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Table 2 Basic and clinical characteristics of the patients in present study (n = 23)

From: Stereotactic body radiation therapy for post-pulmonary lobectomy isolated lung metastasis of thoracic tumor: survival and side effects

Characteristics

Number of patients (%)

Age (years)

 

  Median (range)

58 (45–74)

Gender

 

  Male/Female

17 (73.9)/6 (26.1)

ECOG a performance status

 

  0-1

21 (91.3)

  2

2 (8.7)

Pathology of the primary tumor

 

  Squamous-cell lung cancer

10 (43.5)

  Non-squamous cell lung cancer

10 (43.5)

  Sarcomatoid carcinoma

2 (8.7)

  Small cell lung cancer

1 (4.3)

Surgical method

 

Right upper lung lobectomy

9 (39.1)

Right lower lung lobectomy

3 (13.0)

Left upper lung lobectomy

5 (21.7)

Left lower lung lobectomy

4 (17.4)

Left pneumonectomy

2 (8.7)

T staging after surgery b

 

  T1/T2/T3/T4

3 (13.0)/11 (47.8)/8 (34.8)/1(4.3)

N staging after surgery b

 

  N0/N1/N2

10 (43.5)/6 (26.1)/7 (30.4)

Tumor stage after surgery b

 

  I

6 (26.1)

  II

9 (39.1)

  III

8 (34.8)

Time from surgery to lung metastasis (months)

 

Median (range)

16.0 (4.0-75.0)

Sites of lung metastasis

 

Contralateral lung of the primary tumor

12 (52.2)

Ipsilateral lung of the primary tumor

11 (47.8)

Follow-up time since diagnosis of lung metastasis (months)

 

Median (range)

14.0 (6.0-47.0)

  1. a: Eastern Cooperative Oncology Group; b: staging system, 6th edition, American Joint Committee on Cancer, 2002.