Oncosurgeon performs surgical treatment of malignant tumors as part of complex or combined treatment. This method reduces the likelihood of the growth of the disease. Neoplasms can be removed in various ways — this is determined by the level of their development. After examination, the oncosurgeon can apply a cavity or minimally invasive method of treatment. Surgical intervention can either be the only type of therapy, or part of a complex effect on a cancerous tumor.