What is a tumor classification?

The tumor is an abnormal tissue growth that does not have a physiological function. Tumors are caused by rapid uncontrolled cell division, which is constantly expanding without treatment. Tumor classification is a system designed by the scientific and medical community that allows practitioners to identify, diagnose and treat tumors. Benign tumors are slowly growing, non -lawn and located, which means that they have attacked other tissues. Tyto růst lze obvykle odstranit a nevrátí se. Benign tumors can cause serious problems, depending on their size and location, and some, such as polyps in the large intestine, may become cancer if they are not removed. Cancer cells can also break away from the tumors and get into the blood or lymphatic, the spread of the disease to other places in the body. Malignant tumors require fast and specific treatment, so they are the primary focus of the tumor classification.

There is no NESClear tumor classification system. Suddenly, the tumors were classified according to how they appeared under the microscope; Other systems have evolved based on where the growth and type of tissue that was most similar. Since scientific progress has allowed doctors to observe various cellular and molecular properties of different tumors, new tumor classification systems have appeared. As a result of these changes, one type of tumor may have multiple names, while two different tumors can have the same name. If the patient is diagnosed with a tumor, it is important not only to know the name given by the pathologist, but also what the production or name is used.

The second part of the tumor classification is a sorting scale that describes the aggressiveness and malignancy of the tumor. Most sorting degrees ranges from I to IV, with class I describe a tumor that slowly grows and consists of relatively normal cells. Grade II is the window sill slowly grows with slightly abnormal cells and can be repeated after removal. Grade III is bindMore and relate to more active malignant tumors that attack close tissues. Grade IV tumors are the most critical and are made of fast growing, highly invasive malignant cells.

The tumor classification system also varies between different types of cancer. For example, brain tumors are now generally classified according to a system recently designed by the World Health Organization (WHO). This system classifies the tumor with the type of cells present where the tumor was created and the biological behavior of these cells.

Classification of tumors for ovarian tumors depends on Whethjs Benign or malignant and the type of cell in which the tumor originated. Tumors that begin on the ovary surface are called epithelial tumors. Those who start in cells that produce eggs are called germ cell tumors, and tumors that begin in cells that produce hormones are called string tumors.