As health checkups and brain imaging have become more widespread, brain tumors are increasingly being detected at relatively early stages. Yet many patients still dismiss warning signs from the brain — such as headaches and dizziness — as mere fatigue or stress. The brain is a critical organ that controls every function of the body. Even minor problems can manifest as a range of symptoms, and early diagnosis and appropriate treatment are especially important for brain tumors.
A brain tumor refers to any tumor that develops inside the skull, including in the brain and its surrounding tissues. A tumor is a mass formed by the abnormal proliferation of cells. Brain tumors are broadly divided into benign brain tumors and malignant brain tumors, also known as brain cancer. Benign brain tumors tend to grow relatively slowly and do not spread to other parts of the body, while malignant tumors grow rapidly and invade surrounding tissues, often proving difficult to treat.
Symptoms of brain tumors vary depending on their location. Headache is one of the most common symptoms, and caution is warranted if the headache is particularly severe in the morning or grows progressively worse over time. It may be accompanied by vomiting or nausea, and visual disturbances such as blurred vision or double vision may also occur. Other possible symptoms include weakness or numbness in the arms or legs, slurred speech, and difficulty maintaining balance — all of which may point to a brain tumor. Some patients experience sudden seizures. If a person with no prior history of illness suddenly suffers a seizure, a brain disorder should be suspected. Changes in cognitive function, such as memory loss or personality changes, may also occur. These symptoms tend to correspond to the functions governed by the area of the brain where the tumor is located.
The exact cause of brain tumors remains unknown, though genetic factors, certain hereditary conditions, and radiation exposure are recognized as risk factors. In most cases, they develop without any specific cause. Brain imaging studies such as computed tomography (CT) or magnetic resonance imaging (MRI) are essential for diagnosis. MRI, in particular, not only confirms the presence of a tumor inside the brain but also helps determine its location and size and its relationship to surrounding tissues. When necessary, a biopsy may be performed to identify the type of tumor and whether it is malignant.
Once a brain tumor is confirmed, the treatment approach is determined by comprehensively considering the type, size, and location of the tumor, as well as the patient's overall health. The most fundamental treatment is surgical removal of the tumor as safely as possible. When the tumor is located near critical brain functions, the focus is on preserving neurological function to the greatest extent possible. After surgery, radiation therapy or chemotherapy may be administered depending on the type of tumor. Radiation therapy uses high-energy radiation to suppress the growth of tumor cells. Chemotherapy, as the name suggests, uses various drugs to prevent tumor cells from multiplying. Recently, treatment outcomes for brain tumors have been steadily improving as a range of therapies, including targeted treatments, are actively being researched and applied in clinical practice.
For brain tumors, accurate diagnosis along with a tailored treatment strategy that takes into account the tumor's location and characteristics is crucial. Because the brain is a highly complex organ, post-treatment care aimed at restoring neurological function must also be prioritized. Even after a successful operation, rehabilitation and regular follow-up examinations are essential. There is no proven way to prevent brain tumors. However, paying close attention to changes in one's body can aid early diagnosis. If a headache of an unfamiliar nature persists, or if visual changes, seizures, or neurological symptoms appear, it is advisable to seek examination and care from a medical specialist immediately. The earlier a brain tumor is detected, the wider the range of treatment options becomes, and the better the long-term outcomes and prognosis may be.
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