Metastasis

Metastasis is a complex process that occurs in the human body during the development of tumor or inflammatory diseases. It involves the transfer of pathological material (atypical cells or microbes) from the primary focus of the disease to other organs and tissues, where they can grow and multiply, forming secondary lesions - metastases.

Metastasis is one of the main factors in the development of cancer and other serious diseases. It can occur both in the patient’s body and as a result of the spread of tumor cells to other parts of the body or even to other organisms. As a result of this process, multiple foci of the disease can develop, which can be localized in different parts of the body, which complicates treatment and increases the risk of complications.

During metastasis, abnormal cells can spread through the circulatory system, lymphatic tract, or through body tissues. This can occur with both cancer and certain infectious diseases such as tuberculosis or syphilis.

Treatment of metastasis depends on the type of disease and its stage. In some cases, surgical removal of metastases or radiation therapy may be performed to reduce their size or kill cells. Chemotherapy or immunotherapy may also be used to destroy abnormal cells.

However, metastasis can be a very dangerous and difficult to treat process. Therefore, it is important to carry out early diagnosis and treatment of primary diseases to prevent the development of metastases and reduce the risk of complications.

Metastasis Metastasis is the process of transfer of pathological (tumor) material (cancer cells, lymph, blood, microbes, etc.) from the source of the process (tumor, inflammation, etc.) to other tissues and organs with the formation of secondary, distant foci (metastatic ). This is the result of an imbalance between growth and apoptotic factors, tumor factors and processes, or an inflammatory agent.

*Metastases are usually found in the lungs, liver, lymph nodes and bones.* *Recently, metastasis of certain subpopulations of cells in the kidneys and brain has been described*.

This stage of the disease is called **tumor process.** It is characterized by repeated relapses, and is often incurable. Initially, as a rule, it is treatable, but then it metastasizes and becomes a problem again. At the initial stage of development of the metastatic process, one of the most effective methods for removing tumors is local resection of the tumor, which is accompanied by treatment of adjacent tissues to avoid the spread of metastases.