March 10th, 2010
The symptoms of lung cancer does not usually appear in the early stages of lung cancer but arise when it has already spread too much to increase the chance of cure. In fact, since that occurs the first malignant cell until a person consult a doctor first before symptoms of the disease can take many years.
Among the most common symptoms are:
- Persistent cough.
- Chest pain that increases with breathing.
- Loss of weight and appetite.
- Shortness of breath.
- Wheezing or whistling.
- Spitting up blood or redness (mucus).
Tags: Lung cancer, malignant cell, stages of lung cancer, Symptoms Of Lung Cancer
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March 9th, 2010
Lung cancer accounts for 13.4% of new cancer casesand is the most common cause of cancer mortality, is the most common in the developed world. In Spain, lung cancer is the cause of death of 8.3% of the Spanish (1 in 12 men die from lung cancer in Spain) and 1.3% of women. More people die due to lung cancer than breast cancer, colon and prostate cancers combined. Specifically in our country are diagnosed 19,000 new cases of lung cancer each year.
The number of men who die of this cancer are declining in North America because there are more quitters.
The American woman has grown since 1950, mortality for this cancer, by 550%. This proportion is lower in Spain because she belatedly started smoking more generally.
In the UK and the U.S., lung cancer causes more deaths than breast cancer since 1987. In North America, 150,000 women die each year from diseases related to snuff, of these 41,000, die from lung cancer and 10,000 for other cancers. This year there will be about 169,000 new cases of lung cancer deaths.
The survival rate at one year (time during which no disease) in 1995, is 41%. This percentage fell to 14% when it comes to five-year survival. This rate increases to 42% if the cancer is detected early.
90% of people with this disease are smokers, while only 5-10% of smokers with cancer, your chances of developing the disease are fifteen times higher than in nonsmokers.
Tags: cases of lung cancer, common cause of cancer mortality, Lung cancer, lung cancer is the cause of death, new cancer cases, Statistic Of Lung Cancer
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March 8th, 2010
The classification of small cell lung tumors is much simpler. In this type of cancer is spoken of limited stage and extensive stage.
The limited stage means that the tumor is confined to the hemithorax of origin, the mediastinum and supraclavicular nodes. This would be tolerable in the employment field of radiotherapy.
The extended period is one in which the cancer is too widespread to be included within the definition of limited stage, ie the cancer has spread to other lung, to lymph nodes in the other breast to distant organs, and so on.
Patients with limited stage of cancer may be effectively treated with radiation therapy. In those with extensive stage is not as applicable radiotherapy.
Tags: classification of small cell lung tumors, Lung cancer, radiation therapy, Small Cell Lung Cancer, Staging of Small Cell Lung Cancer, type of cancer
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March 6th, 2010
The non-small lung cancers are classified into several stages or phases following a fairly complex system known by the acronym TNM. The staging of the tumor is very important because it can, first, to distinguish patients cured of which are not and, secondly, to calculate the probability of being cured.
The T refers to tumor size. It is classified between T1 and T4, as the more bulky tumor affecting nearby structures or important as the main bronchi, arteries, or the heart itself.
The N indicates whether or not they affected the nearby lymph nodes. N0 means that they are not. The lymph node involvement is an important prognostic factor that graduates from N1 to N3. In particular it is vital to know whether or not invaded most central nodes of the thorax, a region known as the mediastinum. In general, involvement of the mediastinum means the tumor is inoperable.
M indicates if no metastasis (M0) or, conversely, if the cancer has already branched out to distant organs (M1).
Tags: cancer, non-small lung cancers, Stage Of Non-small Lung Cancer, staging of the tumor
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March 5th, 2010
Lung cancer is classified by the type of cell that produces the tumor. 90% are small cell or non-small cell. The remaining 10% is composed of very rare types such as mixed carcinoid or neuroendocrine tumors.
Furthermore, the lung is a very frequent metastasis. But these are not true tumors of the lung, but plantings of cancers of other organs, such as the breast or intestine.
Small Lung Cancer Cell (microcytic)
It is named after the cell size view microscope. It is almost invariably associated with smoking and it is estimated that about 20% of all cancers are small cell. They multiply rapidly and can form large tumors, plus their ability to spread to other organs is increased. The small cell is almost always a very aggressive tumor.
Metastases tend to affect the following organs: lymph nodes, bone, brain, adrenal glands and liver. The primary tumor usually originates near the bronchi and spreads into the center of the lungs.
Non-small Lung Cancer Cell
This cancer accounts for almost 80% of all lung cancers. It spreads more slowly than small cell and occasionally may occur in nonsmokers.
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Tags: Lung cancer, neuroendocrine tumors, Non-small Lung Cancer Cell, Small Lung Cancer Cell, tumors of the lung, Types Of Lung Cancer
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March 4th, 2010
Nicotine potentiates the carcinogenic effect of other substances from smoke snuff and the effects of carcinogens in the environment.
Nicotine acts on the mechanism of apoptosis, or cell death, preventing the cells to commit suicide. When it comes to cancer cells does the same thing which causes or encourages the formation of lung cancer.
In addition to snuff, there are other substances mentioned above which are listed now:
Asbestos: people who work with asbestos are seven times more likely to develop cancer than those who do not maintain contact with it. These people have a type of cancer called mesothelioma, which occurs in the pleura. In recent years, governments have banned the use of this material for commercial and industrial products. When combined with asbestos exposure to smoking, it increases their chances of getting cancer from 50 to 90 times.
Cancer-causing agents in the workplace: an occupational risk group are the miners. They work with materials that, when inhaled, can damage your lungs. Such substances are radioactive minerals such as uranium, and workers exposed to chemicals such as arsenic, vinyl chloride, nickel chromates, coal based products, mustard gas and chloromethyl ethers. People working in these conditions should be careful to avoid exposure to these agents.
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Tags: asbestos exposure, cancer cells, effects of carcinogens, formation of lung cancer, growth of cancer cells, Lung cancer, mesothelioma, Nicotine, Risk Factors of Lung Cancer
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March 3rd, 2010
The snuff smoking is the main cause in 90% of cases of lung cancer in both men and women. Decades ago, this tumor was much less common in women and it was featured it was more likely that was not related to snuff. These differences are disappearing rapidly, reflecting the incorporation of women with smoking in the previous years.
Another part of this type of cancer is caused by inhaled substances and who are in the workplace, a phenomenon related to the 10% -15% of lung cancer in males and 5% in women. The most important of these substances are asbestos, such as those used in asbestos factories.
Lung cancer can also be caused by radiation received at the chest, such as treatment with radiation therapy used to treat breast cancer and lymphoma. The interval between radiation exposure and cancer onset is usually very long, around age 20. The greatest risk are people who tried for many years with old appliances, and smoked during the following years. The risk with modern radiotherapy equipment is very low.
Hereditary factors have little relation to lung cancer.
Tags: asbestos, cancer, cases of lung cancer, Causes of Lung Cancer, Lung cancer, lung cancer in males, snuff smoking, treatment with radiation therapy, tumor, type of cancer
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March 2nd, 2010
The lungs are two spongy organs and lightweight, the largest in the body, which are located in the thoracic cavity, the two are not exactly alike.
The right lung is larger than the left, this is because the heart is located there. The right lung is divided into three parts, called lobes, and left in two.
The lungs are covered by a membrane that protects and gives elasticity to facilitate their movement, called the pleura. There are various structures in and out of the lungs and performing different functions.
Through movement of the chest bellows, the lungs breathe in the ambient air to remove atmospheric oxygen and expel the air inside the lungs to remove carbon dioxide and carbon dioxide (CO2). Inspired air passes through the larynx and trachea where it is distributed through the bronchi to the lungs.
The trachea, which carries oxygen from the mouth and nostrils, at the height of the lungs are divided into two pipes or tubes are bronchi.
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Tags: About Lungs, bronchioles, lungs, pleura, right lung, trachea
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March 1st, 2010
Cells are the smallest living units of the human body. One function is to reproduce and die when no longer useful. This process is very neat, in time and space, so there is always that allows the appropriate number of cells for each stage of life.
When this multiplication of cells occurs in an uncontrolled manner, forming lumps. These masses are called tumors.
There may be benign and malignant tumors. Benign tumors are those that do not spread to other areas and do not compromise a person’s life.
Malignant tumors often spread to other parts of the body and cause damage to body tissues and organs and can even cause death of the person.
Malignant cells can move through the lymph or blood and reach anywhere in the body causing a second tumor, called metastatic, because it is the first originated.
Lung cancer is an abnormal growth of lung cells. The disease usually occurs on the inner walls of the bronchi, and growing up can obstruct the airway and impair breathing. For this reason, generally produces shortness of breath, breathlessness and fatigue.
There are two main types of lung cancer: small cell cancer or small cell and non small cell cancer (non small or bronchogenic).
Tags: Cells, Lung cancer, Malignant cells, Malignant tumors, non small cell cancer, small cell cancer, Types Of Lung Cancer
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