Table 1 Demographic data of the 73 CRC patients
From: A reappraisal of lymph node dissection in colorectal cancer during primary surgical resection
Variables | Mean ± SD/number (%) |
|---|---|
Gender | |
Female/Male | 30 (41.1)/43 (58.9) |
Age (years) | 65.3 ± 11.2 |
Tumor location | |
Cecum | 4 (5.5) |
Ascending colon | 13 (17.8) |
Transverse colon | 15 (20.5) |
Descending colon | 6 (8.2) |
Sigmoid colon | 19 (26.0) |
Rectum | 16 (21.9) |
Type of surgical resection | |
Segmental resection | 4 (5.5) |
Right hemicolectomy | 25 (34.2) |
Left hemicolectomy | 6 (8.2) |
Anterior resection | 9 (12.3) |
Lower anterior resection | 22 (30.1) |
Sub-total colectomy | 2 (2.7) |
Abdominal-perineal resection | 2 (2.7) |
Hartmann’s procedure | 3 (4.1) |
Tumor configuration | |
Exophytic/ulcerative | 25 (34.2)/48 (65.8) |
Pathological findings | |
T/N/M status and cancer stage, AJCC8th | |
T-status | |
T1/T2/T3/T4 | 4 (5.5)/9 (12.3)/56 (76.7)/4 (5.5) |
N-status | |
N0/N1/N2 | 31 (42.5)/17 (23.3)/25 (34.2) |
M-status | |
M0/M1 | 67 (91.8)/6 (8.2) |
Stage | |
I/II/III/IV | 12 (16.4)/19 (26.0)/36 (49.3)/6 (8.2) |
Maximal tumor diameter (cm) | 5.1 ± 2.6 |
Lymphatic vessel invasion | |
No/yes/not analyzed | 42 (57.5)/22 (30.1)/9 (12.3) |
Venous vessel invasion | |
No/yes/not analyzed | 52 (71.2)/11 (15.1)/10 (13.7) |
Perineural invasion | |
No/yes/not analyzed | 53 (72.6)/4 (5.5)/16 (21.9) |
Histological grade | |
Low/intermediate/high grade | 51 (69.9)/16 (21.9)/6 (8.2) |
No. of TDLNs (25, 50, and 75 percentile) | 20.7 ± 11.8 (10, 19, and 28.5) |
No. of PDLNs (25, 50, and 75 percentile) | 3.6 ± 5.2 (0, 1 and 5) |
Positive rate | 18.1 ± 23.6 |
No. of NDLNs (25, 50, and 75 percentile) | 17.2 ± 11.2 (9, 15, and 26.5) |
Follow-up period (mean, 95%CI) (months) | 70.0 (59.5–80.5) |
Overall survival (mean, 95%CI) (months) | 91.6 (78.6–105.5) |