About cancer of unknown primary

Primary & secondary cancers

Information on primary and secondary cancers in relation to cancer of unknown primary

Cell types

Information on cell types and cancer of unknown primary (CUP).

What is CUP?

An explanation of what cancer of unknown primary (CUP) is and possible reasons why the primary cancer can't be found

Social Media Groups

Questions about cancer?

For answers, support or just a chat, call the Macmillan Support Line free (Monday to Friday, 9am-8pm)

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If you have any questions about cancer, need support or just want someone to talk to, ask Macmillan.

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Macmillan Cancer Support, registered charity in England and Wales (261017), Scotland (SC039907) and the Isle of Man (604). A company limited by guarantee, registered in England and Wales company number 2400969. Isle of Man company number 4694F. Registered office: 89 Albert Embankment, London SE1 7UQ.