WebComputed tomography (CT) of the head was performed and demonstrated a 3.3 × 1.8 cm extra-axial homogeneously hyperdense mass in the left CPA causing regional mass effect on the brainstem and nearby neurovascular structures, with mild dilation of the third and fourth ventricles (Figure 1). WebJun 10, 2024 · The cerebellopontine angle (CPA) cistern is a subarachnoid space within the posterior cranial fossa. About 6%–10% of all intracranial masses are found in this …
Imaging of Cerebellopontine Angle Masses: Self-Assessment Module
WebMar 28, 2024 · The differential diagnosis of the IAC/cerebellopontine angle mass (CPA) is fairly clear-cut in that there is universal agreement regarding the four most common entities. Schwannoma of the eighth cranial nerve (acoustic neuroma) is the most common, followed by meningioma, arachnoid cyst, and epidermoid (in that order). WebMRI showed masses within the internal auditory canal (IAC) ipsilateral to the periorbital hemangioma with variable extension into the cerebellopontine angle (CPA) in 3 cases, with the mass being confined to the IAC in the fourth case (Figs 1–4). Two patients demonstrated extension of the enhancing mass beyond the IAC/CPA. rajasthan wildlife booking
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WebFeb 5, 2024 · Although a majority of tumors in the Cerebellopontine Angle (CPA) are vestibular schwannomas (VS), other masses can also be seen in the region and differentiation of various CPA tumors, particularly meningiomas can be difficult on imaging alone. Treatment options may vary based on specific pathology of the CPA tumor. In this … WebNov 1, 2024 · CPA : cerebellopontine angle 3D SS-GRE : volumetrically acquired steady-state gradient-echo IAC : internal auditory canal MF : middle fossa craniotomy PF : posterior fossa RS : retrosigmoid craniotomy SRS : stereotactic radiosurgery TL : translabyrinthine craniotomy VS : vestibular schwannoma WebJul 14, 2024 · AKA: Acoustic neuroma, acoustic schwannoma. Vestibular schwannomas are the most common CPA tumor comprising 85% of CPA masses. Vestibular schwannomas are the second most common extra-axial tumor in adults. They usually present in the fifth to sixth decades. Together with meningiomas, they comprise the majority of CPA tumors. outwood rescare