Removing fluid from a lump (or cyst) using a fine needle.

A Biopsy - a small area of breast tissue may be removed and examined under the microscope. This is carried out under local anaesthetic.

An utltrasound is a scan which shows a picture of the tissues within the breast. It uses sound waves to create an image of the breast tissue.

Cytology – where a few cells may be removed from your breast with a very fine needle and examined under a microscope. This test is similar to having blood taken.

The examination of tissues under the microscope to assist diagnosis. For example, after a biopsy is performed, a pathologist will perform a "histological" evaluation, which means the tissue collected will be analysed for any abnormalities.