Table 2 Relative risk (rate ratio) of a second cancer of selected sites among thrombosis cancer patients and control cancer patients during 2–23 years of follow-up

From: The risk of a second cancer after hospitalisation for venous thromboembolism

 

VTE cancer cohort, N =3339

Control cancer cohort, N =21 713

 

Sites of second cancer (ICD-7 code) a

No. of events

No./1000 person-year

No. of events

No./1000 person-year

Relative risk (95% CI)

All

238

18.2

1610

15.8

1.1 (1.0–1.3)

Oesophagus (150)

4

0.3

22

0.2

1.4 (0.5–4.0)

Colon, rectum (153, 154)

47

3.6

254

2.5

1.4 (1.1–2.0)

Liver, primary, gall bladder, pancreas (155.0, 155.1, 157)

11

0.8

89

0.9

0.9 (0.5–1.8)

Lung, primary (162)

30

2.3

276

2.7

0.8 (0.6–1.2)

Breast (170)

29

2.2

181

1.8

1.3 (0.9–1.9)

Ovary (175)

3

0.2

33

0.3

0.7 (0.2–2.3)

Prostate (177)

30

2.3

121

1.2

1.8 (1.2–2.7)

Kidney, bladder (180, 181)

22

1.7

194

1.9

0.9 (0.6–1.3)

Lymphatic and haematological (200–205)

18

1.4

129

1.3

1.1 (0.7–1.8)

  1. VTE=venous thromboembolism; CI=confidence interval.
  2. aModified version of the 7th International Classification of Diseases.