The purpose of intraoperative biopsy needle is to:

① Determine the nature of the lesion in order to decide the surgical plan. For a lesion of unknown nature, take the lesion on the operating table for examination and wait 20-30 minutes. If the frozen section is diagnosed as inflammatory or benign tumor, the scope of operation is very small. In case of malignancy, radical resection with extended resection is performed immediately.

② Understand the lesions, especially the growth and spread of malignant tumors, such as the extent and depth of invasion, whether there is lymph node metastasis, and whether the marginal tissue of surgical resection has tumor cells, to determine the scope of surgery.

③ Determine whether the specimen contains predetermined tissues and organs or lesions. If the parathyroid gland is to be removed, but it is not clear in the operation field, it can be confirmed by freezing biopsy.

The greatest advantage of intraoperative biopsy is that during the operation, it can confirm the lesion of unknown nature, so that the clinical treatment can be determined immediately, and avoid the second therapeutic operation. Patients can avoid a second operation, medical staff can save the burden of another operation. Secondly, it plays the role of placing a hundred-fold magnifying glass for the surgeon, which can know how deep and far the lesion is invaded, and whether there are tumor cells in the incision margin.

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