| About.com: Cancer | | Presents general overview information on many of the main kinds of tumors. Includes news, doctor search, glossary and access to support hotlines. |
| ACOR Support | | Links-based listing by the Association of Online Cancer Resources. |
| ACS: Statistics | | American Cancer Society presents an array of related statistics. |
| AllExperts Oncology Q&A | | Comprehensive directory of cancer experts volunteering to answer both general and disease-specific questions. |
| atCancer | | Gives access to a MEDLINE-related search engine, as well as to reference links. |
| BBC News: Cancer the Facts | | A guide to several types of tumors and their treatments including audio from experts, survivors' stories and news archives. |
| Beat Cancer Page | | The site creators indicate that they will donate funds to charity if people buy pixel spots. |
| Cancer Advice UK | | Advice and information about diagnosis and treatment issues. Includes leaflets, book suggestions, links and support groups. |
| Cancer Chart | | Quick reference listing of the most common tumor types. |
| Cancer Forums | | Online discussions on various types of tumors. Includes topics such as coping, support, clinical trials and treatment options. |
| Cancer Information Services | | Information from the U.S. National Cancer Institute including access to links, press releases and publications. |
| Cancer Innovations | | General information about the prevention and treatment of a number of tumor types. |
| Cancer Lynx | | An online 'zine for patients and professionals. |
| Cancer Matters | | Gives general information including a discussion of treatment options on a range of tumors. Provides links and a directory of resources. |
| Cancer Mondial | | The International Agency for Research on Cancer provides access to reports and databases on occurrence and characteristics. |
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