The Spanish Society of Medical Oncology (SEOM) estimates that 38,318 women in will be diagnosed with breast cancer by 2026. Over 6,600 deaths are expected, including nearly 100 men, though the five-year survival rate remains high at up to 87 per cent.
Approximately 3,000 cases annually involve women under 40, a demographic where incidence rises globally by 0.5 per cent each year. While rare under 30, cases peak between 35 and 40. The has now lowered the screening age to 45 years.
Diagnosis during or after pregnancy carries a worse prognosis, particularly as Spain has one of 's oldest average ages for first pregnancies. Research by oncologist María Vidal notes that cancers in younger women often exhibit more aggressive biology.