Relative Risks of Mortality Due to Selected Cancers by Modality of Treatment
| X ray | Brachytherapy | Both | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cause of death | na | RRb | 95% CIc | na | RRb | 95% CIc | na | RRb | 95% CIc |
| Number of women: | 1,947 | 5,981 | 1,841 | ||||||
| Person-years: | 59,096 | 175,086 | 54,408 | ||||||
| All causes | 1,342 | 1.1 | 1.0–1.2 | 4,391 | 1.1 | 1.1–1.2 | 1,429 | 1.1 | 1.0–1.1 |
| All solid cancers | 253 | 1.3 | 1.1–1.5 | 853 | 1.3 | 1.2–1.5 | 289 | 1.4 | 1.2–1.6 |
| Heavily-irradiated sites (>1 Gy) | 125 | 1.9 | 1.5–2.5 | 410 | 1.9 | 1.5–2.3 | 155 | 2.0 | 1.6–2.6 |
| Uterine cervix | 12 | 1.3 | 0.6–2.9 | 35 | 1.1 | 0.6–2.1 | 18 | 1.4 | 0.7–3.0 |
| Uterine corpus | 30 | 3.2 | 1.8–6.1 | 129 | 3.7 | 2.2–6.6 | 58 | 4.1 | 2.4–7.6 |
| Bladder | 9 | 3.3 | 1.1–10.7 | 32 | 3.5 | 1.5–10.2 | 7 | 2.1 | 0.7–7.3 |
| Rectum | 10 | 4.3 | 1.4–15.6 | 27 | 3.7 | 1.4–12.6 | 14 | 5.9 | 2.0–21.3 |
| Ovary | 24 | 2.1 | 1.1–3.7 | 53 | 1.5 | 0.9–2.6 | 28 | 2.6 | 1.4–4.7 |
| Other genital organs | 1 | 0.3 | 0.0–1.8 | 5 | 0.5 | 0.1–1.6 | 4 | 1.2 | 0.3–4.5 |
| Colon | 40 | 1.4 | 0.9–2.2 | 134 | 1.5 | 1.1–2.2 | 30 | 1.1 | 0.7–1.7 |
| Lightly-irradiated sites (0.1–1 Gy) | |||||||||
| Liver, gallbladder and bile ducts | 4 | 0.5 | 0.1–1.4 | 23 | 0.9 | 0.4–1.7 | 15 | 1.6 | 0.7–3.4 |
| Stomach | 13 | 1.1 | 0.6–2.3 | 40 | 1.0 | 0.6–1.8 | 15 | 1.0 | 0.5–2.1 |
| Kidney | 6 | 1.1 | 0.4–3.2 | 13 | 0.7 | 0.3–1.8 | 5 | 0.8 | 0.2–2.4 |
| Pancreas | 10 | 0.8 | 0.3–1.5 | 52 | 1.3 | 0.8–2.2 | 12 | 1.1 | 0.5–2.1 |
| Very lightly-irradiated sites (<0.1 Gy) |
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| Lung | 20 | 1.1 | 0.6–1.8 | 49 | 1.0 | 0.7–1.6 | 15 | 1.2 | 0.6–2.3 |
| Breast | 39 | 0.9 | 0.6–1.4 | 127 | 1.0 | 0.8–1.4 | 28 | 0.7 | 0.5–1.2 |
| Esophagus | 0 | 0.0 | —d | 6 | —e | 4 | —e | ||
| Thyroid | 1 | 0.8 | 0.0–8.7 | 2 | 0.5 | 0.1–4.5 | 2 | 1.5 | 0.2–14.6 |
| Buccal cavity and pharynx | 3 | 1.3 | 0.3–6.0 | 6 | 0.8 | 0.2–3.4 | 2 | 0.9 | 0.1–4.9 |
| Brain | 4 | —e | 13 | —e | 3 | —e | |||
| Bone and connective tissue cancers | |||||||||
| Bone | 4 | —e | 0 | 0.0 | —d | 0 | 0.0 | —d | |
| Connective tissues | 1 | —e | 2 | —e | 3 | —e | |||
| Lymphatic/Hematopoietic cancers |
|||||||||
| Non-Hodgkin lymphoma | 11 | 1.0 | 0.5–2.1 | 29 | 0.9 | 0.5–1.6 | 8 | 0.8 | 0.3–1.8 |
| Hodgkin lymphoma | 2 | 0.8 | 0.1–4.1 | 7 | 0.9 | 0.3–3.4 | 0 | 0.0– | |
| Multiple myeloma | 4 | 0.9 | 0.3–3.0 | 10 | 0.8 | 0.3–2.1 | 4 | 1.1 | 0.3–3.4 |
| Leukemia | 9 | 1.6 | 0.6–3.9 | 47 | 2.6 | 1.4–5.5 | 14 | 2.4 | 1.1–5.6 |
| Non-CLLf leukemia | 5 | —e | 35 | —e | 11 | —e | |||
| Myeloid leukemia | 3 | —e | 19 | —e | 6 | —e | |||
| Lymphocytic leukemia | 4 | 1.0 | 0.3–3.5 | 12 | 0.9 | 0.4–2.4 | 3 | 0.7 | 0.2–2.7 |
a
Number of deaths.
b
Relative risk.
c
95% confidence interval (relative risks and 95% confidence intervals for Lymphatic/Hematopoietic cancers were calculated based on standardized mortality rate regression).
d
Not applicable.
e
Relative risk and 95% confidence intervals were not presented due to small number of deaths among no RT group.
f
Chronic lymphocytic leukemia.