{"id":"0438fbb0-ea9e-490a-9e7c-5d8c6dffb3c0","slug":"extra-axial-adult-cerebellopontine-angle-medulloblastoma-an-extremely-rare-site-of-tumor-with-metastasis","title":"Extra axial adult cerebellopontine angle medulloblastoma: An extremely rare site of tumor with metastasis","authors":["Manish Singh","Goutham Cugati","Nigel Peter Symss","Anil Pande","Madabushi Chakravarthy Vasudevan","Ravi Ramamurthi"],"abstract":"Background: Medulloblastomas are rare in adults, representing less than 1% of primary adult brain tumors, and typically arise from the cerebellar vermis. Cerebellopontine angle (CP) medulloblastomas are infrequently reported, with most cases being intra-axial. The occurrence of an extra-axial CP angle medulloblastoma is extremely rare, and this article presents the first documented case of metastasis from such a tumor. Methods: A 22-year-old male patient with symptoms including headache, vomiting, ataxia, and facial weakness underwent imaging studies, including computed tomography and magnetic resonance imaging, which confirmed the presence of a left CP angle lesion. The patient underwent left retromastoid craniectomy for gross total excision of the tumor, and histopathological analysis was performed to confirm the diagnosis. Results: The histopathology revealed a highly cellular tumor consistent with classical medulloblastoma, WHO grade IV. Postoperatively, the patient showed improvement; however, he presented 15 months later with progressive quadriparesis and sensory impairment due to recurrent medulloblastoma and drop metastasis in the spine, which had not been previously reported. Conclusion: This case highlights the rarity of extra-axial CP angle medulloblastomas and the potential for metastasis, emphasizing the need for careful follow-up in patients with such tumors. Neurological deterioration in these patients should prompt evaluation for possible metastasis. Keywords: medulloblastoma, cerebellopontine angle, extra-axial, metastasis, adult, case report","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/0438fbb0-ea9e-490a-9e7c-5d8c6dffb3c0/featured/hero-1782421056920.png","publishDate":"2011-02-26T00:00:00.000Z","doi":"10.4103/2152-7806.77178","categories":["Original Article"],"fullTextUrl":"https://surgicalneurologyint.com/wp-content/uploads/2015/05/3251/SNI-2-25.pdf"}