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Puncture is an important part of tumor pathological diagnosi.
However, does biopsy increase the risk of tumor metastasis? This is a common concern of many patients, and it is also a problem that doctors often explain in clinical wor.
Theoretically, any invasive procedure on the tumor carries the risk of metastasi.
On the one hand, the puncture will destroy the tumor capsule or cause the shedding of tissue debris, which may cause the tumor to implant and metastasiz.
Some animal studies have shown that puncture may indeed cause implanted metastasis of tumors, and this risk of metastasis is related to the thickness of the puncture needle, but it has not been confirmed by clinical dat.
On the other hand, improper puncture may damage larger blood vessels, and tumor cells may metastasize into blood vessels when they enter the blood vessels, resulting in the involvement of distant organ.
At present, the hollow cannula fine-needle biopsy is widely use.
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The puncture often needs to be guided by B-ultrasound or C.
Even a small amount of cancer cells entering the patient's blood is not enough to cause metastasis, because immune cells in the blood will remove the small number of cancer cell.
Furthermore, even when tumor cell seeding occurs, its doubling time takes weeks to month.
So, can needle biopsy be replaced by other non-invasive means? As far as the current technology is concerned, needle biopsy is still an indispensable means of examination, and is even known as the "gold standard" before surger.
However, these examinations are often unable to determine the nature of the tumor in the face of complex condition.
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Since needle biopsy is a pathological diagnosis, in some cases, direct surgery can be selected without needle biops.
Before the biopsy, the coagulation function and platelet count must be teste.
References Zhang Fan, et a.
Advances in clinical application of prostate biops.
Modern Journal of Urolog.
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