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Table 3 Clinical, histopathological and metabolic features of NF-PNETs

From: Prediction of the aggressiveness of non-functional pancreatic neuroendocrine tumors based on the dual-tracer PET/CT

 

18F-FDG-positive SUVmax range 3.0–8.6

18F-FDG-negative SUVmax range 0.8–3.2

P

68Ga-DOTANOC-positive SUVmax range 8.7–104.7

68Ga-DOTANOC-negative SUVmax 4.4

P

Sex

  

1.000

  

1.000

 Male

7/11 (64)

13/20 (65)

 

19/30

1/1

 

 Female

4/11 (36)

7/20 (35)

 

11/30

0/1

 

Age, years

67 (38–78)

68 (50–71)

1.000

66 (47–72)

70

0.903

Primary tumor size, mm

33 (23–90)

20 (13–30)

0.023

24 (14-38)

33

0.581

Asymptomatic

8/11 (73)

20/20 (100)

0.037

27/30

1/1

1.000

CgA

  

0.258

  

0.516

 Strongly positive

2/11 (18)

1/20 (5)

 

3/30

0/1

 

 Weakly positive

6/11 (55)

9/20 (45)

 

15/30

0/1

 

 Negative

3/11 (27)

11/20 (50)

 

12/30

1/1

 

Location

  

0.630

  

1.000

 Head

6/11 (55)

6/20 (30)

 

11/30

1/1

 

 Body

0/11 (0)

2/20 (10)

 

2/30

0/1

 

 Tail

3/11 (27)

7/20 (35)

 

10/30

0/1

 

 Multifocal

2/11 (18)

5/20 (25)

 

7/30

0/1

 

Grade*

  

0.023

  

1.000

 G1

3/9 (33)

13/16 (81)

 

15/24

1/1

 

 G2

5/9 (56)

3/16 (19)

 

8/24

0/1

 

 G3

1/9 (11)

0/16 (0)

 

1/24

0/1

 

Ki-67

4.0 (1.5–11.0)

2.0 (1.0–2.5)

0.051

2.0 (1.0–4.5)

1.0

0.384

68Ga-DOTANOC-positive

10/11 (91%)

20/20 (100%)

0.355

   

18FDG-positive

   

10/30 (33%)

1/1 (100%)

0.355

LN+

2/8 (33)

4/11 (36)

1.000

5/30

1/1

0.316

  1. Categorical variables are expressed as n (%) and continuous variables are reported as median values (IQR)
  2. Abbreviations: CgA, circulating chromogranin A, Strongly positive indicates S-CgA = 13.5 nmol/L or P-CgA 9–37 nmol/L, weakly positive indicates S-CgA 2.2–4.7 nmol/L or P-CgA 3.0–4.8 nmol/L and negative indicates S-CgA < 2.1 nmol/L or P-CgA < 3.0 nmol/L; LN+, lymph node metastases
  3. *Lesion analysis (histologically confirmed, n = 25)
  4. Follow-up patients, biopsied patients and one patient who underwent enucleation were excluded because it was not possible to assess their LN+