Brain & other nervous system cancer: facts & figures
|Incidence in Minnesota:|
The incidence of brain cancer in Minnesota has been stable since 1988. Unlike other state or regional cancer registries, from 1988 to 2011 the Minnesota Cancer Reporting System (MCRS) only counted cancers that were microscopically confirmed. National data indicates that about 10% of brain cancers are diagnosed without tissue confirmation. For 1988-2011, rates in Minnesota may not be comparable to rates in other states that included brain cancers diagnosed without tissue confirmation. Starting in 2012, MCRS began collecting data on cancers clinically diagnosed via medical procedures such as radiography that use tools like CT scans or MRI.
From 2014 to 2016, an average of 245 new cases of brain cancer in males and 192 new cases in females were diagnosed in Minnesota residents each year.
Brain & other nervous system cancer cases in Minnesota
The rate of brain cancer is about 30% higher among males than females. Most recently, the age-adjusted incidence rate of brain cancer was 8.0 new cases per 100,000 males and 6.6 new cases per 100,000 females. The increase in 2012 is partly due to the collection of clinically-diagnosed cancers beginning in that year.
Brain & other nervous system cancer cases in Minnesota, by age
The rate of brain cancer is highest among males between the ages of 70 and 84 years.
What is brain and other nervous system cancer?
Brain cancer is the growth of abnormal cells in the tissues of the brain and the central nervous system. Other types of cancer can spread to the brain from a different part of the body. It is not considered brain cancer when the origin of the cancer is in a different organ.
What are the risk factors for brain cancer?
Ionizing radiation is the only well-established environmental risk factor for brain cancer. Certain types of ionizing radiation are used in medical tests such as x-rays. This is unlike non-ionizing radiation produced by cell phones. Because the brain is composed of many specialized cells, more than 120 different types of brain cancer can be classified. This diversity makes brain cancer difficult to study.
How can brain cancer be prevented?
No proven strategies exist to prevent brain and other nervous system cancer. Similar to the prevention of many types of cancer, it is important to avoid unnecessary exposure to radiation.
Last updated May 2019. Updates are made when data become available.