Evaluation of Extra Axial Cerebellopontine Angle Tumours through MRI

Abstract

Aim: This study aimed to evaluate the incidence of extra-axial cerebellopontine angle tumours and to characterize extra-axial cerebellopontine angle tumours. . All patients with clinical suspicion of CP angle tumours subjected 1.5 T MR imaging system. Total 30 patients were evaluated during this period.Results: Extra-axial CPA tumours accounts for 7-10% of brain tumours. Most common extraaxial CPA tumour is schwannoma (60%), followed by meningioma (27%), epidermoid (7%), arachnoid cysts (7%). 51-60 years is the most common age group involved. Schwannomas are common extra-axial CPA tumours which are enhancing round masses most commonly arise from the vestibular nerve and associated with enlargement of the internal auditory canal. Meningiomas are the second most common extra-axial CP angle tumours which oval or hemispheric lesions with a broad attachment to tentorium or petrous dura matter.Conclusion: MRI is the most sensitive noninvasive modality to characterize extra-axial CPA tumours. MRI identifies the location and extension of the lesions based on their characteristic signal and enhancement pattern on contrast.

Peran Mri Dalam Pencitraan Diagnostik Tumor Cerebellopontine Angle (Cpa)

“…MR spectroscopy menunjukkan, peningkatan kolin dan puncak lipid yang dominan dalam metastasis, temuan penting lainnya yang dianggap mendukung diagnosis. [8][9] Gambar 9. Metastasis intra dan ekstra-aksial pada pria 69 tahun dengan kanker paru-paru dan sindrom hipertensi intrakranial.…”