Is the situation of pulling out radish and taking out mud in needle biopsy true or false?

First, while a biopsy may contaminate the needle with a small number of malignant cells, this does not necessarily mean metastasis because the body's immune system will quickly kill them.

Second, instruments for needle biopsy are improving. The present sampling instrument has a complete tube structure. At the same time, when the needle is placed, the inner tube enters the tumor body to take samples when it is close to the tumor body, and then returns to the outer tube to take out the samples through the protective channel formed by the outer tube, so as to avoid the leakage of tumor cells in the process of needle extraction and protect the human body to the greatest extent.

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