Information for Patients

A mammogram is an x-ray picture of the breast.  It is used to detect and diagnose breast disease in women who either have breast problems such as a lump, pain, or nipple discharge, as well as for women who have no breast complaints.  The procedure allows detection of breast cancers, benign tumours and cysts before they can be felt.

Mammography cannot prove that an abnormal area is cancerous, but if it raises a significant suspicion, a biopsy may be performed. 

You are advised to wear a skirt or trousers as you will be asked to undress to the waist and put on a gown. On the day of the appointment, please avoid using ANY deodorants or talcum powder as they can affect the quality of the x-ray.

If you have breast implants, please let the radiographers or radiologists know.  Sometimes breast implants can hide breast tissue, which could make it difficult for the radiologist to evaluate all tissues.

The investigation involves exposure to x-rays.  X-rays consist of a type of radiation known as ionising radiation.  The doses that are used in medical x-rays are very low and the associated risks are minimal.  We keep the doses as low as possible and make sure that the benefits of having the x-ray outweigh any risk. 

Also, x-rays can be harmful for an unborn baby and should be avoided by women who are or who may be pregnant.  It is recommended that the examination is performed within 10 days of the first day of the onset of your menstrual period. 

Most mammograms are performed in the standing position in the privacy of the mammography room, located in the Breast Care Centre. 

The radiographer positions the breast onto a flat x-ray plate, then from above another plate will press down and flatten your breast for a short time while the picture is being taken.  Most women may find this uncomfortable or painful, but the breast is only compressed for a very short time.  Two images will will be taken of each breast.  If your breasts are particularly tender at certain times of the month you may wish to change your appointment.

The whole procedure takes about 10-20 minutes.

Once the examination is completed you will be taken back to your cubicle to get dressed. You may then go home and eat and drink normally.

The results of your examination will not be given to you on the same day. To receive these results you will need an appointment see either the consultant who referred you, or your own GP. You will be told after the examination which of these doctors you need to see.