British Columbia Female Cancer Screening Guidelines
Breast Cancer Screening
Women in British Columbia should begin annual mammography screening at age 40 and continue annually through age 54, then transition to biennial screening at age 55 and older, continuing as long as they are in good health with a life expectancy of at least 10 years. 1, 2
Age-Specific Recommendations:
Ages 20-39:
- Clinical breast examination (CBE) every 3 years during periodic health examinations 3, 1
- Breast self-examination (BSE) is optional - women should be informed about benefits and limitations; if choosing to perform BSE, they should receive instruction and periodic technique review 3, 1
- Emphasis on prompt reporting of any new breast symptoms to healthcare providers
Ages 40-44:
- Women should have the opportunity to begin annual screening mammography 1, 2
- Annual clinical breast examination, ideally performed before mammography 3, 1
Ages 45-54:
Ages 55 and older:
- Transition to biennial (every 2 years) mammography, or continue annual screening based on individual preference 1, 2
- Continue screening as long as overall health is good and life expectancy exceeds 10 years 1, 2
High-Risk Women:
Women at high risk (>20% lifetime risk, BRCA1/2 carriers, history of chest radiation before age 30, or strong family history) require more intensive screening starting at younger ages, typically including annual MRI in addition to mammography 4, 5. In BC, approximately 3.5% of screening-age women are considered high-risk 5.
Cervical Cancer Screening
Cervical cancer screening should begin at age 21 (or 3 years after initiating sexual activity, whichever comes first) and continue with specific intervals based on age and test type. 1, 6
Age-Specific Protocols:
Ages 21-29:
- Pap test every 3 years (conventional or liquid-based) 1, 6
- HPV testing is NOT recommended in this age group
Ages 30-65:
- Preferred: Co-testing with Pap test AND HPV DNA test every 5 years 1, 6
- Acceptable alternative: Pap test alone every 3 years 1, 6
Age 65 and older:
- May discontinue screening if: 1, 6
- Had 3 consecutive negative Pap tests, OR
- 2 consecutive negative HPV and Pap co-tests within the last 10 years
- Most recent test occurred within the last 5 years
- No history of CIN2 or more severe diagnosis in past 20 years
Special Circumstances:
- Post-hysterectomy (total): Discontinue screening if no history of high-grade precancerous lesions or cervical cancer 1, 6
- Subtotal hysterectomy: Continue routine screening 6
- History of CIN2 or worse: Continue screening for at least 20 years, even beyond age 65 6
Colorectal Cancer Screening
All average-risk adults should begin colorectal cancer screening at age 45 and continue through age 75. 1
Screening Options (choose one):
Stool-Based Tests:
- Annual fecal immunochemical test (FIT), OR
- Annual high-sensitivity guaiac-based fecal occult blood test (gFOBT), OR
- Multi-target stool DNA test every 3 years 1
Structural Examinations:
- Colonoscopy every 10 years, OR
- CT colonography every 5 years, OR
- Flexible sigmoidoscopy every 5 years 1
Age-Specific Guidance:
Ages 45-75:
- Regular screening with patient's preferred method from above options 1
- All positive non-colonoscopy tests require timely follow-up colonoscopy 1
Ages 76-85:
- Individualize decisions based on life expectancy, health status, comorbidities, and prior screening history 1
- If continuing, offer same options as younger adults
Age 85 and older:
- Discourage continued screening 1
Critical Caveat:
Single-panel FOBT collected during digital rectal examination in the office is NOT adequate for screening and should not be used 6. Proper at-home collection of 2 samples from 3 consecutive bowel movements is required 6.
Endometrial Cancer
At menopause, women should be informed about endometrial cancer risks and symptoms, with strong encouragement to report any unexpected bleeding or spotting promptly. 1 This is counseling rather than active screening, as no routine screening test is recommended for average-risk women.
Key BC-Specific Context:
British Columbia operates organized provincial screening programs, including the Screening Mammography Program of British Columbia (SMPBC), which has demonstrated success in early detection with 81% of invasive cancers having no lymph node metastases 7. The province has maintained approximately 85% screening coverage for cervical cancer since 1970, contributing to a 78% reduction in invasive cervical cancer incidence 8. Women in BC with organized screening access for ages 40-49 show earlier stage at diagnosis compared to jurisdictions without such programs 9.