How is breast cancer needle aspiration biopsy?

Needle aspiration biopsy is one of the best diagnostic methods so far, but it has some damage to patients. Breast cancer biopsy includes fine needle aspiration, coarse needle aspiration, needle aspiration tissue biopsy with grooves, cut biopsy and excision biopsy. The method is to inject local anesthetics, with a needle through the skin to the lesions, and then keep the needle under a certain pressure, pull out the needle, bring out a certain number of cells, make smear and stain, and finally use a microscope to observe the cell morphology to make a diagnosis.