What are the disadvantages of thyroid fine needle aspiration biopsy?

At present, thyroid fine needle aspiration biopsy has become one of the most important methods for preoperative diagnosis of thyroid cancer. However, it also has the following shortcomings:

First, it has a certain misdiagnosis rate, because the tissue volume of thyroid fine needle aspiration is relatively small, and the capsule or vascular infiltration of the mass cannot be found. Therefore, it cannot make a diagnosis of follicular thyroid cancer.

Second, if the location of the mass is very deep, it is difficult for us to puncture the material. For example, in some nodules in the tracheoesophageal groove, this kind of puncture is difficult.

Third, if the hardness of the mass is too large, the puncture needle cannot enter, such as massive calcification, the puncture needle cannot enter.

Fourth, complications, we have high requirements for the doctor's technique for fine needle puncture, so during the puncture, if it is a beginner, the probability of nerve and blood vessel damage may be higher. In addition, after the puncture , The entire nodule and tissue will become hyperemia and hemorrhage due to repeated puncture.

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