CANCER

Cancer is a class of diseases characterized by out of control cell growth. There over hundred differ types of cancer, and each s classified by the types of cells that is initially affected. Cancer harms the body when damage cell or masses tissue call tumors (except in the case leukemia where cancer prohibits normal blood function by abnormally cell division in the blood stream). Tumors can grow and interfere with the digestive, nervous and circulatory system and can release hormones that can alter body function. Tumors can stay in the spot and demonstrate limited growth and generally considered to be BELIGIN. More dangerous or MALIGNAN is TUMORS form when two things occur:

1.      A cancerous cell manages to move throughout the body using the blood or lymph system, destroy healthy tissue in a process called INVATION.

2.      That cell manage to divide and grow making new blood vessel to its self in a process called ANGIOGENESIS when a tumor successfully spreads to other part of the body and grows, if invading and destroying other tissues, it is said to have MENTASTAZED. This process itself is called metastases and the result is a serious condition that is very difficult to threat. In 2007 cancer claimed the of about 7.6 million in the world. Physician and researcher who specialize in the study, diagnoses, treatment and prevention of cancer are ONCOLOGISTS.

CAUSES OF CANCER.

Cancer is ultimately the result of death that uncontrollably grows and do not die. Normal cells in follows an orderly part of growth, division, death programmers called death is called APOPTOSIS and when this process break down cancer begin unlike regular cells, cancer cells do not experience programmatic death, and instead continue to grow and divide.

This lead to mass of abnormal cells that grows out of it controls. Cancer occurs when a cells gene mutation make the cell enable to correct DNA damage and unable to commit suicide.

Similarly, cancer is a result mutation that inhibit on cogent and tumor suppressor gene phonation, leading to uncontrollable cell growth.

Cancer can be the result of a genetic predisposition that is inhibit for family members. It is possible to be born with certain genetic mutation or a fault I gene that makes one statistically more likely to develop cancer late in life. As we age, there is an increase in number of possible cancer causing mutations in our DNA. This makes age and import risk factor for cancer.

Several viruses have also been link to cancer such as:

HUMAN PAPILLOLAVIRUS (a cause of cervical cancer)

HEPATITI B & C (causes of liver cancer) and EPSTEIN BARR VIRUS

(A cause of some childhood cancer) HUMAN IMMUNE DEFICIENCY VIRUS (HIV)

And anything else that suppresses the immune system inhibits the body ability to fight infection and increases the chances of developing cancer.

SYMPTOMS OF CANCER

Cancer symptoms are varied and depend on where the cancer is located, where are as speed, and how big the tumor is. Some cancer can seen through the skin – a lump on the breast or testicles can an indicator of cancer in those location.

Skin Cancer (MELANOMA) is often noted by a change in what or mole on the skin. Some oral cancer present white patches inside the mouth or white spots on the tongue. Some bring tumors tend to present symptoms early in diseases as they affect important cognitive function.

Pancreas cancer are usually too small to cause symptoms until they cause pain by pushing against nearby nerves of interfere with liver function to cause a yellowing of the skin and eyes called JAUNDICE.

HOW IS CANCER DIAGNOSED

Early detection f cancer can greatly improve the odds of successful treatment and survival. Physicians use information from symptoms and several other procedure to diagnose cancer. Imaging techniques such as x-ray, CT scans, MRI scans, PET scans and ultral sound scans are use regularly in order to detect where a tumor is located and what other may be affect by it.

Doctor may also conduct an ENDOSCOPY, which is a procedure that uses a tin tube with a camera and light at one end, to look for abnormalities inside the body.

HOW IS CANCER TREATED?

            Cancer treatment depends on the types of cancer, the stage of the cancer, (how much it has spread) age, health status and additional personal characteristics. There is no single treatment for cancer and patients often receive a combination of therapies palliative care.

Treatment usually fall into one f the following categories: SURGERY, RADIATION, CHEMOTHERAPY, IMMUNOTHERAPY, HORMONE THERAPY OR GENETHERAPY.