How is a core biopsy done?
A core biopsy is a simple procedure, performed to collect a sample of cells from a mass so they can be examined under a microscope. No special preparation is required, though most centres ask that you don’t use any powders (such as talcum powder), lotions, creams, perfumes or deodorants near the area to be sampled. Core biopsy is performed with the use of local anaesthetic to numb the area where the needle is inserted. A small incision (cut) is made in the skin over the lump, and a needle is inserted through the incision. When the tip of the needle is in the area to be examined, the specially-designed hollow needle is used to collect a sample of the cells that are present. This is shown in the diagram below. The needle is then withdrawn, and the sample extracted. This may be repeated up to 5 times, until an adequate sample has been collected. In some cases, the lump or mass from which the cells are to be taken is not easily felt through the skin. If this is the case, the radiologist, s