Cerebellopontine angle meningioma originating from choroid plexus of the foramen of Luschka: An extremely rare entity and overlook of literature

INTRODUCTION AND IMPORTANCE: Meningiomas without dural attachments are quite a novelty, with such meningiomas in the posterior fossa being even more far and few between. The authors describe an extremely rare cerebellopontine angle (CPA) meningioma lacking a dural attachment arising from the choroid plexus of the foramen of Luschka (CPFOL). CASE PRESENTATION: A 35-year-old male presented to our center complaining of a generalized and progressive headache for 10 months. A 3 cm × 4 cm well-defined lesion in the left CPA, hypointense in T1 and hyperintense in T2-weighted magnetic resonance imaging (MRI), was noted with no evident dural base or dural attachment. CPFOL was appreciated right at the point where the tumoral base was detected, which implied that the tumor originated from CPFOL. A gross total resection (GTR) was achieved, with the postoperative period remaining uneventful. The histopathologic investigation confirmed a transitional meningioma World Health Organization (WHO) grade I with no atypical features. CLINICAL DISCUSSION: Meningioma without dural attachment remains a rare phenomenon, with few available in English literature, and such pathology in the posterior fossa is even more unusual. Discriminating between CPFOL and another kind of CPA meningioma is mandatory when dealing with intracranial meningioma surgeries. CONCLUSION: While managing a space-occupying lesion around CPA, although extremely rare, a meningioma originating from CPFOL is suggested to be included in the differentials with necessary imaging analysis and advised to be imperatively pursued before proceeding for surgical intervention.