"Ectopic meningiomas can occur at various sites, but in the majority of cases, they are found in the head and neck region 1-4. Reported locations include1-6:"
"mediastinum 4"
"Signal characteristics are similar to intracranial meningiomas."
"entrapped within the skull, sutures or scalp tissues due to defects in neural tube closure or as a result of trauma"
"hyperostosis of this skull, remodelling and expansion of the affected region with or without extra calvarial soft tissue mass"
"developmental rests of meningothelial cells (e.g. in the lung or lymph nodes)"