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Malignancy of Unknown Origin (MUO)

A Malignancy of Unknown Origin (MUO) is the term we use when a patient is diagnosed as having cancer but the origin of the cancer cannot be identified. When an MUO is diagnosed it can be very hard to accept that even with tests, the primary cancer cannot be found. You’ll probably be coping with difficult feelings, so it is important to get the support you need.



How can you contact us?

The MUO nurse at York can be contacted directly on 01904 724516 between 8.00am - 6.00pm, Monday to Friday

The MUO nurse at Scarbough can be contacted directly on 07979 645059 or 01723 236236 between 9.00am - 5.00pm, Monday to Friday. 

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Royal College of Nursing members at our Trust are taking part in strike action Monday 6 and Tuesday 7 February from 7.00am to 8.00pm. This will impact services at our hospitals.

If you are due to attend an appointment and we haven't already contacted you, please come as planned.

On days where there is strike action, patients should only call 999 if it is a medical or mental health emergency (when someone is seriously ill or injured and their life is at risk).