Cancer prevalence in the world
Oncology / / August 12, 2017
On the globe there is no country which would not register the tumor.More than half the world's population lives in countries in which the cancer is a major problem of national health care.However, the uneven spread of the tumor due to various circumstances.
United Nations conditionally divides countries into developed and developing, depending on the degree of socio-economic development.In developed countries realized the sinister role and importance of this problem, in developing countries it is obscured by other concerns, the lack of statistics, personnel, etc.
It is known that cancer -.. Disease primarily of the second half of life.To express an opinion about the rejuvenation of cancer today is not supported by the facts.The death rate from lung cancer among 70-year-old women in Denmark is higher than among 50-year-olds, 50-year, 6.7 times, and among 40-year - 20 times.One can cite many similar examples and evidence.Of course there are tumors that occur only in childhood (nephroblastoma), or more
Naturally, in Asia, Africa and Latin America, where the average life expectancy of less than 30 years, the incidence of cancer is not as noticeable.The fight against infectious diseases, to quickly improve in relation to social change in the former colonial countries, will lead to a marked increase in life expectancy, and therefore increase the number of people for whom the risk of cancer is more significant.
«Infectious past 'developing countries imposes certain imprint on the health of their population (an immunosuppressive condition, hepatitis and cirrhosis of the liver, sores and so on. D.) That can affect cancer growth or even be the cause of" overtaking "incidence indicatorsdeveloped countries.According to Burkitt's concept, immunosuppression caused by the malaria parasite, is an important pathogenic factor in the development of lymphoma, affecting children in Uganda, Kenya and other African countries.
lengthening life expectancy increases the likelihood of exposure of different carcinogenic effects.Rapid industrialization, for example, in China, is not accompanied by the necessary hygiene measures.On the markets of many countries supplied products, often banned because of carcinogenicity in producing countries.Strong advertising of cigarettes led to the fact that the majority of young people smoking in many African and Asian countries.
All these provisions urge experts in the future growth of the importance of the problem of cancer in developing countries.This does not mean that the issue is not important for these countries now.
In Senegal a proportional ratio of infectious diseases and cancer is 8: 1 and the ratio of deaths from infectious diseases and cancer - 3: 1.It is known that diseases associated with eating disorders are very common in developing countries.However, the same ratio Senegal mortality from eating disorders and mortality from cancer is 1: 1.Of the 100 patients with infectious diseases in this country dies from 20 to 30 people, and from 100 cancer patients - 90. In Nigeria, almost 50% of surgical beds occupied by cancer patients.
incidence of malignant tumors occurring at a young age is even higher in developing countries than in developed ones.For example, horionepitelioma uterus unusually common in the Philippines, Malaysia, Indonesia.In India, the average age of onset of cervical cancer by 10 years less than in developed countries.In Colombia marked the world's highest incidence of cancer among women.
peculiarity of cancer patterns in Africa is the high incidence of liver cancer.In Cameroon, the frequency of this cancer is 24 times higher than in European countries.Increased incidence of liver cancer in Southeast Asia.There is reason to believe that in this form of cancer etiology importance belongs to aflatoxins.Cleaning of food from fungi that reproduce in a hot and humid climate - no easy task and requires a lot of governmental and social efforts.Peanuts, especially frequently contaminated with aflatoxins, is the most important or even the only export product of some countries.Failure to produce it could seriously undermine the economies of developing countries.
In the Middle East is very common bilharzia.The consequence of this parasitic disease is a special form of bladder cancer.Poor cure and late diagnosed cancer of the bladder option delivers many health concerns Egypt, Iraq, Sudan.
Skin cancer at the site of parasitic ulcers, Kaposi's sarcoma, Burkitt's lymphoma determine the originality of the structure of cancer in Africa.
in India, Bangladesh, Thailand, Sri Lanka and other densely populated developing countries in Asia is relatively high incidence of cancer of the oral cavity.This well established etiological role of chewing betel nut and tobacco.However, the fight against this harmful habit is very difficult.Chewing betel - traditional, centuries-established habit.Hindus, for example, believe that the betel satisfies hunger, promotes hygienic maintenance of the oral cavity, prevents tooth decay.Many people are not afraid of the risk of cancer in 15-20 years after the start of chewing.In addition, in order betel leaves and tobacco are important components of individual countries' exports.
very difficult in the absence of adequate statistics to accurately assess the significance of the problem of cancer in developing countries.In South-East Asia, 70% of opinions about death are written not by health professionals.Due to lack of funds and human resources in developing countries, they are used primarily to deal with acute infectious diseases.There is almost no cancer centers, and more than 90% of cancer patients come to the doctor in the late stages of the disease.In 19 African countries do not have the equipment for radiation treatment, are experiencing serious difficulties in the provision of chemotherapy drugs.
Discoveries in the field of carcinogenesis will allow to take reasonable measures for the prevention of cancer.These approaches are promising in our time.Stopping smoking may result in cancer reduction of 30-40%.Extremely convincing figures on the ratio of smokers and non smokers people: among the dead from lung cancer -10.8, from the floor of the mouth cancer - 4.0, from 5.4 larynx cancer.
Recently a lot of talk about the fact that 80% of all human cancers are caused by carcinogenic factors in the environment.For all clear that the reduction in the use of carcinogens will reduce the incidence of cancer.However, it is extremely hardly feasible task.People live in a complex industrial society, crowded substances never before produced in nature.50,000 chemicals produced by industry, every year the list grows by 1,000 new.There are more than 2 million. Chemical compounds, only a few thousand of them studied in the carcinogenic activity.
Modern cancer treatments (surgery, radiation therapy, combination chemotherapy) can achieve cure rates in developed countries, 35% of patients (excluding skin cancer).Patients recover the cost of losing a vital organ (eg, lung, stomach or rectal) or after massive irradiation, or many months cytostatic chemotherapy.Life expectancy of cured cancer patients not comparable with those of the healthy population.Part of a secondary tumor, possibly due to the fact that the continuing effects of causal factors, or due to the carcinogenic effects of therapeutic interventions.Besides, everyone understands that human vitality without a lung or stomach, or half of the large intestine is considerably weakened.It is obvious that a lot of work on the creation of new methods of treatment, renovation and upgrading of traditional therapies.Mutilation, toxic therapy, late diagnosis will remain merely a pretext for the memories and stories to our descendants of the former helplessness of doctors.