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Table 1 Clinical characteristics of the patient cohort

From: Predicting prognosis according to preoperative chemotherapy response in patients with locally advanced lower rectal cancer

 N = 102
Sex, N (%)
 Male69 (67.6)
 Female33 (32.4)
 Age (years), median (range)60 (27–74)
 BMI (kg/m2), median (range)23.2 (14.8–33.4)
 AV distance (cm), median (range)4.0 (0.0–8.0)
 CEA level (ng/mL), median (range)3.6 (0.1–381.0)
cT stage N (%)
 T2/T3/T42 (2.0)/ 77 (75.5)/ 23 (22.5)
cN stage, N (%)
 Negative52 (51.0)
 Positive50 (49.0)
Clinical LPLN metastasis, N (%)
 Negative78 (76.5)
 Positive24 (23.5)
Clinical CRM, N (%)
 Negative73 (71.6)
 Positive29 (28.4)
mrEMVI, N (%)
Negative78 (76.5)
Positive24 (23.5)
ymrEMVI, N (%)
 Negative80 (78.4)
 Positive22 (21.6)
Surgical procedure, N (%)
 Low anterior resection16 (15.6)
 Intersphincteric resection73 (71.6)
 Abdominoperineal resection12 (11.8)
 Total colectomy1 (1.0)
Operation type, N (%)
 Open33 (32.4)
 Laparoscopic69 (67.6)
  1. BMI body mass index, AV anal verge, CEA carcinoembryonic antigen, LPLN lateral pelvic lymph node, CRM circumferential resection margin, mrEMVI extramural venous invasion based on magnetic resonance imaging before neoadjuvant chemotherapy, ymrEMVI extramural venous invasion based on magnetic resonance imaging after neoadjuvant chemotherapy