Predictive factors for early distant metastasis after neoadjuvant chemoradiotherapy in locally advanced rectal cancer

Table 1 Baseline patients’ characteristics, n (%)

Characteristics	Total (n = 127)
Age (yr)
Median (range)	65 (27-92)
Gender
Male	93 (73.2)
Female	34 (26.8)
Performance status
0	99 (78.0)
1	25 (19.7)
2	3 (2.4)
Grade
Well differentiated	46 (36.2)
Moderately differentiated	78 (61.4)
Poorly differentiated	3 (2.4)
Tumor location
Distal (10-15 cm from AV)	44 (34.6)
Mid (5-10 cm from AV)	48 (37.8)
Proximal (0-5 cm from AV)	35 (27.6)
Mesorectal fascia involvement
No	118 (92.9)
Yes	9 (7.1)
Extramural venous invasion
No	50 (39.4)
Yes	41 (32.3)
Unknown1	36 (28.3)
AJCC 8th T stage
cT1	0
cT2	17 (13.4)
cT3	94 (74.0)
cT4	16 (12.6)
AJCC 8th N stage
cN0	7 (5.5)
cN+	120 (94.5)
AJCC 8th M stage
cM0	120 (94.5)
cM1	7 (5.5)
AJCC 8th stage
cI	0
cII	7 (5.5)
cIII	113 (89.0)
cIV	7 (5.5)
Surgery
No	34 (26.8)
Local excision	3 (2.4)
Low anterior resection	77 (60.6)
Abdominoperineal resection	13 (10.2)
Adjuvant chemotherapy
No	58 (45.7)
Yes	69 (54.3)

¹Patients who did not take magnetic resonance image of the rectum.

AV: Anal verge; AJCC: American Joint Committee on Cancer.