Mesothelioma (mesothelioma; synonym: a resistive cancer, celitelya, studied endothelioma, endothelial cancer, Sarmatskaya endothelioma, lymphangiectasia) is a malignant tumor originating from mesothelial (see). Mesothelioma is most often found in the pleura, less often in the pericardium, the peritoneum. Grows usually diffuse, spreading on the serous membranes; the tumor site often does not form. Macroscopically serous sheets thickened up to several centimeters, the fibrous form, sometimes with pockets of collapse. Expanding ekzotichna, mesothelioma takes the form of papillary ridges. Serous cavity can be performed tumor tissue, often contains serous or hemorrhagic fluid. M has no tendency to deeply investirovat underlying tissues. So, for example, M. pleura grows magdalsophia partitions only subpleural area, not spread to the lung tissues. According to some authors, mesothelioma is more likely to spread to regional lymph nodes, brain, bones, adrenal glands; according to other data, metastases are extremely rare.
Microscopically, there are several options M. More common epiteliopatia with cubic Meters, flattened or irregular cells growing solidly, or forming tubes. Polimorfnoyadernah mesothelioma is diverse cellular forms. Describe M veretenoobraznaya, angiomatoid. To differentiate M. follows with metastatic tumors because serous membranes are often the place of dissemination of lung cancer, stomach and other Kind of M are observed in women in the field of pipes, while the men in the epididymis, spermatic cord, less protein shell. In these cases, the tumor nodes limited, dense, white, up to 3 cm in diameter. Microscopically have solid or tubular structure. Histogenesis unclear. These tumors are described as benign M genitals. Clinic and treatment depend on the localization.