肺癌

Of lung cancer often occurs in the bronchial mucosa also known as bronchogenic carcinoma. Of lung cancer generally refers to the substance of the Ministry of lung cancer, often do not contain other pleural mesodermal origin of tumor (mesothelioma), or malignant lymphoma (malignant lymphoma), other malignant tumors such as carcinoid tumors (carcinoid), or transfer from other tumors. Therefore, we are talking about lung cancer, the following is defined as from the bronchi (bronchial) or bronchioles (bronchiolar) epithelial cells (epithelial cell) malignant tumor, accounting for 90-95% of lung malignancies in real terms.
Lung cancer is the world's highest rate of cancer death in 1995, the world's approximately 60 million people died of lung cancer, and every year on the rise. Can not be underestimated is that the incidence of female lung cancer increased year by year. Multiple lung cancer at 40 years of age, the peak age of onset of 60 to 79 years old. Male and female prevalence rate of 2.3:1. Race, family history and smoking on the incidence of lung cancer implications.
Lung cancer originated in the bronchial mucosa epithelium confined within the basement membrane were called in situ cancer, may apply to the bronchial cavity or / and adjacent lung tissue growth and can be the blood line or through the lymphatic spread of bronchial metastasis. Carcinoid tumor growth rate and metastasis of carcinoma proliferation situation and the histological type of differentiation of biological characteristics such as a certain extent.
The distribution of lung cancer than the right lung left lung, upper lobe rather than under the leaves, from the main bronchi to the bronchioles cancer can occur. Originated in the main bronchus lobe bronchus for lung cancer were referred to as a central location close to the hilar type lung cancer; originated in the segmental bronchi of lung cancer in the following locations around the part of those in the lungs is called peripheral lung cancer.
There are two basic types of lung cancer:
A) small-cell lung cancer (SCLC) or oat cell type, one-third belong to this type of lung cancer patients;
Small cell lung cancer (SCLC) tumor cell doubling time is short, rapid development, often accompanied by endocrine abnormalities, or carcinoid syndrome; due to occur in patients with early stage hematogenous metastasis and sensitivity to the chemotherapy, so the treatment of small cell lung cancer to systemic chemotherapy should be the main , combined with radiotherapy and surgery as the main treatment. Comprehensive Therapy treatment of small cell lung cancer, the key to success.
2) non-small cell lung cancer (NSCLC) class, one-third of lung cancer patients fall into this category. This distinction is important, because these two types of lung cancer treatment programs are completely different. Is mainly used in patients with small cell lung cancer chemotherapy treatment. This type of surgical treatment on patients with lung cancer does not play a major role. On the other hand, surgical treatment is mainly applied in patients with non-small cell lung cancer. There is also a type of cancer is argyrophil cell tumors.