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由于不能估计出原发病灶的范围以及有无淋巴结转移,故放射剂量常太低,范围小。为得到良好疗效,放疗还必须包括纵膈、锁骨上、颈部等淋巴回流区域的照射。过去还包括上腹部,因外科手术及尸检发现肺癌患者涉及上腹部淋巴结的百分比很高,等于或超过颈部、锁骨上区的转移。放射剂量既要能挖制原发病灶以及淋巴结的病变,但又不能超过正常组织的耐受量。目前控制局部肿瘤病灶的办法有:(1)放射增敏剂。(2)联用化疗药物。(3)应用高能量射线和组织埋置。(4)发热疗法。(6)适当安排放射的时间和剂量。
Since the range of primary lesions and lymph node metastases cannot be estimated, the radiation dose is often too low and the range is small. In order to obtain a good curative effect, radiotherapy must also include irradiation of the lymphatic recirculation region such as mediastinal, supraclavicular, and cervical regions. In the past, it also included the upper abdomen. As a result of surgery and autopsy, the percentage of patients with lung cancer involving upper abdominal lymph nodes was high, equaling or exceeding the metastasis of the neck and supraclavicular region. The dose of radiation must be able to excavate lesions of the primary lesions and lymph nodes, but it must not exceed the tolerance of normal tissues. Current methods for controlling local tumor lesions include: (1) Radiosensitizers. (2) Combination chemotherapy drugs. (3) Application of high energy rays and tissue embedding. (4) fever therapy. (6) Properly arrange the time and dose of radiation.