However, the cells can remain dormant for years, and unknown factors can trigger their reactivation, resulting in tumor formation. Symptoms depend on where and how the cancer recurs. If it recurs at the original site, symptoms will be similar to those that led to the diagnosis of the original tumor. For example, if the cancer is a breast cancer and it recurs at the original site, a lump will occur. If it moves to bone, then the person usually will experience pain in the area of the new tumor.
Treatment depends upon the type of cancer and the extent of the recurrence.
Even though many recurrent cancers cannot be cured, treatment will often improve the quality and length of life. The overall goal is to maintain a patient's normal lifestyle. For the most part, it is still very difficult to predict and prevent cancer recurrence. However, thanks to new technology, this may soon change. The Food and Drug Administration recently approved a genetic test that predicts breast cancer recurrence from a sample of breast cancer tissue.