Radiation Therapy
First, the treatment principle
Radiotherapy is the best in small cell carcinoma, squamous cell carcinoma, the worst adenocarcinoma. However, small cell carcinoma is easily metastasis, so many large-area irregular wild uses, the irradiation area should include primary stoves, longitudinal bilateral clavicle, or even liver brain, etc., while supplemented by drug treatment. Squamous cell carcinoma is sensitive to rays, and the lesions are mainly affected, and the transfer is relatively slow, so the use of radical treatment. Adenocarcinoma is poorly sensitive to rays, and it is easy to transfer, so fewer radiotherapy.
Second, radiation side effects
There are many complications, even cause loss of partial function; for advanced tumor patients, radiotherapy effect is not good. At the same time, the patient's physical fitness is poor, and the age is not suitable for radiotherapy.
Third, the adaptation of radiotherapy
According to the purpose of treatment, score treatment, palliative treatment, preoperative radiotherapy, postoperative radiotherapy and inner radiotherapy.
1. Root treatment
1) Early cases of surgical taboo or reject surgery, or lesion ranges limit at 150 cm IIIA case;
2) Heart, lung, liver, kidney function is basically normal, blood white blood cell count is greater than 3 × 10 ^ 9 / L, hemoglobin is greater than 100g / L;
3) KS ≥ 60 points must be carefully developed carefully, strictly implement, do not change the treatment plan, even if there is a radiation reaction, it should be targeted by root tumors.
2. Palliative care
Its purpose is very different. There is a palliative treatment close to the treatment to alleviate the patient's pain, extend life, improve the quality of life; there is only the symptoms of life, or even cause comfort, such as pain, paralysis, coma, anger and bleeding. The number of illuminated times of palliative treatment can be determined from several tens of times, and should be determined according to the specific circumstances and equipment conditions. However, the treatment plan can be modified as appropriate, when the patient does not increase the patient's suffering, when the treatment has a large radiation reaction or the KS score dropped, the treatment plan can be modified as appropriate.
3. Surgical radiotherapy
It is designed to improve the surgery resection, reduce the risk of tumor spread in intraoperative surgery, and patients with no difficulty in estimating surgery, less divided radiotherapy; such as tumors huge or inverse, it is estimated that surgery is difficult to use. Conventional separation radiotherapy. Radiotherapy is generally less than 50 days from the operation time, and it is not allowed for more than three months.
4. Surgical radiotherapy
Used in preoperative estimation, surgery resection of tumor is not thorough. Silver clips should be placed on a local residual leather to accurately position when radiotherapy.
5. Short-distance radiotherapy in the cavity
It is suitable for use in the cementation of the large bronchi, which can be placed at a bronchial lesions by a back-mounting technique, and the treatment effect can be improved by iridium (192IR) with ruthenium (192IR).
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