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Table 1 Patient characteristics

From: Accuracy of F-18 FDG PET/CT with optimal cut-offs of maximum standardized uptake value according to size for diagnosis of regional lymph node metastasis in patients with rectal cancer

Characteristicsa

Overall

(n = 176)

Groupb

Small LNc

(n = 118)

Large LN

(n = 58)

Age, years

66.7 (10.4)

67.4 (9.3)

65.3 (12.4)

Male, %

56.8

61

48.3

AJCCd Stage, n

 I

69

59

10

 II

38

27

11

 III

69

32

37

 IV

0

0

0

LN diameter, mm

6.2 (3.0)

4.6 (1.7)

9.4 (2.5)

SUVmax of LN

1.8 (2.2)

1.2 (0.7)

3.2 (3.2)

PET/CT scanner, n

 Discovery STE-16

79

54

25

 Biograph mCT-64

97

64

33

 T stage, n

 T1–2

81

68

13

 T3–4

95

50

45

SUVmax of primary tumor, n

 High SUVmax (<  13.0)

84

64

20

 Low SUVmax (>  13.0)

92

54

38

  1. aAll values are presented as means (SD)
  2. bPatients were categorized by the long-axis diameter of the regional LN, as follows: small LN, ≤ 7 mm; large LN, > 7 mm
  3. cLN lymph node
  4. dAJCC American Joint Committee on Cancer