Table 3. Cancer risk following organ transplantation in Sweden 1970–1997.

Cancer site (ICD-7)	Observed no. cases	SIR	95% CI
Non-kidney transplants SIR for selected sites
Lip (140)	1	24.8	0.6–138.6
Stomach (151)	3	12.0	2.4–35.0
Colon (153)	0	0	0.0–5.8
Rectal (154)	2	4.5	0.5–16.2
Kidney (180)	0	0	0.0–11.2
Nonmelanoma skin cancer (191)	11	34.0	17.0–60.6
Non-Hodgkin's lymphoma (200, 204, 204.1)	18	37.3	22.1–59.1
All cancers	53	4.94	3.7–6.4
Kidney transplants SIR for selected sites
Lip (140)	39	54.8	39.0–74.9
Stomach (151)	9	1.8	0.8–3.4
Colon (153)	25	2.4	1.5–3.5
Rectal (154)	12	1.7	0.9–3.0
Kidney (180)	28	5.2	3.4–7.5
Nonmelanoma skin cancer (191)	267	57.7	51.0–65.1
Non-Hodgkin's lymphoma (200, 204, 204.1)	27	3.8	2.5–5.6
All cancers	639	3.9	3.6–4.2

Observed number of cases, SIR (SIR) and 95% confidence intervals (CI) by cancer site, type and transplanted organ.