Introduce all aspects of cancer radiotherapy 1. Different sensitivity to radiotherapy of cancer
(1) radiation-sensitive cancer: seminoma, Wilms (Vail Williams) tumor, neuroblastoma, Hodgkin's lymphoma.
(2) moderately sensitive to radiation therapy of cancer: skin cancer, cervical cancer, head and neck squamous cell carcinoma, breast cancer , ovarian cancer, retinoblastoma, Ewing's tumor, laryngeal cancer, bladder cancer.
(3) is not sensitive to radiation therapy of cancer: lung cancer , glioma, osteosarcoma, malignant melanoma, soft tissue sarcoma, thyroid cancer and lymph node cancer.
Introduce all aspects of cancer radiotherapy 2. The basic principles of radiation possible anti-cancer tissue and normal tissue as possible to reduce radiation damage is the basic principle must be followed. Therefore, cancer tissue and normal tissue is often no clear dividing line, as during radiotherapy of cancer, you can not completely avoid the surrounding normal tissue or cancer, must be part of the surrounding normal tissue included, so when some of these complications during radiotherapy difficult to avoid. For example, in advanced prostate cancer radiotherapy, may cause damage to the rectum and bladder; radiotherapy of intracranial tumors, the necessity part of the normal brain tissue damage.
Introduce all aspects of cancer radiotherapy 3. Radiotherapy radiotherapy according to the purpose of the classification can be divided into radical radiotherapy, palliative radiotherapy and surgery-related and complementary radiotherapy.
(1) radical radiotherapy: The purpose is cured by radiation therapy to cancer.
(2) palliative radiotherapy: radiation therapy can also be used as a means of palliative treatment of cancer, such as pain, ease the pressure on vascular tumor, treatment of superior vena cava syndrome. Palliative radiotherapy can control local symptoms of cancer, relieve patient suffering. Most clinical application of bone metastasis of cancer to control local pain.
(3) adjuvant radiotherapy: most comprehensive treatment as a means of cancer can be carried out before surgery, as preoperative radiotherapy; also after the surgery, known as radiotherapy. Adjuvant radiation therapy is a complementary treatment, a common clinical cancer including breast cancer, esophageal cancer, lung cancer, rectal cancer, kidney cancer, etc., under the appropriate indications for radiotherapy radiotherapy can reduce the chance of local recurrence. On the radiation-sensitive cancers, such as testicular germ cell tumors, ovarian germ cell tumors of radiation, not only can reduce the local recurrence rate, but also improve survival.