Several commonly used radiotherapy regimens for cervical cancer

Cervical cancer is one of the most common malignant tumors in women. Currently, the treatment options are mainly surgery, chemotherapy, radiotherapy and traditional Chinese medicine. The purpose of radiotherapy is to control local lesions and treat lesions in the pelvic lymph nodes and paracervical tissues.

Radiotherapy mainly includes two forms: intracavitary irradiation and external irradiation. Palliative radiotherapy can also be performed for patients with advanced, metastatic or recurrent cervical cancer.

Intracavitary irradiation can be performed using fractionated radium therapy, with intracavitary radiotherapy performed once a week, a total of 4 to 5 times, each time lasting 20 to 24 hours. The specific dose still depends on the tumor size, pathological type, vaginal elasticity, and treatment response.

The main purpose of external irradiation is to control the metastasis of parauterine pelvic wall tissue and pelvic lymph node area to supplement the deficiency of intracavitary irradiation.

Except for patients with cervical carcinoma in situ and stage IIa to IIb, who can receive simple intracavitary irradiation, the rest should be supplemented with external irradiation, with a general dose of 40 to 50 Gy.

For patients with advanced pelvic lesions, extrapelvic metastasis, postoperative recurrence, and other conditions with no hope of radical cure, palliative radiotherapy can be used to improve symptoms and prolong survival. ① Hemostasis: intracavitary postloading, 10-20Gy/2-4 times at point A. ② Pain relief: 60CO or accelerator irradiation, 3 times a week, 3-4Gy each time, total dose 30Gy. ③ Improve pelvic lesions: Anterior and posterior field full pelvic irradiation, multi-field cross irradiation, rotation or pendulum irradiation, etc. can be used. Generally, the total dose of the pelvic center does not exceed 60Gy/week.