Oncologist-approved cancer information from the American Society of Clinical Oncology
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Cancer Basics

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This section provides information on the following topics:

What is Cancer?

Cancer is a group of more than 100 different diseases characterized by the uncontrolled, abnormal growth of cells. These cells form a lump or mass called a tumor. This section contains information about cancer.

The Cancer Care Team

Learn how multiple professionals work as part of a health care team, which often includes oncologists, oncology nurses, and additional health care professionals.

Genetics

Genetics is the study of how traits and diseases are inherited from one generation to the next. This section provides information on genetics and cancer, genetic testing, and genetic information for individual cancer types.

Basic Cancer Terms

This article defines basic oncology terms, including those used in the detection of cancer.

Statistics Terms

This article defines statistics terms used in cancer research.

Treatment Terms

This article defines cancer terms that you may hear your doctor use when you are being treated for cancer.

After Treatment Terms

This article defines cancer terms that you may hear your doctor use once you have finished treatment.

© 2005-2014 American Society of Clinical Oncology (ASCO). All rights reserved worldwide.

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