Forehead mass

Forehead masses may be caused by different diseases. Meningiomas are one of the factors: Meningiomas are common, accounting for 15.31% of intracranial tumors, second only to gliomas. More adults, fewer elderly and children, fewer infants. There are slightly more women than men. Meningiomas originate in arachnoid endothelial cells, and any place in the skull that is rich in arachnoid particles and arachnoid villi is a common site for meningiomas. It is more common near the sagittal sinus, the convex surface of the brain, and the falx of the brain, followed by sphenoid ridges, saddle nodules, bronchi sulcus, cerebellar pontine angle and cerebellar canal. Outside the membrane. There are still ectopic meningioma, occasionally seen in skull stenosis, frontal sinus, nasal scalp or neck. It is from ectopic arachnoid tissue, not metastasis. Meningiomas are multiple, accounting for about 1% to 2%. It can be as many as dozens, scattered in the same part, one of which is a large tumor nodule and a small tumor, as big as a walnut, as small as a millet, and there are far more meningiomas than under the curtain. In addition, meningiomas can exist in the skull at the same time as gliomas and neurofibromas, or they can coexist with hemangiomas.