Postoperative biopsy needle

It refers to a more comprehensive pathological examination of the lesions and related tissues and organs removed by therapeutic surgery. Different from preoperative biopsy, the resection is often sent for examination of the entire lesion and may be accompanied by involved or enlarged resection of tissues and organs, as well as lymph nodes (such as radical surgery for malignant tumors). Therefore, all lesions and specimens submitted for examination should be taken from multiple places according to the standard, and conventional formaldehyde fixation, paraffin embedding and HE staining should be performed. During pathological diagnosis, not only the name and nature of the disease should be determined, but also the classification should be given as far as possible, and the degree of invasion, dissemination and surgical margin lesion should be pointed out. It takes 3-7 days to issue a diagnostic report. Because this kind of examination is mostly for patients who are hospitalized in the ward for elective surgery, it is also often called "big biopsy" or "ward big material".

The purpose of postoperative biopsy is to determine the nature, type, severity of the disease, whether the resection is complete, whether there is dissemination, to determine whether the preoperative or intraoperative diagnosis is correct, whether the surgical treatment is complete, whether the need for further adjuvant therapy and prognosis orientation.

The advantages of postoperative biopsy are comprehensive and detailed examination and more reliable diagnosis, which can further provide more information and basis for the treatment and prognosis of the disease. Its limitation is that it cannot be comprehensively diagnosed for diseases that are not suitable for surgical treatment or that are found to be unresectable during surgery. Although there are relevant standards, comprehensive examination of materials, but due to subjective and objective limitations, there are about 1% of the missed, misdiagnosis rate

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