Do needle biopsies speed up the spread of cancer cells? What issues need attention?

In fact, studies have shown that under normal circumstances, about 50% of malignant tumor patients have malignant tumor cells in the blood, but this does not mean that metastatic cancer must be formed. Most cancer cells cannot be under the action of the body's immune mechanism. survive. Only when the body's immune function declines, or the cancer cells shed too much, exceeding the body's own cleaning ability, the cancer cells that escape the net will settle in certain parts of the body, thereby developing into metastatic cancer.

According to the latest news I learned, even if a small amount of tumor cells fall off and enter the blood circulation during needle aspiration, it does not necessarily mean metastasis, because the body's immune system will quickly kill them. Studies have found that the metastasis of breast cancer is mainly related to the tumor and internal environmental factors. Even if planting happens, it will take some time for it to grow. Based on the results of tumor cell kinetics studies, the doubling time of rapidly growing tumors may be 1 to 4 weeks.

For slower-growing tumors, the doubling time may be 2 to 6 months. A large number of follow-up studies have been carried out on breast cancer patients abroad for up to 15 years of needle biopsy. The results showed that surgical treatment within 2 weeks after needle biopsy did not reduce patient survival. Currently, there is no evidence that delaying surgery for one month after needle biopsy does harm to patients. Reasonable treatment can be carried out in the early stage after diagnosis, such as surgical resection within 2 weeks after biopsy.

With reasonable postoperative chemotherapy, the risk of tumor spread and metastasis can be offset by treatment, the tumor is divided into benign and malignant tumors, and if the biopsy is a benign lesion, its spread and metastasis will not occur or promote in any case. Only malignant tumors have metastasis and spread. Tumor metastasis means that malignant tumor cells break away from their primary site, go to other organs, and continue to multiply and grow through the blood circulation and lymphatic system.

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