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2. FIVE FACTS ABOUT BREAST CANCER. Incidence:1 in 9 women in the TCR area develop breast cancer during their lifetime.0.5% of breast cancer cases occur in men.Survival:Now improving. Depends on stage at diagnosis.90% at 5yrs for localised disease, 77% at 5 yrs if lymph nodes involved.Most
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1. 1 THE REGISTRATION OF BREAST CANCER The anatomy of the breast, the pathology and treatment of breast cancer, and collecting breast cancer data
2. 2 FIVE FACTS ABOUT BREAST CANCER Incidence:
1 in 9 women in the TCR area develop breast cancer during their lifetime.
0.5% of breast cancer cases occur in men.
Survival:
Now improving. Depends on stage at diagnosis.
90% at 5yrs for localised disease, 77% at 5 yrs if lymph nodes involved.
Most common agegroup:
50-70 yrs
Population most at risk:
A disease of the western world. It is much less common in Japan.
Predisposing factors:
Very little is known about the causes of breast cancer. In 5% of cases
there is a genetic abnormality.
Japanese women who move to the USA eventually acquire the same risk of developing breast cancer as US citizens, suggesting environmental causes.
3. 3 THE ANATOMY OF THE BREAST The breasts are situated on either side of the upper part of the anterior trunk, from the level of the 2nd rib to the 6th rib, and from the sternum to the axillary midline.
Each breast has a tail which extends into the axilla.
Each breast is made up of 15-20 lobes.
The lobes are separated by septa which are attached to the skin and the chest wall.
Each lobe contains a system of branching ducts embedded in connective tissue.
Each duct starts in a cluster of terminal ductules called a lobule.
The main duct from each lobe opens onto the nipple.
4. 4