Table 1 Previous CT imaging findings in patients with ALK-positive lung cancer

Number of ALK+ lung cancer

36 %

28 %

28 %

With GGN

1 (2.8)

1 (3.6)

1 (20.0)

Spiculation

N/A

N/A

1 (20.0)

Notch

N/A

N/A

N/A

Air bronchogram

N/A

N/A

4 (80.0)

Pleural indentation

N/A

N/A

2 (40.0)

Pleural effusion

15 (41.7)

N/A

N/A

Intrapulmonary metastasis

N/A

N/A

N/A

Lymphadenopathy

31 (86.1)

N/A

N/A

Extended lymph node invasion

7 (19.4)

N/A

N/A

Lymphangitis

3 (8.3)

N/A

N/A