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Table 5 Categories of 18 F-FDG PET/CT combined with ultrasonography for indications of ALND/PSC

From: Utility of 18F-fluoro-deoxyglucose emission tomography/computed tomography fusion imaging (18F-FDG PET/CT) in combination with ultrasonography for axillary staging in primary breast cancer

Category

1

2

3

4

AUS

-

-

+

+

18F-FDG-uptake

-

+

-

+

No. of involved ALNs

    

0

117 (85)

6 (50)

1 (20)

0 (0)

1

12 (9)

5 (42)

2 (40)

9 (32)

2 Involved ALNs 5

6 (4)

1 (8)

1 (20)

9 (32)

6

3 (2)

0 (0)

1 (20)

10 (36)

The maximum size of involved ALNs

    

5 mm

10(48)

5 (83)

0 (0)

0 (0)

5 mm < metastasis < 10 mm

7(33)

1 (17)

2 (50)

6 (21)

10 mm

4(19)

0 (0)

2 (50)

22(79)

Nuclear grade of involved ALNs

    

Grade 1 and 2

16(76)

3 (50)

4 (100)

13(46)

Grade 3

5(24)

3 (50)

0 (0)

15(54)

Frequency of involved ALNs

15%

50%

80%

100%

Indications of ALND/PSC

SNB

FNAC/Bx is needed

FNAC/Bx is needed

Acceptable

Total

138 (100)

12 (100)

5 (100)

28 (100)

  1. AUS, Axillary ultrasound; ALN, Axillary lymph node; ALND, ALN dissection; PSC, Primary systemic chemotherapy; No., Number; pts, patients; FNAC, Fine needle aspiration