Is brain cancer mortality increasing in industrial countries?

Area of Science:

• Neurology
• Oncology
• Epidemiology

Background:

• Brain and central nervous system (CNS) cancers represent a significant public health concern.
• Understanding mortality trends and influencing factors is crucial for effective healthcare planning.

Purpose of the Study:

• To analyze age-specific mortality trends for brain and CNS cancers in major industrial countries from 1968-1987.
• To examine the impact of diagnostic technology changes on these mortality trends using U.S. SEER data (1973-1987).

Main Methods:

• Age-specific mortality data analysis across multiple countries.
• Examination of diagnostic confirmation rates and technology use in the U.S. National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) program.
• Correlation analysis between diagnostic trends and incidence/mortality rates.

Main Results:

• Drastic increases in mortality observed in individuals aged 75-84, with consistent rises in younger groups in most countries.
• U.S. mortality declined by 2% annually in the 0-24 age group.
• Significant annual incidence increases for brain cancer in the U.S. SEER program: 2% (0-44), 1% (65-74), and 5% (75-84).
• High diagnostic confirmation rates (>96%) with increased radiographic testing in older populations.

Conclusions:

• Increasing brain and CNS cancer mortality trends are observed across major industrial nations, affecting both males and females.
• Changes in diagnostic practices alone are unlikely to fully account for the observed increases.
• Further research is needed to identify preventable causes and inform healthcare strategies.