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Table 1 Characteristics of the patients and tumors included in this study

From: Retention index of FDG-PET/CT SUVmax of the primary tumor in non-small cell lung cancer as a predictor of lymph node metastasis: a retrospective study

Characteristics

N (%)

Sex

 Male

139 (64.0%)

 Female

78 (35.9%)

Lobe

 RU

67 (30.7%)

 RM

13 (6.0%)

 RL

51 (23.4%)

 LU

41 (18.8%)

 LL

46 (21.1%)

Histological type

 Adenocarcinoma

145 (66.5%)

 Squamous

53 (24.3%)

 Other

20 (9.2%)

cN

 0

187 (85.8%)

 1

26 (11.9%)

 2

5 (2.3%)

pN

 0

174 (79.8%)

 1

27 (12.4%)

 2

17 (7.8%)

pN

 0

174 (79.8%)

 1 or 2

44 (20.2%)

Age, years

69.6 ± 9.5

SUVmaxe

3.3 [1.73, 6.58]

SUVmaxd

4.2 [2.0, 8.68]

RI

0.25 [0.08, 0.37]

pT (mm)

22.0 [15.8, 30.0]

  1. n = 218 for all characteristics, except sex (n = 217). Data are presented as n (%), mean ± standard deviations, or median [interquartile ranges]
  2. pN pathological lymph node metastasis, RU right upper lung lobe, RL right lower lung lobe, RM right middle lung lobe, LU left upper lung lobe, LL left lower lung lobe, SUVmaxe early maximum standardized uptake value, SUVmaxd delayed maximum standardized uptake value, RI retention index, pT pathological tumor size