Thymoma and Thymic Carcinoma: Statistics

Approved by the Cancer.Net Editorial Board, 01/2019

ON THIS PAGE: You will find information about the number of people who are diagnosed with thymoma and thymic carcinoma each year. You will also read general information on surviving these diseases. Remember, survival rates depend on several factors. Use the menu to see other pages.

Most tumors that begin in the thymus are thymoma, but overall, thymoma is uncommon. Less than 1 person per 1.5 million people develops 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 carcinoma is very rare, accounting for less than 1% of all tumors in the thymus.

Thymoma and thymic carcinoma 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 for people with thymoma and thymic carcinoma are an estimate. The estimate comes from data based on the number of people with these cancers in the United States. Talk with your doctor if you have any questions about this information. Learn more about understanding statistics.

Statistics adapted from the American Cancer Society and the National Cancer Institute (January 2019).

The next section in this guide is Risk Factors. It explains what factors may increase the chance of developing thymoma or thymic carcinoma. Use the menu to choose a different section to read in this guide.