What are the factors affecting the lethality of malignant brain tumors? The lethality of malignant brain tumors depends on various factors, which are discussed in the following article "Is a malignant brain tumor fatal?" We have mentioned the most important factors: - Tumor location; The location of the tumor in the brain is very important... Tumors in vital areas such as the brainstem or close to essential nerves can cause severe functional impairment and affect vital processes such as breathing or motor control. This makes surgical treatment difficult without causing further damage.. - Tumor type and grade; Not all brain tumors are the same... Tumors are graded based on how abnormal the cells are and how fast they are likely to grow.. High-grade tumors (grade III or IV) are more deadly because they grow and spread faster than low-grade tumors.. The rate at which a tumor grows plays an important role in how lethal it is.. Growth also means the spread of the tumor. The availability and effectiveness of treatment options, such as surgery, radiation therapy, or Chemotherapy can greatly affect the results. Some tumors may be inoperable due to their location or size, and not all respond well to radiation or chemotherapy. The age and general health of the patient may also affect the survival of patients with weaker immune system problems. Aggressive treatments and their recovery may be slower. Including patient mortality, it is very important to understand treatment outcomes and improve patient care... Brain tumors can arise in different areas of the brain, each of which has specific implications for prognosis and treatment. The complexity of surgical interventions, but also affect the possibility of functional disorders and the ability to perform essential tasks. In addition, tumors located in areas responsible for vital functions may significantly affect the overall health and survival of patients.. Researchers and doctors investigate how tumor location is related to survival and treatment effectiveness, and their goal is to make interventions based on these insights. How effective are treatment methods and their effect on patient survival? Brain tumor treatment methods including surgery, chemotherapy, radiotherapy and modern treatments such as immunotherapy have a great impact on patients' survival. According to statistics published in 2025, patients with malignant brain tumors who undergo surgery followed by chemotherapy and radiotherapy, their five-year survival chances increase by about 35%. Also, for patients with glioblastoma brain tumors, which is one It is one of the most malignant types, the use of modern treatment methods such as immunotherapy and targeted treatments in recent years has increased the chance of survival to 15-20% more than traditional treatments. Valid scientific documentation of the selection of a skilled and experienced surgeon has a significant impact on the success of brain tumor treatment. Experienced surgeons can remove the tumor in the best possible way and avoid side effects. It is Iran that has high experience and expertise in all types of brain tumor surgery...