Mesothelioma is a malignant tumor. It happens in people who came in contact with asbestos. The lungs and abdomen can be attacked by this disease. There may be also rarer cases damaging other inner organs. Nowadays there is no efficient treatment of mesothelioma. There are however several mesothelioma treatment variants: chemotherapy, radiation treatment and surgery. Most of people diagnosed with mesothelioma have been exposed to asbestos for over 25 years. That's why the job, where the worker contacts with parts of asbestos is considered to be essentially hazardous. Very often the people feel the pangs in the chest that is produced by fluid in the lungs. Such symptoms are common for the malignant form of mesothelioma disease. Peritoneal mesothelioma which influences abdominal cavity may cause loss of mass, blood clotting, problems with deglutition among others. The symptoms of not innocent mesothelioma unfortunately are commonly wrongly regarded as other not so earnest diseases. That's why it is not always available to reveal it in proper time. If the case report of the patient includes exposure to asbestos at any time in the past, the probabilities for suspecting mesothelioma are higher. This person must be materially examined by an oncologist. The oncological inspection should be performed by means of X-ray scrutiny, but finally the person will be diagnosed only after the biopsy. But the new method of resolving this problem was invented lately. It involves testing Mesomark assay which inspects the degrees of proteins developed by the cells contaminated by malignant neoplasm. It can reveal much earlier that traditional methods. All the diseases are not so hard to cure on its primary stage. Such form of malignant neoplasm as mesothelioma is quite difficult. Traditional systems permit the person to survive up to a year, on average after the cure has been applied. The mesothelioma surgery can't guaranty the sufficient degree of success even if it is utilized in complex with other treatment methods. The first drawback of surgery is that tumor cannot be completely removed, because it can produce the death of the person. The malign mesothelioma can be cured by means of radiation therapy. It commonly mixed with radical surgery and provided at the same time with chemotherapy. Some patients that have utilized such complex of actions survived for more than 5 years. Nevertheless, when given alone, without other cure option, radiation therapy does not extend patients' life expectancy. If there was no surgery, the dose of radiation necessary to deal with the malignant neoplasm would kill the person. Chemotherapeutics is the course of medicines taken by person during definite period, it subdues the growing of malignant tumor. Usually those drugs have severe side effects on healthy cells as well and thus are given in complex with preparations which decrease their harmful side effects. The pemetrex and cisplasin combination is considered to be most beneficial and is utilized in chemotherapy. Even today's technologies and perfect knowledge can't completely treat some sarcomatoid mesothelioma, unfortunately.