biology brain cancer

1. Brain Cancer
Presented by: Claire Gui

2. What is brain cancer?
 Brain cancer is a disease of the brain in which cancer
cells arise in the brain tissue.
 Cancer cells grow to form a mass of cancer tissue
(tumor) that interferes with brain functions such as
muscle control, sensation, memory, and other normal
body functions.

3. Types of brain cancer
 Cancer cells that develop from
brain tissue are called primary
brain tumors.
 Tumors that spread from other
body sites to the brain are
termed metastatic or secondary
brain tumors.

4. About brain cancer
 Statistics suggest that brain cancer occurs infrequently and
is likely to develop in about 22,850 new people per year
with about 15,320 deaths as estimated by the National
Cancer Institute and the American Cancer Society.

5. Symptoms and Signs
 The most common symptoms of brain
cancer are
1.difficulty walking and or dizziness,
2.seizures
3.weakness
4.headaches
 Other symptoms are nausea, blurry
vision, or a change in a person's
alertness, mental capacity, memory,
speech, or personality.

6. What tests are used to diagnose brain cancer?
 The initial test includes a medical history and physical
examination of the person by a health-care provider.
 The most frequently used test is a CT scan (computerized
tomography). This test resembles a series of X-rays and is not
painful, although sometimes a dye needs to be injected into a vein
for better images of some internal brain structures.
 Another test that is gaining popularity because of its high
sensitivity for detecting anatomic changes in the brain is MRI
(magnetic resonance imaging).

7. Are there any home remedies for brain cancer?
 There are many home remedies that make claims of being
effective in treating brain cancer. Most are nutrition or
supplements like herbs, fish oils, chokeberry, and many others.
 there is no way to prevent brain cancers, early diagnosis and
treatment of tumors that tend to metastasize to the brain may
reduce the risk of metastatic brain tumors.

8. What is the treatment for brain cancer?
 Surgery
 Radiation therapy
 Chemotherapy

9. Surgery
 attempts to remove all of the tumor cells by cutting the tumor
away from normal brain tissue
 Some brain cancers are termed inoperable by surgeons because
attempting to remove the cancer may cause further brain damage
or death
 However, a brain cancer termed inoperable by one surgeon may
be considered operable by another surgeon.

10. Radiation therapy
 attempts to destroy tumor cells by using high-energy radiation
focused onto the tumor to destroy the tumor cells' ability to
function and replicate
 focused gamma-ray or X-ray beams that converge on the specific
area or areas of the brain where the tumor or other abnormality is
located, minimizing the amount of radiation to healthy brain
tissue.

11. Chemotherapy
 attempts to destroy tumor cells using chemicals that are designed
to destroy specific types of cancer cells.
 used specific drug therapies are numerous, and each regimen is
usually designed for the specific type of brain cancer individually.
 can be administered intrathecally by IV administration, and
biodegradable chemically impregnated polymers
 attempt to spare normal brain cells.