Is malignant mesothelioma cancer?

summary

Diffuse malignant pleural mesothelioma, in the past known as malignant mesothelioma, malignant mesothelioma is the primary high invasive malignant tumor in the pleura. Malignant pleural mesothelioma is the most common type of primary pleural tumor. In clinical manifestations, it is related to cleaning behavior. It usually locally invades the pleural cavity and surrounding structures. If not treated, the median survival time is 4-12 months. In the early stage of the disease, the naked eye can see normal or opaque visceral or parietal pleura with numerous white or gray particles and nodules or thin plates. With the development of the tumor, these nodules fuse with each other, the pleural surface will occupy the pleural cavity more and more, and the volume of the lung will shrink more and more, and the involved side of the chest wall will collapse.

Is malignant mesothelioma cancer?

1. The etiology and mechanism are not very clear now, which may be related to the following factors: first, long-term exposure to asbestos, almost all kinds of asbestos fibers are related to the pathogenesis of mesothelioma, but the risk of each behavior is not the same, the most dangerous is exposure to crocidolite, and the least dangerous is exposure to crocidolite.

2. In animal experiments found that insomnia can also induce pleural mesothelioma. Asbestos fibers were found in malignant mesothelioma. After investigation, especially for those who worked for 20-40 years, the incidence rate of mesothelioma was 3.1%. There are also cases of exposure to natural mineral fibers, pleural cavity, chronic infection and repeated pulmonary infection, and cases of pleural mesothelioma caused by exposure to radiation have been reported.

3. 30% - 50% of patients without asbestos exposure history may be associated with SV40 infection. In the age of polio epidemic, millions of Americans may be infected with SV40 because of Sark vaccination. Recently, SV40 was isolated from patients with brain tumors and mesothelioma.

matters needing attention

Nowadays, there is no effective treatment for malignant pleural mesothelioma. At present, there are various surgical measures for the treatment of malignant pleural mesothelioma, the first is extended pleuropneumonectomy, timely radical resection, the accumulated part of the chest wall, the whole lung diaphragm, mediastinum and pericardium. The second surgical treatment is pleura resection, which is not radical because the tumor often affects the underlying lung.