Mastectomy
Many cancers can be treated with breast conserving surgery.
There are some situations however, where a complete mastectomy is
the most suitable form of treatment.
A modified radical mastectomy is the standard operation in these
situations. All of the breast tissue, overlying skin and the nipple
are removed to leave a thin transverse scar across the chest. The
chest-wall muscles are preserved.

Patients who have a mastectomy do not usually require radiotherapy
to the chest wall unless the margin of excision is inadequate or
there are multiple axillary nodes affected by the cancer.
Reasons for having a full mastectomy include:
- Large tumour
- Multiple tumours
- Patient unwilling or unable to have radiotherapy after
surgery
- Cancer recurrence following breast-conserving surgery
- Patient preference
After mastectomy you will be provided with a soft temporary
prosthesis to wear inside your bra. Once the wound is healed you
will be fitted with a permanent external prosthesis that is
measured to match your other breast in size and weight.
Some women with a large breast size elect to have a reduction
procedure on the healthy breast. This reduces the asymmetry and
helps with dressing and balance.
Both partial and full mastectomy operations are performed under a
general anaesthetic and require about two to two and a half hours
in theatre.
A plastic suction drain will be inserted to drain any fluid that
may build-up in the first few days after surgery. The drain is
usually removed after 2-3 days, before you leave hospital.
The incisions are closed with dissolving sutures positioned under
the skin and this means that no stitches need to be removed.
You will spend 2-3 nights in hospital and by the time you are
discharged you should be quite mobile and able to manage all
routine activities.
Pain is usually easily controlled with Panadol or other simple
pain tablets.
There will be a waterproof, plastic dressing covering the wound
and you can bath and shower as normal
Possible complications after partial or full mastectomy
Bruising - is common and will settle in a couple
of weeks.
Bleeding - occasionally there may be extensive
bleeding into the tissues that can cause painful swelling. This is
called a haematoma and you may need to go back to theatre so that
the bleeding can be controlled properly.
Wound infection - causes the wound to become
tender, warm and swollen. There may be redness and discharge of pus
from the wound. You may feel feverish. Antibiotics will be
required.
Seroma - A collection of fluid may form at the site of
surgery. This can be easily drained in the clinic with a needle and
syringe. Fluid build-up usually stops within 3- 4 weeks.
Decreased sensation - There may be areas of
numbness in the skin of the breast and also along the inside of
your arm.
Swelling and heaviness - the breast and chest wall may
feel heavy and uncomfortable for some months after radiotherapy or
surgery. Using a comfortable and supportive bra during this time
will help.
Balance and posture - After mastectomy some women may
notice a change in posture due to loss of the breast. Wearing a
breast prosthesis will help.
Breast and nipple distortion - After partial
mastectomy there may be a significant change in the shape and size
of the breast. The nipple position may also change. A small breast
prosthesis can be worn in the bra to compensate. Alternatively one
can consider having a reduction procedure to adjust the size of the
other breast.
Local recurrence - even after a full mastectomy
there is a 5-10% chance that the cancer could recur either on the
chest wall or in the scar.
Emotional and psychological effects - the
diagnosis and treatment of breast cancer can have significant
effects on a womens' self-esteem, body image and relationships.
Please discuss any concerns or difficulties in this area. Support
and professional counselling are available.
Breast Prosthesis Subsidy There is a government subsidy available
for purchasing a suitable prosthesis.
Read more about terms and conditions of HFA subsidy at
Breast Prosthesis Subsidy
A request form can be completed after your surgery.
There are a number of specialist shops that provide advice and
assistance with selecting a prosthesis
Anita Breast Care Centre 1st Floor Lingerie
World, Silverdale Ph 09 4275283 or
0800 264822
Naturalwear Surgical fitting service 120 Symonds street, Royal
Oak, Auckland Ph 09 6243718
Amoena prosthetic range
Breast Care Book
Comprehensive Information and
advice on all aspects
of breast care.
Meet the Surgeon
Trevor Smith MBChB FCS