Cancer of unknown primary (CUP)
All about cancer of unknown primary (CUP), which means that cancer spread has been found somewhere in your body (secondary cancer), but your doctors can't find out where the cancer started (the primary cancer). CUP is sometimes called carcinoma of unknown primary, unknown primary cancer or unknown primary tumour. Information on causes, tests to diagnose cancer, treatment including radiotherapy, chemotherapy, hormone therapy and current research. Living with cancer of unknown primary covers coping with your diagnosis.
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