Medulloblastoma - Childhood: Risk Factors

Approved by the Cancer.Net Editorial Board, 08/2017

ON THIS PAGE: You will find out more about the factors that increase the chance of developing medulloblastoma. Use the menu to see other pages.

A risk factor is anything that increases a person’s chance of developing a tumor. Although risk factors often influence the development of a tumor, most do not directly cause a tumor. Some people with several risk factors never develop a tumor, while others with no known risk factors do.

Doctors are gradually understanding what causes most childhood tumors, including medulloblastoma. The following factors are linked with a higher risk of medulloblastoma:

  • Gender. Medulloblastoma is more common in boys than in girls.

  • Age. Medulloblastoma occurs most often in the first 8 years of life, with about half occurring in children younger than 6 years old.

  • Genetics. The following genetic conditions are associated with a higher risk of developing medulloblastoma:

The next section in this guide is Symptoms and Signs. It explains what body changes or medical problems this disease can cause. You may use the menu to choose a different section to read in this guide.