Shvoong Home > Artes & Humanidades > What is Cancer?

.

What is Cancer?

Summary rating: 5 stars 3 Avaliações
Autor : kakamel
Resumo escrito por : Kakamel
Visitas : 97  palavras: 900   Publicado em: junho 23, 2007
Disordered growth of the cells of the fabrics.  If  doesn''t stop that process, it befalls the destruction of the normal structure and of the function of the organ. The word cancer has origin in Latin, whose meaning is crab.  Has that name, because the sick cells attack and they are infiltrated in the healthy cells as if they were the tentacles of a crab The cancerous cells ace harmful herbs it can be compared, that they disperse in a garden, killing the flowers; if they be not started, the whole garden will be destroyed.  The tumors appear in the organism when the cells begin to grow in an uncontrolled way, in function of a problem in the genes. The cause of that mutation can have three origins: genes that provoke alterations in the sequence of DNA; radiations that break the chromosomes and some virus that introduce in the cells strange DNA. In most of the situations, the healthy cells of the organism impede that these DNA pass the information ahead.  The tumor develops a group of net of blood vessels to stay. Through the current sanguine or lymphatic, the evil cells arrive in other organs, developing the disease in these areas. That process of irradiation of the disease is known as metástase.  
 This disease is so dangerous, because it possesses efficient capacity of reproduction inside of the cells and also because he/she reproduces and it colonizes reserved areas easily to other cells. Several factors that favor the development of the cancer exist. We can mention as main: genetic predisposition (cases in the family), alimentary habits, lifestyle and environmental conditions. All these factors increase a person''s risk it to develop the disease. The tabagismo increases the smoker''s chances in developing cancer in the lungs, in the mouth and in the throat. Alcoholic drink in excess can provoke, with the time, the cancer emergence in the mouth. Sun in excess can affect the cells and it increases the risk of the development of this disease in the skin. Mamma''s cancer has origins in the disturbances hormonais and it is more common in the women. The leukemia (cancer in the blood) it is unchained by the exhibition to radiations. Certain infections can unchain the appearance of tumors in the stomach and in the liver. The stressful life, the inadequate feeding (rich in fats, conservantes and poor in fibers) they are also related the some cancer types. The best treatment is still that that seeks avoid the appearance of the disease. For so much, the specialists advise the people to have a healthy life: natural and rich feeding in fibers, to avoid the tobacco and the alcohol, to have a calm life, escaping from the stress, to use protecting or blocking solar and to do routine exams to detect the beginning of the disease. 
Nowadays, the medicine has the radiotherapy and of surgeries to combat the disease. When it is done necessary the retreat of the tumor, the surgery is the most appropriate procedure. The radiation is already used to kill the cancerous cells. However, this second procedure has collateral effects as, for instance, burns in the skin provoked by the passage of the radiation. The chemotherapy is a procedure that seeks, through the administration of drugs, to impede the reproduction of the cancerous cells, taking them to the death. That procedure also has collateral effects as, for instance, the fall of hair. In the cases of mamma cancer and of prostate the hormonoterapia is used, because these types of tumors are sensitive to the action certain hormones. Does some exist middle of avoiding the cancer?  The best method and to do a complete physical exam 1 or 2 times a year.  It is also very important to communicate immediately to the I medicate the whole symptom out of the common.  The emergence of a pit in any part of the body or the unexpected sangramento of a hole of the body, although they don''t necessarily indicate cancer, they should bor a consultation doctor. 
 


Mais resumos sobre What is Cancer?
What is Cancer?  por  kakamel    2007 
Avalie este resumo : 1 2 3 4 5


Comentários sobre What is Cancer?

Leia resumos gratuitamente - Escreva e ganhe dinheiro

Resuma o conhecimento humano no Shvoong. Junte-se a nós!

------