Table 2 IHC staining characteristics of ADC and SqCC tumors

Patients, n

627

100

543

100

  Positivity

548

87

6

1

  Negativity

79

13

537

99

  Positivity

8

1

511

94

  Negativity

619

99

32

6

 Overall^a

110

18

80

15

 Synaptophysin

84

13

20

4

 Chromogranin A

16

3

4

1

 CD56

41

7

3

1

 Synaptophysin / Chromogranin A

12

2

1

0

 Synaptophysin / CD56

19

3

4

1

 Chromogranin A / CD56

10

2

2

0

 Synaptophysin / Chromogranin A / CD56

10

2

0

0