The meningioma is a tumor which arises from the meninges (these are membranes which surround your brain and spinal cord). Technically, this is not a brain tumor, but it is included in this category because it can compress or squeeze the adjacent brain, nerves and vessels.
The most common type of tumor which forms in the head is the meningioma. In the most cases, meningioma grows very slowly and often it passes a lot of years without causing symptoms. But in some cases, their effects on the vessels, nerves and adjancent brain tissue can cause serious disability. It is noticed that this happens most commonly in women and they are often discovered at older ages, but this can happen at any age. It is noticed that the most meningiomas grow slowly, often without any significant signs and symptoms so they do not always need immediate treatment and they should be monitored over time. [1,2]
The signs and symptoms of the meningioma typically begin gradually and they can be very suitable at first. Depending on where in the brain, or in rare cases the spine, the tumor is situated, the signs and symptoms can include:
- Weakness in your arms or legs
- Loss of smell
- Memory loss 
- Hearing loss or ringing in the ears
- Headaches that worsen with time
- A change in the vision, such as seeing double or blurriness 
The most signs and symptoms of the meningioma evolve slowly, but there are some cases when the meningioma can require emergency care. You should seek emergency care if you have sudden changes in your vision or memory or you have sudden onset of seizures. If you have persistent signs and symptoms which concern you, such as headaches which worsen over time, then you should make an appointment with your doctor. There are many cases when meningioma is discovered by imaging scans that are done due to headaches, stroke or head injury. Usually, this is not diagnosed on its own because in many cases it does not cause noticeable signs or symptoms. There are different factors which can help your doctor to give you the right treatment, such as your goals for treatment; your age and overall health; the rate of growth or aggressiveness of the tumor; the size and the location of your meningioma.
It is not known what the cause for meningioma is. Doctors know that something alters some cells in the meninges to make them multiply out of control which is leading to meningioma tumor. It is still unknown if this happens due to the genes which you inherit, the hormones (this may be related to the more frequent occurrence in women), the rare cases of prior exposure to radiation or other factors. There is not a solid evidence which can support the assertion that meningioma can happen in people who use cell phones .
Meningioma Risk factors
There are some factors which can increase the risk of this, such as
- Obesity: It is shown that a high BMI (body mass index) can increase the risk of certain types of cancers. Also, this factor is having higher chances of causing this. The relationship between obesity and this is not clear. 
- An inherited nervous system disorder: There are some studies in which are shown that a rare disorder called neurofibromatosis 2 is increasing the risk of this and other brain tumors.
- Female hormones: It is known that this is most common in women and this is leading doctors to believe that female hormones can play a role. There are some studies in which are suggested that there is a link between the breast cancer and this risk which is related to the role of hormones. 
- Radiation treatment: The radiation treatment which is involving radiation to the head can increase the risk of this.
The meningioma and its treatment, which is usually surgery and radiation therapy, can cause long – term complications, such as
- Personality changes
- Memory loss 
- Difficulty concentrating
Your doctor can treat some complications and it can refer you to specialists which can help you to cope with other complications.
 Ikawa F, Kinoshita Y, Takeda M, et al. Review of current evidence regarding surgery in elderly patients with meningioma. Neurologia Medico-Chirurgica. 2017;57(10):521–33. doi:10.2176/nmc.ra.2017-0011
 Niiro M, Yatsushiro M, Nakamura K, et al. Natural history of elderly patients with asymptomatic meningiomas. Journal of Neurology, Neurosurgery & Psychiatry. 2000;68:25-8.
 Bette S, Ruhland JM, Wiestler B, et al. Risk factors for neurocognitive impairment in patients with benign intracranial lesions. Scientific Reports. 2019;9.
 Ali AK, Elayoty AED, Elserry TH, et al. Visual outcome predictors after surgical excision of meningiomas compressing the optochiasmatic complex. Egyptian Journal of Neurosurgery. 2020;35.
 Hardell L, Carlberg M, Söderqvist F, Mild KH. Long‐term use of cellular phones and brain tumours: increased risk associated with use for ⩾10 years. Occupational & Environmental Medicine. 2007;64(9):626–32. doi:10.1136/oem.2006.029751
 Shao C, Bai LP, Qi ZY, et al. Overweight, obesity and meningioma risk: A meta-analysis. PLoS One. 2014;9(2):e90167. doi:10.1371/journal.pone.0090167
 Kubo M, Fukutomi T, Akashi-Tanaka S, Hasegawa T. Association of breast cancer with meningioma: Report of a case and review of the literature. Japanese Journal of Clinical Oncology. 2001;31(10):510-3.