More than 300,000 new cases expected – significant regional differences
The number of cancer cases in Spain continues to rise. According to current estimates by the Spanish Society of Medical Oncology (SEOM), more than 300,000 new cancer diagnoses are expected nationwide in 2026. This represents an increase of around 1.95 percent compared with the previous year.
Spain Press Editorial Team
by Marlon Gallego Bosbach
The figures are based on estimates and projections for 2026 and may still undergo slight adjustments as the year progresses. The data are drawn from the latest SEOM report, “Las cifras del cáncer en España 2026”, produced in collaboration with the Spanish cancer registry REDECAN.
Ageing population identified as key factor
According to oncologists, the rise in cancer cases is primarily due to demographic trends. The ageing population is considered one of the main factors, as the risk of cancer increases significantly with age. In addition, moderate population growth, along with improved diagnostics and early detection, has led to a higher number of identified cases.
Despite the increasing number of diagnoses, the overall medical outlook remains positive. Five-year survival rates in Spain have risen steadily over recent decades. Notable improvements have been achieved particularly in breast, colorectal and prostate cancers, thanks to early diagnosis and advances in modern therapies.
Regional differences in incidence and mortality
Significant differences can be observed among Spain’s autonomous communities. Asturias is particularly notable, ranking among the regions with the highest cancer incidence and mortality. Galicia and Castile and León also exceed the national average.
In contrast, several southern regions show lower rates. Experts attribute these differences, among other factors, to variations in age structure, lifestyle habits, socioeconomic conditions, as well as environmental and occupational exposures.
Most common cancer types in 2026
According to SEOM’s projections, the following types of tumours are expected to be diagnosed most frequently this year:
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Colorectal cancer (colon and rectum): around 44,000 new cases
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Breast cancer: approximately 38,000 cases
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Lung cancer: around 35,000 cases
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Prostate cancer: just under 35,000 cases
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Bladder cancer: approximately 24,000 cases
In addition, lymphomas, pancreatic cancer, kidney cancer, melanomas, as well as tumours of the mouth and throat, continue to play a significant role in the disease burden.
Differences between men and women
Cancer prevalence differs significantly by gender.
In men, prostate, colorectal, lung, and bladder cancer are among the most common diagnoses.
In women, breast cancer remains by far the most common type of cancer, followed by colorectal and lung cancer.
SEOM is also paying particular attention to younger age groups: around 8,000 new cases are expected among 20- to 39-year-olds. This trend has been observed for several years and is the subject of intensive research.
Risk factors remain relevant
In addition to demographic changes, professional societies identify other causes for the rising numbers, including in particular:
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Tobacco consumption, still the leading cause of lung cancer
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Alcohol consumption
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Overweight and physical inactivity
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Unhealthy diets
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Environmental and pollutant exposure
At the same time, experts emphasise that prevention strategies and early detection programmes can make a crucial contribution to reducing cancer mortality.
Improved outlook despite rising case numbers
Despite the increasing number of diagnoses, the overall medical outlook is positive. The five-year survival rate in Spain has steadily increased over the past decades. Significant improvements have been achieved, particularly for breast, colorectal, and prostate cancers, through early diagnosis and modern therapies.
SEOM underlines that further investment in prevention, screening and oncology care will be essential in order to limit the long-term burden of cancer.
