Benign tumors generally grow slowly and do not metastasize. Meningiomas are a common type of brain tumor. Most meningiomas are benign and grow slowly within the skull. However, as a meningioma increases in size, it will gradually compress the surrounding brain tissue and important nerves and other structures, resulting in a series of symptoms. The faster a meningioma grows, the more likely it is that the tumor will increase in size and become symptomatic, so the speed of meningioma growth has a direct impact on the degree of harm it can cause to the patient’s body. How fast do benign meningiomas grow? The growth rate of benign meningioma is not constant, that is to say, different benign meningiomas grow at different speeds, and even the same meningioma grows at different stages at different speeds. Some benign meningiomas can grow for a longer period of time or even not grow at all, as evidenced by no change in the volume of the MRI that is reviewed during this time. Some benign meningiomas grow in a linear pattern, meaning that the growth rate is relatively uniform and constant. Other benign meningiomas that are more actively growing have an exponential pattern of growth, which means that the tumor increases in size more and more rapidly. At present, there is no accurate method to predict the growth rate of benign meningiomas, and the growth rate of benign meningiomas is not constant. For larger meningiomas or significantly growing meningiomas, early surgical treatment is needed to avoid serious neurological dysfunction caused by benign meningiomas compressing the brain tissue.