Are you coughing up blood or having difficulty while swallowing? Go for a medical check-up, as scientists say they could be among the eight symptoms most closely linked to cancer.
Researchers at the Keele University in UK also suggested the age at which patients should be most concerned by the symptoms, which include blood in urine and anaemia.
The other symptoms they highlighted included rectal blood, coughing up blood, breast lump or mass, difficulty swallowing, post-menopause bleeding and abnormal prostate tests, the BBC reported.
The scientists, who examined 25 previous studies for their research, found that the symptoms gave a one in 20 or higher chance of turning out to be cancer.
Although this still represents a relatively low chance of anyone with the symptom having the disease, they said that any suspicion of cancer can mean that the patient is sent for tests more quickly, in order to catch the disease as early as possible.
The scientists also found that if the patient was below the age of 55, there were only two signs which reached the 'one-in-20' threshold -- a rectal prostate examination which gave abnormal results and a breast lump.
After 55, but only in men, there was evidence that difficulty swallowing could be a sign of oesophageal cancer, while blood in the urine was highlighted as a particular concern for men and women aged over 60.
Dr Mark Shapley, who led the research, said: "GPs (general practitioners or doctors) should audit their management and reflect upon these cases as part of their appraisal to improve quality of care.
"There should be more open public debate on the level of risk that triggers a recommendation for referral by a GP."
Professor Amanda Howe of the Royal College of General Practitioners, said: "It's useful to see these well-known 'red flag' symptoms and signs validated in primary care research, and reinforces the importance of encouraging patients to discuss worrying symptoms early with their GP."
However, a spokesman for Cancer Research UK said these were by no means the only potential warning signs for cancer.
"The particular symptoms this study has highlighted are already thought of as important potential signs of cancer, but there are more than 200 different types of cancer, which cause many different symptoms.
"So if you notice an unusual or persistent change in your body it's important to get it checked out. When cancer is diagnosed at an early stage, treatment is often more likely to be successful."
Researchers at the Keele University in UK also suggested the age at which patients should be most concerned by the symptoms, which include blood in urine and anaemia.
The other symptoms they highlighted included rectal blood, coughing up blood, breast lump or mass, difficulty swallowing, post-menopause bleeding and abnormal prostate tests, the BBC reported.
The scientists, who examined 25 previous studies for their research, found that the symptoms gave a one in 20 or higher chance of turning out to be cancer.
Although this still represents a relatively low chance of anyone with the symptom having the disease, they said that any suspicion of cancer can mean that the patient is sent for tests more quickly, in order to catch the disease as early as possible.
The scientists also found that if the patient was below the age of 55, there were only two signs which reached the 'one-in-20' threshold -- a rectal prostate examination which gave abnormal results and a breast lump.
After 55, but only in men, there was evidence that difficulty swallowing could be a sign of oesophageal cancer, while blood in the urine was highlighted as a particular concern for men and women aged over 60.
Dr Mark Shapley, who led the research, said: "GPs (general practitioners or doctors) should audit their management and reflect upon these cases as part of their appraisal to improve quality of care.
"There should be more open public debate on the level of risk that triggers a recommendation for referral by a GP."
Professor Amanda Howe of the Royal College of General Practitioners, said: "It's useful to see these well-known 'red flag' symptoms and signs validated in primary care research, and reinforces the importance of encouraging patients to discuss worrying symptoms early with their GP."
However, a spokesman for Cancer Research UK said these were by no means the only potential warning signs for cancer.
"The particular symptoms this study has highlighted are already thought of as important potential signs of cancer, but there are more than 200 different types of cancer, which cause many different symptoms.
"So if you notice an unusual or persistent change in your body it's important to get it checked out. When cancer is diagnosed at an early stage, treatment is often more likely to be successful."
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