Symptoms of cancer of unknown primary vary, depending on where the cancer has spread in the body.

Symptoms may include:

• a lump or thickening in any part of the body
• a new or unusual pain that doesn’t go away
• a cough or hoarseness of the voice that doesn’t go away
• change in bladder habits (such as more frequent urination) or change in bowel habits (such as constipation or diarrhoea)
• unusual bleeding or discharge
• unexplained fever that doesn’t go away
• night sweats
• loss of appetite or unexplained weight loss.

There are a number of conditions that may cause these symptoms, not just cancer. If any of these symptoms are experienced, it is important that they are discussed with a doctor.