15.1–40.3) |
| Primary colorectal tumor location, n (%) | C 3 (6.8)/A 8(18.2)/T 6 (13.6)/D 2 (4.5)/S 8 (18.2)/R 17 (38.6) |
| Colon 27 (61.4)/Rectum 17 (38.6) | |
| Right side 17 (38.6)/Left side 27 (61.4) | |
| Macroscopic types§, n (%) | Type0 4 (9.1)/Type1 4 (9.1)/Type2 29 (65.9)/Type5 7 (15.9) |
| Maximum tumor diameter (mm), median (range) | 45 (15–180) |
| Pathological T Stage§, n (%) | T1 4 (9.1)/T2 7 (15.9)/T3 21 (47.7)/T4 12 (27.3) |
| Pathological N Stage§, n (%) | N0 24 (54.6)/N1 14 (31.8)/N2 6 (13.6) |
| Pathological Stage§, n (%) | I 9 (20.5)/II 13 (29.5)/III 17 (38.6)/IV 5 (11.4) |
| Histological types¶, n (%) | tub1 9 (20.5)/tub2 29 (65.9)/por 1 (2.3)/muc 5 (11.4) |
| Lymphatic invasion¶, n (%) | Ly0 8 (18.2)/Ly1a 23 (52.3)/Ly1b 8(18.2)/Ly1c 5 (11.4) |
| Venous invasion¶, n (%) | V0 12 (27.2)/V1a 17 (38.6)/V1b 8 (18.2)/V1c 7 (15.9) |
| Perineural invasion¶, n (%) | Pn0 19 (43.2)/Pn1 25 (56.8) |
| Preoperative CEA, n (%) | Normal 26 (59.1) Elevated 18 (40.1) |
| Preoperative CA19-9, n (%) | Normal 32 (72.7) Elevated 12 (27.3) |
C: Cecum, A: Ascending colon, T: Transverse colon, D: Descending colon, S: Sigmoid colon, R: Rectum, Right side: Cecum, ascending colon, and transverse colon, Left side: Descending colon, sigmoid colon, and rectum, CEA: Carcinoembryonic antigen level, normal upper limit at 5 ng/mL, CA19-9: Carbohydrate antigen 19-9 level, normal upper limit at 37 ng/mL, §: UICC TNM classification (the 8th edition); ¶: the Japanese Classification of Colorectal, Appendiceal, and Anal Carcinoma: the 3rd English Edition.