What are the risk factors for thymoma and thymic tumors?Age. Thymic cancer is rare in children and young adults, more common in middle-aged adults, and most common in those in their 70s.
Ethnicity. In the US, thymic cancer is most common in Asians and Pacific Islanders and least common in whites and Latinos. It is more common in African Americans than in whites.
Because the only known risk factors are age and ethnicity, there is no known way to prevent thymic cancer.