Cancer is triggered by a significant cause of death globally by transforming normal cells into tumor cells. These changes are linked to genetic factors or external agents.
Definition of cancer
– Classification and definition of cancer
– Definition of cancer: the proliferation of an abnormal cell
We often speak of cancer in the singular. In itself, this word is symbolically heavy with meaning. In reality, there is not one but many cancers, each with its specificities and variable prognosis. Nevertheless, here is a definition of cancer common to all types.
Classification and definition of cancers
The types of cancer are very numerous, but it is possible to establish a particular classification according to whether they are:
– tumors such as a nodule, cyst, cancerous polyp, or adenoma;
– malignant tumors such as metastasis.
According to their extent and virulence, they can then be classified by cancer stage.
Classification of cancers by area
More simply, cancer can be designated according to the area it affects:
– stomach cancer;
– cancer of the liver;
– esophageal cancer;
– lung cancer;
– Thyroid cancer;
– prostate cancer;
– bladder cancer;
– biliary tract cancer.
Definition of cancers according to the affected tissue
It is also possible to classify cancers according to the tissue involved:
– supporting tissue cancers are sarcomas:
◦ if they affect the muscles, they are myosarcomas;
◦ if they affect the bones, they are osteosarcomas;
◦ if they involve the cartilage, they are chondrosarcomas, etc. ;