Table 1 Expression of markers in lung tumours

From: Aspartic proteinase napsin is a useful marker for diagnosis of primary lung adenocarcinoma

 

Napsin

Sp-A

Sp-B

TTF-1

Total

Adenocarcinoma

33

24

24

33

39

Large cell carcinoma

2

3

1

6

11

Squamous cell carcinoma

0

4

5

4

31

Small cell carcinoma

0

0

1

12

15

Carcinoid

0

0

0

3

6

Metastatic tumoura

1 (renal cell carcinoma)

1 (salivary gland)

2 (salivary gland, midline germ cell embr. carcinoma)

0

16

Sensitivityb (%)

84.6

61.5

61.5

84.6

 

Specificityb (%)

94.3

77.4

80.0

76.7

 
  1. aBrackets show the origins of metastatic tumours.
  2. bSensitivity and specificity for adenocarcinoma among nonsmall cell lung cancer (adenocarcinoma, large cell carcinoma and squamous cell carcinoma).
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