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Help Using the NCI Web Site

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This is the central Web site for the National Cancer Institute (NCI). NCI is a part of the National Institutes of Health, within the U.S. Department of Health and Human Services. This Web site offers free, credible, current, comprehensive online information about cancer prevention, diagnosis, treatment, statistics, research, clinical trials, and news, as well as links to other NCI Web sites. For help using this site, please see below or visit our Help page to contact an NCI information specialist by telephone, online chat, or e-mail.

Specific Content Areas

The main content categories on the NCI Web site can be viewed by clicking on the tabs along the top of each page of the site:

Cancer Topics
Clinical Trials
Cancer Statistics
Research & Funding
About NCI

Our Site Map provides a clickable outline of these categories and their contents.

Information in Spanish / Información en español

El área de español proporciona información selecta sobre el cáncer en español.


NCI's Web site offers a specialized search capability for several content areas.

Clinical Trials Search Form. Use this form to search NCI's comprehensive PDQ® registry of cancer clinical trials. The form allows searching by information such as type of cancer, location of trial, type of treatment/intervention, or drug name.

Search Cancer Genetics Services Directory. Use this form to search the Cancer Genetics Services Directory, a list of individuals who provide services related to cancer genetics. You can limit your search by choosing a specific cancer type, cancer family syndrome, and/or geographic location.

Search Cancer Literature in PubMed. This page links to the National Library of Medicine's PubMed database, which provides access to over 12 million MEDLINE literature citations dating back to the mid-1960s. You can search the PubMed database using specific terms or phrases.

Alternatively, you can use Cancer Topic Searches (preformulated searches of PubMed) to retrieve literature citations on more than 100 major cancer topics.

Find News Releases. The News area of the NCI Web site contains a search function for retrieving news stories by date and keyword searching.

Privacy Policy

This Web site's privacy and security policy is consistent with the Web site policies of other federal government agencies.

Linking Policy

For information on linking to this site or any part of the site, please see our Linking Policy. Our Links to Other Web Sites page includes links to NCI partners and to other government Web sites. It does not include links to commercial or private Web sites.


This is NCI's central Web site. It includes links to many other Web sites within and outside NCI, some of which may not be entirely accessible. However, NCI is committed to making this site itself accessible to all users, regardless of special need. The site is compatible with screen readers and other assistive devices. If you are using assistive devices and have difficulty accessing information on the site, please send an e-mail to and include the URL(s) of the page(s) you are having trouble with. You can also call NCI's Office of Cancer Content Management at 301-496-9096 for assistance.


For information about permission to reproduce information and/or images found on this Web site, please see the Copyright and Reuse of Graphics and Text page.

Frequently Asked Questions

Our FAQs provide answers to common questions about NCI's Web site.

Questions or Comments

If you have a question or comment about this site, please feel free to use our online contact form or write to us at

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