SURG-02. ANAPLASTIC PLEOMORPHIC XANTHOASTROCYTOMA WITH LEPTOMENINGEAL DISSEMINATION PRESENTING WITH CRANIAL NEUROPATHY IN AN ADULT PATIENT: ILLUSTRATIVE CASE AND REVIEW OF THE LITERATURE

Abstract INTRODUCTION Anaplastic pleomorphic xanthoastrocytomas (APXA) are very rare, grade III malignant astrocytic glial neoplasms first described as a distinct entity in the 2016 World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS). They are generally seen...

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Veröffentlicht in:Neuro-oncology (Charlottesville, Va.) Va.), 2024-11, Vol.26 (Supplement_8), p.viii274-viii274
Hauptverfasser: Menaker, Simon, Boyke, Andre, Bannykh, Serguei, Ross, Lindsey, Eboli, Paula
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container_title Neuro-oncology (Charlottesville, Va.)
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creator Menaker, Simon
Boyke, Andre
Bannykh, Serguei
Ross, Lindsey
Eboli, Paula
description Abstract INTRODUCTION Anaplastic pleomorphic xanthoastrocytomas (APXA) are very rare, grade III malignant astrocytic glial neoplasms first described as a distinct entity in the 2016 World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS). They are generally seen in pediatric and young adult patients as supratentorial lesions with both solid and cystic components and have a high propensity for recurrence despite local treatment. APXAs occasionally demonstrate leptomeningeal dissemination (LMD) but extremely seldom at the time of diagnosis. They are typically treated via surgical resection with adjuvant chemoradiation, although there is no standard of care for adjuvant therapy. Case Presentation: The authors describe the case of a 37-year-old male with a history of seizures since age 11 who presented with four months of worsening headache, increasingly frequent seizures, and diplopia with right cranial nerve III palsy. Imaging at the time of diagnosis of his seizure disorder as a child demonstrated a small left temporal lesion, which remained stable on imaging for over 20 years and was never biopsied, however MRI at current presentation showed significant interval enlargement with intralesional hemorrhage and leptomeningeal enhancement involving the left temporal and parietal lobes, left internal auditory canal, and right oculomotor nerve. He underwent surgical resection with gross total resection achieved and pathology revealed WHO Grade III pleomorphic xanthoastrocytoma with ATG7::RAF1 fusion, 9p21 deletion, and TERT promoter mutation on next generation sequencing. This was followed by adjuvant whole brain radiation with boost and treatment with MEK inhibitor cobimetinib. His postoperative course was remarkable for intermittent speech difficulty and improving right third nerve palsy. CONCLUSION We describe the unusual presentation of an already exceedingly rare primary CNS tumor, namely APXA in an adult patient with LMD and cranial neuropathy at the time of diagnosis, and detail tailored adjuvant therapy based on genomic profiling.
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ANAPLASTIC PLEOMORPHIC XANTHOASTROCYTOMA WITH LEPTOMENINGEAL DISSEMINATION PRESENTING WITH CRANIAL NEUROPATHY IN AN ADULT PATIENT: ILLUSTRATIVE CASE AND REVIEW OF THE LITERATURE</title><source>Oxford University Press Journals All Titles (1996-Current)</source><creator>Menaker, Simon ; Boyke, Andre ; Bannykh, Serguei ; Ross, Lindsey ; Eboli, Paula</creator><creatorcontrib>Menaker, Simon ; Boyke, Andre ; Bannykh, Serguei ; Ross, Lindsey ; Eboli, Paula</creatorcontrib><description>Abstract INTRODUCTION Anaplastic pleomorphic xanthoastrocytomas (APXA) are very rare, grade III malignant astrocytic glial neoplasms first described as a distinct entity in the 2016 World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS). They are generally seen in pediatric and young adult patients as supratentorial lesions with both solid and cystic components and have a high propensity for recurrence despite local treatment. APXAs occasionally demonstrate leptomeningeal dissemination (LMD) but extremely seldom at the time of diagnosis. They are typically treated via surgical resection with adjuvant chemoradiation, although there is no standard of care for adjuvant therapy. Case Presentation: The authors describe the case of a 37-year-old male with a history of seizures since age 11 who presented with four months of worsening headache, increasingly frequent seizures, and diplopia with right cranial nerve III palsy. Imaging at the time of diagnosis of his seizure disorder as a child demonstrated a small left temporal lesion, which remained stable on imaging for over 20 years and was never biopsied, however MRI at current presentation showed significant interval enlargement with intralesional hemorrhage and leptomeningeal enhancement involving the left temporal and parietal lobes, left internal auditory canal, and right oculomotor nerve. He underwent surgical resection with gross total resection achieved and pathology revealed WHO Grade III pleomorphic xanthoastrocytoma with ATG7::RAF1 fusion, 9p21 deletion, and TERT promoter mutation on next generation sequencing. This was followed by adjuvant whole brain radiation with boost and treatment with MEK inhibitor cobimetinib. His postoperative course was remarkable for intermittent speech difficulty and improving right third nerve palsy. CONCLUSION We describe the unusual presentation of an already exceedingly rare primary CNS tumor, namely APXA in an adult patient with LMD and cranial neuropathy at the time of diagnosis, and detail tailored adjuvant therapy based on genomic profiling.</description><identifier>ISSN: 1522-8517</identifier><identifier>EISSN: 1523-5866</identifier><identifier>DOI: 10.1093/neuonc/noae165.1083</identifier><language>eng</language><publisher>US: Oxford University Press</publisher><ispartof>Neuro-oncology (Charlottesville, Va.), 2024-11, Vol.26 (Supplement_8), p.viii274-viii274</ispartof><rights>The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Neuro-Oncology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com. 2024</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Menaker, Simon</creatorcontrib><creatorcontrib>Boyke, Andre</creatorcontrib><creatorcontrib>Bannykh, Serguei</creatorcontrib><creatorcontrib>Ross, Lindsey</creatorcontrib><creatorcontrib>Eboli, Paula</creatorcontrib><title>SURG-02. ANAPLASTIC PLEOMORPHIC XANTHOASTROCYTOMA WITH LEPTOMENINGEAL DISSEMINATION PRESENTING WITH CRANIAL NEUROPATHY IN AN ADULT PATIENT: ILLUSTRATIVE CASE AND REVIEW OF THE LITERATURE</title><title>Neuro-oncology (Charlottesville, Va.)</title><description>Abstract INTRODUCTION Anaplastic pleomorphic xanthoastrocytomas (APXA) are very rare, grade III malignant astrocytic glial neoplasms first described as a distinct entity in the 2016 World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS). They are generally seen in pediatric and young adult patients as supratentorial lesions with both solid and cystic components and have a high propensity for recurrence despite local treatment. APXAs occasionally demonstrate leptomeningeal dissemination (LMD) but extremely seldom at the time of diagnosis. They are typically treated via surgical resection with adjuvant chemoradiation, although there is no standard of care for adjuvant therapy. Case Presentation: The authors describe the case of a 37-year-old male with a history of seizures since age 11 who presented with four months of worsening headache, increasingly frequent seizures, and diplopia with right cranial nerve III palsy. Imaging at the time of diagnosis of his seizure disorder as a child demonstrated a small left temporal lesion, which remained stable on imaging for over 20 years and was never biopsied, however MRI at current presentation showed significant interval enlargement with intralesional hemorrhage and leptomeningeal enhancement involving the left temporal and parietal lobes, left internal auditory canal, and right oculomotor nerve. He underwent surgical resection with gross total resection achieved and pathology revealed WHO Grade III pleomorphic xanthoastrocytoma with ATG7::RAF1 fusion, 9p21 deletion, and TERT promoter mutation on next generation sequencing. This was followed by adjuvant whole brain radiation with boost and treatment with MEK inhibitor cobimetinib. His postoperative course was remarkable for intermittent speech difficulty and improving right third nerve palsy. 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ANAPLASTIC PLEOMORPHIC XANTHOASTROCYTOMA WITH LEPTOMENINGEAL DISSEMINATION PRESENTING WITH CRANIAL NEUROPATHY IN AN ADULT PATIENT: ILLUSTRATIVE CASE AND REVIEW OF THE LITERATURE</title><author>Menaker, Simon ; Boyke, Andre ; Bannykh, Serguei ; Ross, Lindsey ; Eboli, Paula</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c833-4e856d4df8f7baaafb1428d3a7f7bcbcc8657570e328e42cc4f65df9fc8ba7673</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Menaker, Simon</creatorcontrib><creatorcontrib>Boyke, Andre</creatorcontrib><creatorcontrib>Bannykh, Serguei</creatorcontrib><creatorcontrib>Ross, Lindsey</creatorcontrib><creatorcontrib>Eboli, Paula</creatorcontrib><collection>CrossRef</collection><jtitle>Neuro-oncology (Charlottesville, Va.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Menaker, Simon</au><au>Boyke, Andre</au><au>Bannykh, Serguei</au><au>Ross, Lindsey</au><au>Eboli, Paula</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>SURG-02. ANAPLASTIC PLEOMORPHIC XANTHOASTROCYTOMA WITH LEPTOMENINGEAL DISSEMINATION PRESENTING WITH CRANIAL NEUROPATHY IN AN ADULT PATIENT: ILLUSTRATIVE CASE AND REVIEW OF THE LITERATURE</atitle><jtitle>Neuro-oncology (Charlottesville, Va.)</jtitle><date>2024-11-11</date><risdate>2024</risdate><volume>26</volume><issue>Supplement_8</issue><spage>viii274</spage><epage>viii274</epage><pages>viii274-viii274</pages><issn>1522-8517</issn><eissn>1523-5866</eissn><abstract>Abstract INTRODUCTION Anaplastic pleomorphic xanthoastrocytomas (APXA) are very rare, grade III malignant astrocytic glial neoplasms first described as a distinct entity in the 2016 World Health Organization (WHO) Classification of Tumors of the Central Nervous System (CNS). They are generally seen in pediatric and young adult patients as supratentorial lesions with both solid and cystic components and have a high propensity for recurrence despite local treatment. APXAs occasionally demonstrate leptomeningeal dissemination (LMD) but extremely seldom at the time of diagnosis. They are typically treated via surgical resection with adjuvant chemoradiation, although there is no standard of care for adjuvant therapy. Case Presentation: The authors describe the case of a 37-year-old male with a history of seizures since age 11 who presented with four months of worsening headache, increasingly frequent seizures, and diplopia with right cranial nerve III palsy. Imaging at the time of diagnosis of his seizure disorder as a child demonstrated a small left temporal lesion, which remained stable on imaging for over 20 years and was never biopsied, however MRI at current presentation showed significant interval enlargement with intralesional hemorrhage and leptomeningeal enhancement involving the left temporal and parietal lobes, left internal auditory canal, and right oculomotor nerve. He underwent surgical resection with gross total resection achieved and pathology revealed WHO Grade III pleomorphic xanthoastrocytoma with ATG7::RAF1 fusion, 9p21 deletion, and TERT promoter mutation on next generation sequencing. This was followed by adjuvant whole brain radiation with boost and treatment with MEK inhibitor cobimetinib. His postoperative course was remarkable for intermittent speech difficulty and improving right third nerve palsy. CONCLUSION We describe the unusual presentation of an already exceedingly rare primary CNS tumor, namely APXA in an adult patient with LMD and cranial neuropathy at the time of diagnosis, and detail tailored adjuvant therapy based on genomic profiling.</abstract><cop>US</cop><pub>Oxford University Press</pub><doi>10.1093/neuonc/noae165.1083</doi></addata></record>
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title SURG-02. ANAPLASTIC PLEOMORPHIC XANTHOASTROCYTOMA WITH LEPTOMENINGEAL DISSEMINATION PRESENTING WITH CRANIAL NEUROPATHY IN AN ADULT PATIENT: ILLUSTRATIVE CASE AND REVIEW OF THE LITERATURE
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