Auxiliary diagnostic methods may be necessary, such as mammography, breast ultrasound (ultrasound examination), aspiration of cysts, etc.
When a mass is clinically palpable and mammography detects a nodule with well-defined contours, ultrasound is what will allow its content to be distinguished between solid and liquid.
But if a mass is palpable and not seen radiologically, it must be removed by surgery and histopathologically studied.
In the presence of a nodule with ultrasound signs of a cyst, the correct attitude will be the evacuating puncture to obtain material, which can be studied by cytology if it has bloody characteristics, or if it is cloudy or opalescent it should be sent for histopathological study. . If it is predominantly fibrous, the mammogram will show microcalcifications or calcifications, where it is already advisable to do a biopsy.