NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,054 terms related to cancer and medicine.
- natural history study
- listen (NA-chuh-rul HIH-stuh-ree STUH-dee)
- A study that follows a group of people over time who have, or are at risk of developing, a specific medical condition or disease. A natural history study collects health information in order to understand how the medical condition or disease develops and how to treat it.