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Le Cancer

Le Cancer

Le cancer est une maladie caractérisée par une prolifération cellulaire anormale au sein d’un tissu normal de l’organisme.

Ces cellules dérivent toutes d’un même clone, cellule initiatrice du cancer qui a acquis certaines caractéristiques lui permettant de se diviser indéfiniment et de pouvoir former des métastases.

Un cancer est un terme général pour n’importe quelle maladie pour lesquelles certaines cellules du corps humain se divisent d’une manière incontrôlée.

Les nouvelles cellules résultantes peuvent former une tumeur maligne (un néoplasme) ou se propager à travers le corps.

Quelques types de cancer :

Le cancer du sein
Le cancer du côlon : cancer du côlon, et, proche, celui du rectum
Le myélome multiple : cancer de la moelle osseuse
les leucémies : cancers du sang
Le sarcome de Kaposi : cancer des vaisseaux sanguins
Lymphomes : Maladie de Hodgkin et Lymphome non-hodgkinien


Lung cancer

Lung cancer is a malignant tumour of the lungs. Most commonly it is bronchogenic carcinoma (about 90%). Lung cancer is the most lethal malignant tumour worldwide, causing up to 3 million deaths annually. Only one in ten patients diagnosed with this disease will survive the next five years. Although lung cancer was previously an illness that affected predominately men, the lung cancer rate for women has been increasing in the last few decades, which has been attributed to the rising ratio of female to male smokers.

The incidence of lung cancer is highly correlated with smoking. The above is an illustration for the United States incidence of lung cancer.Current research indicates that the factor with the greatest impact on risk of lung cancer is long-term exposure to inhaled carcinogens. The most common means of such exposure is tobacco smoke.

Treatment and prognosis depend upon the histological type of cancer and the stage (degree of spread). Possible treatment modalities include surgery, chemotherapy, and/or radiotherapy.


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