Thymoma: Statistics

Approved by the Cancer.Net Editorial Board, 05/2016

ON THIS PAGE: You will find information about how many people are diagnosed with this type of cancer each year. You will also learn some general information on surviving the disease. Remember, survival rates depend on several factors. To see other pages, use the menu.

Most tumors that begin in the thymus are thymoma. This is an uncommon cancer. Less than 1 person per 1.5 million people develop thymoma. This means about 400 people per year develop thymoma. However, the exact number is not known and may be increasing with the use of computed tomography (CT) scans (see Diagnosis). Thymic carcinomas make up less than 25% of tumors that start in the thymus.

Thymoma usually occurs in people between the ages of 40 and 60, but can occur at almost any age. Survival rates are different depending on several factors, including the stage and classification of thymoma (see Stages).

It is important to remember that statistics on how many people are diagnosed with this type of cancer are an estimate. The estimate comes from data based on people with this cancer in the United States each year. So, your own risk may be different. Doctors cannot say for sure how long anyone will live with thymoma. Learn more about understanding statistics.

Sources: American Cancer Society and the National Cancer Institute.

The next section in this guide is Risk Factors. It explains what factors may increase the chance of developing this disease. Or, use the menu to continue reading this guide.