HOW BREAST CANCER STARTS IN CELLULAR
LEVEL
HOW BREAST CANCER STARTS AND GROWS
Breast tissue:Breast tissue is found in the
breast, upper chest and the armpit. Each breast
contains 15-20 glands called lobes, where milk
is produced in women who are breastfeeding.
These lobes are connected to the nipple by
tubes called ducts. The structure of the lobes
and ducts is a bit like the branches of the tree.
Breast cancer usually begins within smaller
structures of the lobes. Much of the rest of the
breast is fatty tissue. The breast and armpit also
contain lymph nodes and vessels carrying lymph
fluid, which are part of the immune system.
Breast cancer can spread to other areas of
the body through this lymph system or blood
vessels. It’s quite normal for breasts to differ
slightly in shape and size and vary with periods
and pregnancy. They also change as we get
older, for example by becoming softer. Being
breast aware means getting to
know how your breasts look and feel normally,
so you can be on the lookout for any unusual
changes and get them checked by your doctor.
How do cancers start?
Our bodies are made up of trillions of cells. You
have different cells for different parts of your
body – for example skin cells look and work
differently from liver cells. Each cell contains
DNA, which instructs the cell how to look and
behave. Sometimes, our bodies need to make
new cells to replace old ones or repair damage.
To do this, a cell makes an extra copy of all its
DNA and then splits into two new cells. This
process can happen many times over and many
cells can be doing this at any one time.
Normally when a cell splits, a number of checks
happen to make sure that the DNA has been
copied correctly and the new cells have
everything they need to work properly. If a
mistake is found, the cells die. However, if these
safety checks fail, ...................follow link




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