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Table 1 Clinical and pathological characteristics of the patients and preoperative PET results

From: Efficacy of positron emission tomography in diagnosis of lateral lymph node metastases in patients with rectal Cancer: a retrospective study

Characteristics

N = 84

Age (years)

Median/Range

62 (27–83)

Sex (male/female)

53 (63%)/31 (37%)

Preoperative chemotherapy (+/−)

66 (79%)/18 (21%)

Preoperative radiation therapy (+/−)

3 (4%)/81 (96%)

Tumor differentiation (well differentiated tubular adenocarcinoma/moderately differentiated tubular adenocarcinoma/mucinous adenocarcinoma)

43/37/4

Pathological T stage (T0/Tis/T1/T2/T3/T4)

6/1/8/21/37/11

Pathological N stage (N0/N1/N2/)

51/18/15

LLN metastasis (+/−)

15 (18%)/69 (82%)

The median number of resected LLND

Right side / Left side

9 (6–12)/ 10 (7–13)

Location of LLN metastasis (263R/263 L/273R/273 L/283R/283 L/293R/293 L)

4/5/0/0/6/5/0/1

Median and variance of short axis diameter for lateral lymph nodes

Positive [median, variance]/ negative [median, variance]

[10, 10.31/ 4.8, 3.8]

Median and variance of SUVmax for lateral lymph nodes positive [median, variance]/ negative [median, variance]

[1.9, 17.7 / 0.91, 0.24]

Pathological stage

0/I/II/III/IV

6/22/20/22/14

Primary tumor SUVmax

14.2 ± 6.89

LLN SUVmax

1.4 ± 1.70

  1. LLN lateral pelvic lymph node, PET positron emission tomography, SUVmax maximum standardized uptake value; 263, internal iliac region; 273, common iliac region; 283, obturator region; 293, external iliac region