Histopathological examination

The pathological examination is the gold standard for the diagnosis of soft tissue sarcoma. The type and degree of malignancy (pathological grade) of the sarcoma can be determined by the pathological examination.

• Fine needle biopsy: a tumor specimen or its cellular components are obtained using a puncture needle tip after local anesthesia. If the mass is deep inside the body, doctors can use ultrasound or CT scans to locate the mass for a needle biopsy.

• Excision biopsy: part of the tumor tissue or the whole tumor is removed with a surgical scalpel after anesthesia to obtain specimens for pathological examination, which is suitable for small tumors occurring at the superficial part of the body (superficial lesions <5cm in size).

• Open biopsy: The area is opened with a surgical scalpel and part of the tissue sample is removed from the lump or entire tumor; It can be done under local or general anesthesia, depending on the location and depth of the tumor.

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