Postoperative biopsy

Refers to a more comprehensive pathological examination of the lesions and related tissues and organs removed by therapeutic surgery. Different from the preoperative biopsy, the resection and examination are usually all the lesions and may be accompanied by the tissues and organs that are involved or need to be enlarged, as well as the lymph nodes to which they belong (such as radical surgery for malignant tumors). Therefore, all lesions and specimens submitted for inspection need to be collected in multiple places according to the specifications, routine formaldehyde fixation, paraffin embedding, and HE staining. When doing pathological diagnosis, not only determine the name of the disease, the nature of the disease, but also try to classify it, indicate the degree of violation, and There is no dissemination, whether there is any disease on the surgical margin, etc., it takes 3 to 7 days to issue a diagnosis report. Since this type of examination is mostly for patients who are hospitalized in the ward for elective surgery, it is often referred to as "big biopsy" or "well-known ward."

The purpose of postoperative biopsy is to determine the nature, type, severity of the disease, whether the resection is complete, and whether it has spread, to determine whether the preoperative or intraoperative diagnosis is correct, whether the surgical treatment is thorough, whether further adjuvant treatment is needed, and the prognostic orientation Wait.

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

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