21. Mutations in NF2 are commonly expressed in meningiomas located in the cerebral and cerebellar hemispheres. 22. Meningiomas can develop from the arachnoid layer.23. Women are more prone to develop meningiomas . 24. In particular, meningiomas are known to produce musical auditory hallucinations, such as Schumann reported. 25. Meningiomas also may occur as a spinal tumor, more often in women than in men.26. Differential diagnosis includes schwannoma and meningioma . 27. In one episode he is diagnosed with an intracranial meningioma , which he eventually has removed. 28. Poesy first suffered from paraplegia at 17 ( 1992 ) due to acute thoracic intradural meningioma . 29. He also established a relationship between meningiomas , extrapyramidal disorder, and Parkinson's disease. 30. Starting in 1999, Copeland and Konrad performed three surgeries in which they resected meningioma brain tumors.