Tentorial Schwannoma in a 64-Year-Old Female -Case Report-

Tentorial ectopic schwannoma: A case report and literature review

“…Since the first case was reported by Flickinger et al. in 1988 [6] , we collated only 18 patients with TES all over the world, including this case ( Table 1 ) [1 , [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] . It is popular to occur in children and young adults, and no significant differences are found between genders [5] .…”

“… Ref. Age/sex Clinic Site and growth pattern MRI imaging findings Other imaging findings Surgery Results Appearance Enhancement DTS Peritumoral edema [7] 64/F Transient global amnesia Right tentorium, supratentorial Cystic Heterogeneously enhancing mass - + Subtemporal approach Complete recovery [8] 60/F Long-lasting headaches Left tentorium, supra- and infratentorial Solid Homogeneously enhancing mass + - Suboccipital approach Complete recovery [1] 23/M Intermittent dizziness and difficulty swallowing Right tentorium, infratentorial Cystic and Solid Heterogeneously enhancing mass + - Petrosal craniotomy with retrolabyrynthine bony removal Complete recovery [9] 42/M Paresthesia and weakness of the 4 extremities Left CPA, infratentorial Cystic and Solid Homogeneously enhancing mass + - Retrosigmoid approach Complete recovery [10] 17/F Headaches, intermittent diplopia Left tentorium, supra-and infratentorial Cystic Heterogeneously enhancing mass - - Orbitozygomatic pterional craniotomy Complete recovery, MRI: no residual tumor [6] 22/M Headaches Tentorium, N/A Solid Homogeneously enhancing mass N/A …”

“…Different subtypes may have different origins. Intra-axial schwannoma might be derived from multipotential mesenchymal cells of the neural crest [7] . Periventricular schwannomas arise from the autonomic nerves of the choroid plexus.…”

Pontine extension of a tentorial schwannoma without cranial nerve involvement: a case report

“…Since that time, approximately 60 cases of schwannomas unrelated to the cranial nerves have been reported [ 14 , 15 ]. Most intracranial schwannomas unrelated to the cranial nerves have been described as being adherent to the dura mater and have been thought to arise from this structure [ 4 , 5 , 16 - 18 ]; in 10 cases, a tentorial attachment has been demonstrated (Table 1 [ 1 , 3 - 11 ]). Interestingly, none of the patients of the reported cases had neurofibromatosis.…”