Cancer is one of the leading causes of death in developed countries

January 22, 2006 by  
Filed under CANCER

1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)

Cancer is a class of diseases or disorders characterized by uncontrolled division of cells and the ability of these cells to invade other tissues, either by direct growth into adjacent tissue through invasion or by implantation into distant sites by metastasis. This unregulated growth is caused by damage to DNA, resulting in mutations to genes that control cell division. Several mutations may be required to transform a normal cell into a malignant cell. These mutations are often caused by chemicals or physical agents called carcinogens. Some mutations occur spontaneously, or they can be inherited as germ line mutations.

Cancer can cause many different symptoms, depending on the site and character of the malignancy and whether there is metastasis. Cancer may be painless. A definitive diagnosis usually requires the histologic examination of tissue by a pathologist. This tissue is obtained by biopsy or surgery. Once diagnosed, cancer is usually treated with surgery, chemotherapy, or radiotherapy.

If untreated, cancers may eventually cause death. Cancer is mainly a disease of later years, and is one of the leading causes of death in developed countries. Most cancers can be treated and many cured, especially if treatment begins early. Many forms of cancer are associated with exposure to environmental factors, such as tobacco smoking, alcohol, and certain viruses. Some of these can be avoidable, and public health and vaccination programmes are important on a global scale.


Related Posts with Thumbnails
Print Friendly, PDF & Email
  • Winsor Pilates

Speak Your Mind

Tell us what you're thinking...
and oh, if you want a pic to show with your comment, go get a gravatar!


Random Battling For Health Products From Our Store

NOTE: The contents in this blog are for informational purposes only, and should not be construed as medical advice, diagnosis, treatment or a substitute for professional care. Always seek the advice of your physician or other qualified health professional before making changes to any existing treatment or program. Some of the information presented in this blog may already be out of date.

Read previous post:
Multiple Sclerosis is a chronic disease

Multiple sclerosis (MS) is a chronic disease that affects the brain and spinal cord. MS can cause a variety of...