Breast Cancer, Cervical, and Ovarian Cancer Inequalities Analysis
Summary of Research on Global Cancer Care Pathways (VENUSCANCER Project)
This research, published in The Lancet by Allemani et al. as part of the VENUSCANCER project (within the CONCORD program), provides a global overview of cancer care pathways for breast, cervical, and ovarian cancers. The study analyzed data from over 275,000 women across 39 countries, focusing on stage at diagnosis and consistency of treatment with international guidelines.
Key Findings:
* Early Diagnosis Disparities: Women in high-income countries are substantially more likely to be diagnosed with early-stage breast or cervical cancer (over 1 in 3) compared to those in low- and middle-income countries (1 in 5). Early-stage diagnosis for ovarian cancer is generally low globally (under 20%), and worse in low- and middle-income countries.
* Surgery Access: Surgery is generally offered for early-stage cancer, but access varies. 78% of women in high-income countries receive surgery compared to 56% in low- and middle-income countries.
* Treatment Consistency: Non-surgical treatments (chemotherapy, hormonal therapy) are more consistently aligned with international guidelines than surgical approaches.
* Breast Cancer Treatment Variations: While breast-conserving surgery plus radiotherapy is common in europe (67-78%), rates are lower in Canada (60%) and the US (53%). Mastectomy is more prevalent in low- and middle-income countries (30-70%) but also common in the US, Canada, and some European nations.
* Advanced Disease Prevalence: Metastatic breast cancer is more frequent in low- and middle-income countries (2-44%) compared to high-income countries (under 10%). Advanced cervical cancer rates are generally lower (under 15%) worldwide.
* Factors Influencing Treatment Choices: Patient decisions are influenced by socioeconomic factors, education, access to facilities, distance to treatment, fear of recurrence, and insurance coverage. Lack of radiotherapy facilities and trained surgeons contribute to higher mastectomy rates in low- and middle-income countries. Cultural beliefs (e.g., preference for mastectomy in Thailand) and insurance policies (e.g., radiotherapy coverage in the US) also play a role.
the study highlights critically important disparities in cancer care globally, with women in low- and middle-income countries facing later diagnoses and potentially less consistent treatment with international guidelines. This impacts survival rates and underscores the need for initiatives to improve cancer control worldwide.