The thymus is a small organ in your upper chest, under your breastbone. Before birth and during childhood, the thymus helps the body make a type of white blood cell. These cells help protect you from infections.

NIH: National Cancer Institute

Source: MedLinePlus (NIH)1

Anatomical Information about Thymus

The thymus is a small organ that lies in the upper chest under the breastbone. It is part of the lymph system and makes certain types of white blood cells that help the body fight infection.

Source: NCI (NIH)2

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  1. Source: MedLinePlus (NIH): thymuscancer.html
  2. Source: NCI (NIH): types/ thymoma

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