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Primary Cancer site among Patients with a Secondary Breast Cancer
| Primary cancer site | N (%) |
|---|---|
|
| |
| Oral cavity and pharynx | 9 (0.78) |
| Gastrointestinal tract | < 5 |
| Bones and soft tissue | 7 (0.61) |
| Breast | 927 (80.82) |
| Female genital system | 25 (2.18) |
| Eye and orbit | < 5 |
| Brain and nervous system | 14 (1.22) |
| Endocrine (including thyroid) | 77 (6.71) |
| Hematologic malignancies | 82 (7.15) |
| Other | < 5 |
