How can you distinguish between primary and secondary cancer?

How can you tell if breast cancer is primary or secondary?

Some women who have just been diagnosed with primary breast cancer have tests that show the cancer has already spread to other parts of the body. Sometimes the secondary breast cancer is diagnosed first and tests show that it first started in the breast. Blood tests cannot diagnose secondary breast cancer.

Can you find secondary cancer before primary?

Sometimes secondary cancers are found in one or more parts of the body, but despite several tests, doctors can’t find the primary tumour. If tests show that you have a cancer that has spread, but your doctors can’t find the primary tumour, it’s called a malignancy of unknown primary origin (MUO).

What are the symptoms of secondary cancer?

Symptoms of secondary breast cancer in the brain include:

  • Headache.
  • Nausea (feeling sick) and vomiting (being sick)
  • Weakness or feeling numb down one side of the body.
  • Unsteadiness or loss of balance and co-ordination.
  • Seizures (fits)
  • Difficulty with speech.
  • Problems with vision.
  • Changes in behaviour, mood or personality.

What type of breast cancer is most likely to recur?

Among patients who were recurrence-free when they stopped endocrine therapy after five years, the highest risk of recurrence was for those with originally large tumors and cancer that had spread to four or more lymph nodes. These women had a 40 percent risk of a distant cancer recurrence over the next 15 years.

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Can you have two primary cancer sites?

A second primary cancer may occur in the same tissue or organ as the first cancer, or in another region of the body. These second cancers may be related to a genetic predisposition, common risk factors, treatments for the original cancer, or simply occur sporadically as cancer often does.

What stage is secondary cancer?

stage IV – the cancer has spread from where it started to at least one other body organ; also known as “secondary” or “metastatic” cancer.

How long does it take for secondary cancer to develop?

A second cancer can appear at any time during survivorship. Some studies show that a common time for cancers to develop is from five to nine years after completion of treatment. For childhood cancer survivors, secondary leukemia is most likely to occur less than ten years after treatment of the original cancer.

What is the most common secondary cancer?

The most frequently observed solid secondary malignancies are breast cancer, thyroid cancer, and bone/soft tissue sarcomas [6, 12, 33–38].