1. By Cameron & Isaiah

2. • Cancer is a large group of disorders with different
symptoms
• Almost all cancers have the same cause: cells
multiplying uncontrollably
• The bad genes at the start of the problem may be
inherited, caused by known carcinogens or just by
ageing.
• A cancerous cell divides to form two cells that contain
damaged genetic material . If these are left untreated
the cancerous cell will multiply uncontrollably.
• Once you have cancer in one place it can travel to
other places in your body.

3. • First carcinogens continually bombard cells and many
eventually affect genes on the chromosomes. Often new
damage to the oncogenes is limited and soon repaired.
• Second damage to oncogenes and repair continue, but with
time or higher than normal exposure to carcinogens, some of
the oncogenes suffer permenent harm.
• Eventually a number of oncogenes are permanetly altered.
Key cell funtions are irreparably
affected and the cell tips over into cancerous mode.
• Carcinogens -A substance capable of causing cancer in living
tissue
• Oncogenes- A gene that in certain circumstances transforms a
cell into a tumor cell.

4. • Cancer is a growth that damages surrounding tissues
and organs.
• Non cancerous cells divide and replace at a controlled
rate. A cancerous tumor is a mass of abnormal cell that
divide extremely quickly and don’t carry out the normal
functions of their tissue.
• These cells are often irregular in size and shape.
• As these cells divide and multiply a tumor can gradually
enlarge.

5. • It takes just one cell to undergo cancerous changes for a
tumor to form.
• The cell divides into two cells which do the same and so
on. the total number of cancerous cells double every
division.
• After 25-30 divisions there are around a billion cells
which then you can see a tumor forming.

6. • Cancer can be spread by lymph and by blood
• If the tumor is near a lymph vessel then eventually the
cancer cells will go through the vessel and reach the
lymph node. Once it reaches the lymph node it will for a
tumor.
• If a cancer cell gets into the blood the cell will travel all
over to places that are reached by blood vessels. The
cancer cells will slowly go out of the vessels and form a
tumor.

8. • Bone Cancer • Lung Cancer
• Brain Cancer • Cancer in children
• Breast Cancer • Skin Cancer
• Anal Cancer • Testicular Cancer
• Eye Cancer • Bladder Cancer
• Leukemia • Intestinal Cancer

9. • Breast Cancer is a malignant tumor that starts in the cells
of the breast.
• The disease usually occurs in women but sometimes it
may occur in men.
• The female breast is made up of lobules, ducts, and
stroma
• Most breast cancer start in the cell that lines the ducts

11. • leukemia starts in the soft part of the bone aka the bone
marrow it can quickly spread to the blood and once that
happens it can spread to other parts of your body, such as the
lymph nodes, spleen, liver, as well as the central part of your
nervous system, and other organs.
Children and adults can get leukemia witch is a complex
daises with many types and subtypes.
Bone marrow is the soft spongy part of the part of the bone
and all these different blood cells are made in the marrow

12. • Anal cancer is a rare disease
that attacks the anus, the body
opening to the lower intestine.
The anal and its surrounding
are made up of several different
types of cells were tumors can
begin to develop.
• Not all anal tumors develop in
to cancer
• Anal cancer is beginning to
come up in Los Angeles in
2008 over 700 people died
from anal cancer

13. The