Intraoperative biopsy needle

A biopsy performed during a therapeutic or exploratory operation, usually within 20 to 30 minutes, to make a qualitative diagnosis and guide how to proceed. The most widely used technique is rapid freezing. Fresh specimens without fixation are rapidly frozen to below -18 ℃ for section and HE staining for observation and diagnosis. Therefore, it is also called "intraoperative freezing", "rapid freezing", or "cryosectioning", and sometimes rapid paraffin sectioning or cytology can be used.

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