Table 1 Primary lung neoplasms and specimen types used in this study

From: Insulinoma-associated protein 1 (INSM1) is a sensitive and highly specific marker of neuroendocrine differentiation in primary lung neoplasms: an immunohistochemical study of 345 cases, including 292 whole-tissue sections

 

No. of cases

Whole-tissue sections of resected tumor (%)

Small biopsies (%)

Tissue microarray (%)

Small cell lung carcinoma

64

32 (50)

32 (50)

0 (0)

Large cell neuroendocrine carcinoma

24

24 (100)

0 (0)

0 (0)

Typical carcinoid tumor

48

42 (88)

4 (8)

2 (4)

Atypical carcinoid tumor

16

16 (100)

0 (0)

0 (0)

Neuroendocrine

152

114 (75)

36 (24)

2 (1)

Adenocarcinoma

130

123 (95)

0 (0)

7 (5)

Squamous cell carcinoma

33

27 (82)

0 (0)

6 (18)

Large cell carcinoma

4

4 (100)

0 (0)

0 (0)

Sarcomatoid carcinoma

8

8 (100)

0 (0)

0 (0)

Adenosquamous carcinoma

3

3 (100)

0 (0)

0 (0)

Adenoid cystic carcinoma

7

7 (100)

0 (0)

0 (0)

Mucoepidermoid carcinoma

5

5 (100)

0 (0)

0 (0)

Epithelial-myoepithelial carcinoma

1

0 (0)

1 (100)

0 (0)

Sclerosing pneumocytoma

1

0 (0)

1 (100)

0 (0)

Hamartoma

1

1 (100)

0 (0)

0 (0)

Non-neuroendocrine

193

178 (92)

2 (1)

13 (7)

Total

345

292 (85)

38 (11)

15 (4)