Cancer - Unknown Primary

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Additional resources for cancer of unknown primary

More information from your American Cancer Society

We have a lot more information that you might find helpful. Explore or call our National Cancer Information Center toll-free number, 1-800-227-2345. We’re here to help you any time, day or night.

National organizations and web sites*

Along with the American Cancer Society, other sources of information and support include:

National Cancer Institute (NCI)
Toll-free number: 1-800-422-6237 (1-800-4-CANCER)
TTY: 1-800-332-8615

    Their “Cancer Information Service” offers a wide variety of free, accurate, up-to-date information about cancer to patients, their families, and the general public; also can help people find clinical trials in their area

National Coalition for Cancer Survivorship (NCCS)
Toll-free-number: 1-888-650-9127

    Has publications on many cancer-related topics; also offers the Cancer Survival Toolbox – a free program that teaches skills that can help people with cancer meet the challenges of their illness

*Inclusion on this list does not imply endorsement by the American Cancer Society.

No matter who you are, we can help. Contact us anytime, day or night, for information and support. Call us at 1-800-227-2345 or visit

Last Medical Review: 07/02/2014
Last Revised: 01/27/2016