小细胞肺癌（small cell lung cancer）.docVIP

小细胞肺癌（small cell lung cancer） Type Small cell lung cancer is one of the basic types of lung cancer. It belongs to undifferentiated carcinoma, and its pathological types include oat cell type, intermediate cell type and mixed oat cell type. 1/5 of lung cancer patients belong to this type. Small cell lung cancer is a highly malignant tumor. Its biological behavior is bad and its prognosis is very dangerous. Compared with the same range of dissemination, small cell lung cancer is shorter than other types of lung cancer before diagnosis, and the survival time after diagnosis is also short. Without treatment, the median survival time of small cell lung cancer patients from diagnosis of less than three months, two years survival rate of less than 1%. The onset age is mild, mostly in men, and most of the patients have smoking history. Usually originated from the larger bronchi, mostly central type lung cancer. Small cell carcinoma is characterized by low differentiation, rapid growth, early metastasis of lymph nodes and invasion of blood vessels, and extensive metastasis of blood channels to distant organs of the body. Therefore, the prognosis of small cell carcinoma is the worst among all types of lung cancer. Small cell carcinoma is highly sensitive to radiation therapy and / or anticancer drugs. Treatment generally does not advocate surgery (patients with mediastinal lymph node negative can be considered surgical treatment), with systemic chemotherapy and radiotherapy based. Patients with fever and cough are common symptoms of lung cancer, headache, dizziness, nausea and vomiting, to guard against brain metastases may strongly suggest that the brain CT or MRI examination, the preferred MRI examination, especially MRI high magnetic field strength, can be found in CT and normal / low field MRI is not old find small lesions. classification Small cell lung cancer is divided into a limited duration and a wide range. Most small cell lung cancers have been diagnosed for a wide