Ung thư phát triển trong cơ thể như thế nào?| BS Phan Trúc, BV Vinmec Times City

#vinmec #cancer #cancer #cancerawareness Human life begins with a single cell. Thousands of cells will form tissues and organs. Each cell surrounds a nucleus containing a genetic machine including chromosomes containing tens of thousands of genes that guide growth, function and division and help your body stay healthy and grow. But cell replication is like a complex dance. When a DNA is damaged, cell division can go off track. Mutations appear and most of them will be corrected by the body's own repair system. But when enough cells accumulate, they will take over, causing cells to divide out of control. The path for cancer cells has been paved. Master, Resident Doctor Phan Truc, Oncologist - Hematologist, Vinmec Times City International General Hospital will explain to you how cancer develops in our bodies through the following video? When genes function normally, they tell cells when it is time to grow and divide. Cells multiply exponentially from 1 original cell into 2 identical daughter cells, then 2 into 4, and so on. After going through a number of divisions, cells gradually differentiate to form different tissues/organs, lose the ability to divide and then die according to a pre-established program. The creation and death of cells in the body is kept at a stable rate, ensuring healthy development of the body. But cancer cells are different. Over time, when exposed to external environmental factors such as cigarette smoke, alcohol or ultraviolet (UV) radiation from the sun,... on the genetic background of each individual, it leads to "errors" in the process of gene replication. This turns the affected cells into malignant cells with the characteristics of unlimited proliferation and loss of the ability to die according to the programmed program. In theory, all cells that are capable of dividing are at risk of cancer. Mutated genes act as an invader that controls and deviates from normal instructions and causes cells to grow abnormally and out of control. This is an extremely capable enemy in the body. They can avoid the immune system and ignore requests to stop dividing or die. At the same time, these abnormal cells can acquire “super special” characteristics by breaking away from their original location, living independently and moving around the body. When cancer cells divide, a tumor will develop and grow. Cancer cells have the same needs as normal cells. When they are a child, they will take oxygen and nutrients from the surrounding blood vessels to survive and grow. But as a tumor matures, it needs more blood to supply it with oxygen and other nutrients. So cancer cells send signals to a tumor to create new blood vessels. This is called angiogenesis and is one of the reasons tumors grow and get larger. This activity also allows cancer cells to enter the bloodstream and spread more easily to other parts of the body. Cancer cells invade and assimilate their enemies by luring normal cells to the tumor and sending out signals that disrupt normal cells and tissues. Cancer can also spread from where it originates to other parts of the body. This process is called metastasis. Cancer cells can metastasize when they break away from the tumor and travel to a new location in the body through the blood or lymph system. If the tumor is in the early stage, growing locally, surgical intervention or radiotherapy may be the optimal choice with the hope of a cure. But once the cancer cells expand and occupy all the roads like leukemia, using drugs (chemotherapy, immunotherapy, targeted therapy, etc.) is almost the foundation for control. Radiotherapy and chemotherapy are ways to shred the DNA of cells or disrupt their replication function. Many drugs affect the cell division cycle, so tumors that proliferate rapidly also have a higher chance of responding to drugs. Because they are not specific to malignant cells, tissues and organs in the body that proliferate rapidly will also be affected by these treatments. Typical examples include skin, oral mucosa, digestive tract, hair with symptoms such as hair loss, mouth ulcers, diarrhea... Subscribe to follow the latest health videos at:    / @vinmechospital   Contact Vinmec: Fanpage:   / vinmec   Website: https://www.vinmec.com TikTok:   / benhvienvinmec   Vinmec Hospital System nationwide: https://vinmec.com/vi/danh-sach/ca-nu... ----------------------- Copyright by Vinmec Copyright by Vinmec ☞ Do not Reup