What is chemotherapy, what is radiation, and what’s the difference?

Surgery

< strong>Radiation

Chemo

are the three major approaches for the treatment of malignant tumors.

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Simply put,chemotherapy is a systemic treatment, administered orally or intravenously, just like if you have pneumonia, take antibiotics or take antibiotics, chemotherapy drugs will enter every part of the body and kill cancer cells all over the body< span>. Therefore, chemotherapy is a systemic treatment method and can be used before surgery to become neoadjuvant chemotherapy. Some patients who are inoperable are converted into patients who can be operated.

Chemo may also be used after surgery, Kill cancer cells that are invisible to the naked eye, because surgery can only remove cancer cells within a certain range. If cancer cells hide in the lymph nodes, blood or other organs of the original tumor, they need to be eliminated by chemotherapy. Chemotherapy can also be used for palliative treatment of advanced tumors. When the tumor recurs or metastasizes to the whole body, chemotherapy is the main treatment method. Chemotherapy is used to kill cancer cells, shrink the tumor and improve the survival rate.

Radiation

Radiation therapy is a local treatment method.Radiation therapy is the use of radioactive isotopes or nuclides to release rays or particles , used to kill cancer cells. Therefore, radiotherapy is a bit similar to surgery. It is a local attack. For some radiotherapy-sensitive tumors, or the location of the tumor is not good, surgical removal is difficult, or the patient is weak and cannot tolerate surgery. , radiotherapy can be considered as an alternative to surgery to kill cancer cells. Radiation therapy can also be used after surgery, as well as surgery, to kill cancer cells that may exist locally and reduce the rate of local recurrence.

To sum up, radiation therapy is a local therapy, chemotherapy is a systemic therapy, and the two methods complement each other. Depending on the patient’s condition, decide which treatment method to use, or use both methods.

Hello everyone, I am Liu Yuansheng, an oncologist. If you have any tumor-related questions, you can consult or ask me any questions. I’ll take the time to answer it for you!