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The human body consists of cells of different forms and functions. Pretty simple, every cell contains an outer envelope and the nucleus, and in the nucleus reservation background of the cell. This information in fact be present in the molecule DNA, DNA - deoxyribonucleic acid.Contains DNA from chromosome 26, which itself is composed of millions of genes. These genes are determined by the system and the functioning of the cell.
During some of our body's cells die naturally and the body compensates for that deficiency in cells through division. When the cell division to produce another copy of the DNA and then divided into two cells. This is what happens in the cell is very simple, as the process of division is more complicated than that. Cell division usually occurs on a regular basis so that our bodies growth or to replace or repair damaged tissue. When you are working cells as planned, we enjoy good health, but when the system breaks down, we get sick. In the case of cancer cells grow abnormally, and instead of compensating the damaged cells only, these cells proliferate dramatically outweighed by non-stop on a patient and the problem of so-called tumor.
Tumors that result from the imbalance of two types, namely:
Benign (not cancerous Benign): It is usually packed membrane and non-dispersible, but some may cause problems for a member of the injured, especially if the large size and the impact would be infected by clicking on the member or members close to them, preventing them from working normally. These tumors can be removed surgically or treated with drugs or radiation to reduce the size and it will be enough to heal them and often do not go back again.
Malignant neoplasms (cancer Malignant): a theme of the site. Tumors attack and destroy cancerous cells and surrounding tissue and have a high potential for spread. They spread three ways
Spread directly to the tissues and organs surrounding organ injured
Through the lymphatic system.
Through the bloodstream, where it separated from a cell (or cells) of the initial tumor Primary and transmitted through the device Allmphoui or blood to other organs far enough to settle in somewhere - often members of the rich blood, such as lung, liver or lymph nodes - causing the growth of cancerous tumors other secondary tumors are called Secondary.
Cancer is a group of diseases (more than 100 disease) are similar in some characteristics with each other, because the cancer has been designated as swollen blood vessels around the tumor-like parties lobster. This disease or these diseases result from the cell out of control. No change in the cell, making it out of the control system that controls the cell as in healthy cells.There are more than the theory attributed to the cause of the beginning of cancer in the body.The first says that error occurred in the DNA at the division which is called the situation "change" or mutation. The incidence of error in the DNA at the division over the increasing exposure to carcinogens such as tar in cigarette smoke. Many of these causes for different types of errors occur in the human body but the body's immune system recognize them because they differ from the rest of the cells and destroy them. Sometimes the immune system fails to identify those cells to its similarity with the rest of cell division and cause whereupon the presence of cancer.
A modern theories say that the reason is the existence of a simple genetic defect can not be seen from the immune system and the imbalance with time cause the exit of the cell of control and then the emergence of cancer. This theory explains the appearance of some types of tumors in more than one individual from the same family.
Carcinogens Carcinogens:
Whether there is a genetic defect or not, there are known to cause cancer and is divided into three sections:
Physical carcinogenic particles such as radioactive isotopes, ultraviolet rays, and some metal-fiber Mineral fibers. The work of the radioactive isotopes holes for nucleic acid when exposed to causing the imbalance in gene regulation. Comes from the radioactive isotope X-rays, cosmic rays that reach the ground and radon gas (found naturally in the earth varying degrees) as indirectly. The UV radiation, which comes from the sun and caused the thread of some proteins in the DNA at the time should not be as well, causing an imbalance in the DNA. Some metals, such as the asbestos fibers cause direct damage to DNA due to the large size.
Carcinogenic chemicals, such as the Benzopyrene found in cigarette smoke and the vinyl chloride used in the plastics industry is linked with molecules of DNA, causing the imbalance.
Carcinogens, biological, such as viruses or bacteria which cause an imbalance in the cell to change to a cancer cell. Examples of viruses with human papilloma virus causes cervical cancer, and hepatitis virus B (hepatitis B virus), which causes liver cancer, the most common cancer among men in Saudi Arabia
Passes through the cancer to grow in three main phases:
Start (Initiation): This first step towards the formation of the tumor where it starts at the level of cell change in their work and a simple way to control the material in this work that caused this initially called carcinogens (carcinogens).
Development (Progression): tumor is composed by one cell and have success in growth and division at the expense of other cells, in this phase can be seen Mkroskubia
Clinical tumor (Clinical): here is a large tumor size, if not treated will continue to grow and destroy adjacent tissues and may spread to distant organs.
Cancer is not mentioned as one disease, a disease is different for different cells which gives rise to. And her difference from each other they differ in their actions Some other fast-growing and slow, some fast spreading and another does not spread quickly. But all of these types have similar characteristics with different patients.
Cancer treatment varies depending on the type member of the tumor or the patient. In general, main roads for the treatment of cancer are surgery, the removal of organs or tissue, radiation therapy using radiation to treat the tumor, chemotherapy drugs, chemicals, and using hormone therapy, using hormones for some types of cancer and be exposed to these methods in detail in the other pages.
Some types of cancer:
• brain tumors
• cancer of the mouth
• cancer of the throat
• Lung Cancer
• Breast Cancer
• cancer of the stomach
• cancer of the pancreas
• Liver Cancer
• cancer of the colon and rectum
• cancer of the urinary bladder and ureter
• Ovarian Cancer
• cancer of the lining of the uterus
• Cervical Cancer
• Testicular Cancer
• leukemia
• cancer of the lymph glands
• tumors of bone
• Skin Cancer
Tabao me a very important issue
God away from us and you, all kinds of diseases
The definition of brain cancer:
Division is abnormal and irregular cells in the brain, both in the brain, the cerebellum or spinal cord, which causes compression of the other parts of the brain and therefore the loss of one of the senses or weakness.
And primary brain tumors (ie, those originating in the brain) are very rare, unlike secondary brain tumors which are due to the spread of the disease from other members of the body and into the brain.
Symptoms:
Brain tumors, whether benign or malignant cause similar symptoms, which vary according to place of occurrence of the brain. It is these symptoms:
1. Headache, especially that which affects a person in the morning.
2. Nausea and vomiting.
3. Cause convulsions.
4. Weakness of some of the parties Kalalloip or lower.
5. Some senses weakness or vulnerability.
Causes:
Has no reason yet unknown.
Diagnosis:
X-ray scan of the head to make sure that the work of a tumor after clinical examination.Similarly, the examination of the nervous system is important so they can see the place of infection in the brain.
And other tests that could be carried colored material is injected into an artery feeding the brain, and then photographing the head with showing all the arteries there. This examination is carried out if there is an intention to undergo surgery to remove the tumor
Methods of Treatment:
1. Surgical intervention to remove the tumor if the spot to remove the pressure on other parts.But sometimes it is difficult to hold the operation if the tumor near the site of a vitally important role in the brain.
2. Radiotherapy.
3. Chemotherapy with interest that it is limited as the drugs can not enter the brain through blood vessels, but can be injected the drug in the cerebrospinal fluid.
Prevention:
No methods of protection from the lack of knowledge of causes or factors leading to it.
Most important types of brain tumors:
• Gliomata
• Glioblastoma Multiform
• Astrocytoma
• Acoustic Neurinoma
• Meningioma
• Pitutary Tumours
• transitions secondary to other tumors such as lung cancer or breast cancer.
Brain tumors | oral cancer | throat cancer | lung cancer | breast cancer | stomach cancer | pancreatic cancer | liver cancer | colorectal cancer | cancer of the urinary bladder and ureter | ovarian cancer | endometrial cancer | cervical cancer | testicular cancer | leukemia | Lymphoma Cancer | Bone Cancer | Skin Cancer
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