How to perform radiotherapy for ovarian cancer

Ovarian cancer is a very common gynecological malignancy. The main treatment is surgery. However, surgery cannot completely ensure the success of ovarian cancer. The cure rate is not very high. Therefore, enough attention should be paid to the treatment of ovarian cancer. Prevention is the best approach. So how should radiotherapy for ovarian cancer be performed?

The radiosensitivity of ovarian malignant tumors varies greatly. Ovarian endodermal sinus tumor, immature teratoma, and embryonal carcinoma are the least sensitive, ovarian epithelial carcinoma and granulosa cell carcinoma are moderately sensitive, and dysgerminoma is the most sensitive. Most tumors can be controlled by radiotherapy after surgery.

Since ovarian cancer metastasizes to the abdominal cavity early, the irradiation range includes the abdominal cavity and pelvic cavity. The liver and kidney areas are protected to avoid radiation damage. The radiation dose for the entire abdominal cavity is 3000cGY~5000cGY/6~8 weeks.

Internal irradiation refers to the injection of gold (198AU) or phosphorus (32P) into the abdominal cavity, which can make the abdominal surface reach a dose that is difficult to reach with external irradiation. Due to its limited penetration, it can be used to treat superficial metastases in the abdominal cavity, residual tumors under the microscope, or ruptured stage I tumors during surgery to improve the five-year survival rate. The disadvantage is that the abdominal cavity must be free of adhesions to ensure that the radioactive isotopes are evenly distributed, otherwise it can cause intestinal damage and cause serious consequences. Generally, the amount of 198AU is 120 to 150 millicuries, and the amount of 32P is 10 to 20 millicuries.

Although the cause of ovarian cancer is not very clear, there are some ways to reduce the incidence of ovarian cancer, such as actively treating ovarian diseases, or paying attention to physical exercise in daily life. You can also take care of your ovaries, but the method must be formal.