Neurographics最新文献_第8页

Stuck in the Middle: Nervus Intermedius‐Related Neuropathologic Imaging Spectrum 卡在中间：中间神经相关神经病理学成像光谱

Neurographics Pub Date : 2019-10-01 DOI: 10.3174/ng.1900006

S. E. Elakkad, J. Yetto, M. Landon, M. Cathey

{"title":"Stuck in the Middle: Nervus Intermedius‐Related Neuropathologic Imaging Spectrum","authors":"S. E. Elakkad, J. Yetto, M. Landon, M. Cathey","doi":"10.3174/ng.1900006","DOIUrl":"https://doi.org/10.3174/ng.1900006","url":null,"abstract":"The nervus intermedius is a complex nerve that traverses the cerebellopontine angle and is associated with a wide range of pathologies for which imaging plays a crucial diagnostic role. Cerebellopontine angle masses or neurovascular compression may directly involve the nervus intermedius.\u0000 Alternatively, pathologies that involve branches of the nervus intermedius may present with symptoms referable to the nervus intermedius, including sinonasal tumors, perineural tumor spread, or viral reactivation such as in Ramsay Hunt syndrome. Overlapping innervation with branches of the\u0000 trigeminal, glossopharyngeal, and vagus nerves can confound diagnosis and/or lead to mislocalization, which may result in delayed diagnosis or inappropriate therapy. This review article provides an in-depth overview of nervus intermedius anatomy and physiology, and the wide spectrum of pathologies\u0000 that can involve the nervus intermedius or its branches, with an emphasis on clinical relevance.Learning Objective: To understand the normal anatomy and physiology of the nervus intermedius as well as the clinical relevance and imaging findings of the neuropathologic spectrum of disease\u0000 referable to the nervus intermedius and its branches: the greater superficial petrosal nerve, the chorda tympani, and the sensory auricular branch.","PeriodicalId":36193,"journal":{"name":"Neurographics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3174/ng.1900006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45609780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Primary Leptomeningeal Medulloblastoma: Desmoplastic/Nodular Medulloblastoma without a Discrete Parenchymal Mass 原发性轻脑膜髓母细胞瘤:无离散实质肿块的纤维增生性/结节性髓母细胞瘤

Neurographics Pub Date : 2019-10-01 DOI: 10.3174/ng.1900015

M. Hanna, M. Hanna, M. Rosenblum, M. Fowkes, P. Belani

引用次数: 1

Perineural Invasion and Its Interrelationship with Neural Repair: A Review 神经周侵犯及其与神经修复的关系

Neurographics Pub Date : 2019-10-01 DOI: 10.3174/ng.1800066

P. Som, B. Miles, R. Bakst

{"title":"Perineural Invasion and Its Interrelationship with Neural Repair: A Review","authors":"P. Som, B. Miles, R. Bakst","doi":"10.3174/ng.1800066","DOIUrl":"https://doi.org/10.3174/ng.1800066","url":null,"abstract":"The impact of perineural invasion and perineural spread on survival and the MR imaging of this tumor spread have been well documented in the literature. What has not been addressed in the radiology literature is the mechanics that are behind perineural invasion. Perineural invasion\u0000 is not the result of a passive invasion of a nerve by tumor, a common misconception. Because there are no lymphatics within a nerve, perineural invasion is not mediated by a direct lymphatic extension. Rather, perineural invasion is the result of complex molecular interactions between a nerve\u0000 and an adjacent cancer. Once the cancer has entered a nerve, it can travel in the spaces between fascicles, which explains how such perineural invasion can appear at great distances from the primary tumor. This article reviews the current concepts regarding the mechanisms of perineural invasion\u0000 and the relationship to peripheral nerve regeneration. Perineural invasion is diagnosed by histology, whereas perineural spread can be identified on imaging.Learning Objective: The reader will learn the intimate relationship between a tumor and its adjacent nerves that lead to perineural\u0000 invasion. This process is the result of a series of molecular pathways, in part related to nerve regeneration.","PeriodicalId":36193,"journal":{"name":"Neurographics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3174/ng.1800066","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45989511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Added Value of 18F-FDOPA PET/CT in the Work-Up of Patients with Movement Disorders 18F-FDOPA PET/CT在运动障碍患者体检中的附加价值

Neurographics Pub Date : 2019-10-01 DOI: 10.3174/ng.1900004

K. Khamis, Nir Giladi, C. Levine, Mikhail Kesler, Jonathan Kuten, H. Lerman, E. Even-Sapir

引用次数: 2

MR Imaging of Meningioangiomatosis in a Pediatric Population 儿童脑膜瘤的MR成像

Neurographics Pub Date : 2019-10-01 DOI: 10.3174/ng.1900005

A. Bhatia, S. Saade-Lemus, J. Ndolo, W. Chow, E. Schwartz

引用次数: 0

Vein of Galen Aneurysmal Malformations: An Overview for the Diagnostic Neuroradiologist Galen动脉瘤畸形的静脉：神经放射科医生的诊断综述

Neurographics Pub Date : 2019-08-01 DOI: 10.3174/NG.1800053

S. Bukhari, F. Alsugair, J. Bhattacharya, M. Nicolas-Jilwan