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Zhou DJ, Woodson-Smith S, Emmert BE, Kornspun A, Larocque J, Kulick-Soper CV, Qiu MK, Ellis CA, Gugger JJ, Conrad EC, Waldman G, Ganguly T, Sinha SR, Davis KA, Stein JM, Liu GT, Gelfand M, Raghupathi R. Clinical characteristics and surgical outcomes of epilepsy associated with temporal encephalocele: A systematic review. Epilepsy Behav 2024; 158:109928. [PMID: 38959747 DOI: 10.1016/j.yebeh.2024.109928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/16/2024] [Accepted: 06/27/2024] [Indexed: 07/05/2024]
Abstract
Temporal encephaloceles (TE) are an under-identified, potentially intervenable cause of epilepsy. This systematic review consolidates the current data to identify the major clinical, neuroimaging, and EEG features and surgical outcomes of epilepsy associated with TE. Literature searches were carried out using MEDLINE, Embase, PsycINFO, Scopus, and Cochrane Library databases from inception to December 7, 2023. Studies were included if they described clinical, neuroimaging, EEG, or surgical data in ≥5 patients with TE and epilepsy. Of 562 studies identified in the search, 24 met the eligibility criteria, reporting 423 unique patients with both epilepsy and TE. Compared to epilepsy patients without TE, those with TE had a higher mean age of seizure onset and were less likely to have a history of febrile seizures. Seizure semiologies were variable, but primarily mirrored temporal lobe onset patterns. Epilepsy patients with TE had a higher likelihood of having clinical or radiographic features of idiopathic intracranial hypertension (IIH) than those without. Brain MRI may show ipsilateral mesial temporal sclerosis (16 %). CT scans of the skull base usually revealed bony defects near the TE (90 %). Brain PET scans primarily showed ipsilateral temporal lobe hypometabolism (80 %), mostly in the anterior temporal lobe (67 %). Scalp EEG mostly lateralized ipsilateral to the implicated TE (92 % seizure onset) and localized to the temporal lobe (96 %). Intracranial EEG revealed seizure onset near the TE (11 of 12 cases including TE-adjacent electrodes) with variable timing of spread to the ipsilateral hippocampus. After surgical treatment of the TE, the rate of Engel I or ILAE 1 outcomes at one year was 75 % for lesionectomy, 85 % for anterior temporal lobectomy (ATL), and 80 % for ATL with amygdalohippocampectomy. Further studies are needed to better elucidate the relationship between IIH, TE, and epilepsy, improve the identification of TE, and optimize surgical interventions.
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Affiliation(s)
- Daniel J Zhou
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Sarah Woodson-Smith
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Brian E Emmert
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Alana Kornspun
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Joshua Larocque
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Catherine V Kulick-Soper
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Maylene K Qiu
- Holman Biotech Commons, University of Pennsylvania, Philadelphia, PA, USA
| | - Colin A Ellis
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - James J Gugger
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Erin C Conrad
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Genna Waldman
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Taneeta Ganguly
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Saurabh R Sinha
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Kathryn A Davis
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Joel M Stein
- Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Grant T Liu
- Departments of Neurology and Ophthalmology, Division of Neuro-Ophthalmology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Michael Gelfand
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Ramya Raghupathi
- Department of Neurology, Penn Epilepsy Center, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.
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Al-Balushi N, Bouthour W, Banc A, Mosleh R, Saindane AM, Newman NJ, Biousse V. Seizures as the Initial Manifestation of Idiopathic Intracranial Hypertension Spectrum Disorder. Neuroophthalmology 2023; 47:248-254. [PMID: 38130812 PMCID: PMC10732617 DOI: 10.1080/01658107.2023.2251579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/14/2023] [Indexed: 12/23/2023] Open
Abstract
Idiopathic intracranial hypertension (IIH) is a syndrome of isolated elevated intracranial pressure of unknown aetiology. The IIH spectrum has evolved over the past decade making the diagnosis and management more challenging. The neurological examination in IIH is typically normal except for papilloedema and possible cranial nerve 6 palsy. Recent publications have highlighted skull base thinning and remodelling in patients with chronic IIH. Resulting skull base defects can cause meningo-encephalocoeles, which are potential epileptogenic foci. We describe the clinical and radiological characteristics of five IIH patients with seizures and meningo-encephalocoeles as the presenting manifestations of IIH spectrum disorder.
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Affiliation(s)
- Nisreen Al-Balushi
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Ophthalmology, Al-Nahdha Hospital, Muscat, Sultanate of Oman
| | - Walid Bouthour
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Ana Banc
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Ophthalmology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Rasha Mosleh
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
- Goldschleger Eye Institute, Sheba Medical Center, Tel-Hashomer, Israel
| | - Amit M. Saindane
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Neurology, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Nancy J. Newman
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Neurology, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Neurological Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Valérie Biousse
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Neurological Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
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Biousse V, Newman NJ. The expanding spectrum of idiopathic intracranial hypertension. Eye (Lond) 2023; 37:2361-2364. [PMID: 36509997 PMCID: PMC10397341 DOI: 10.1038/s41433-022-02361-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/18/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Once considered a rare and often difficult diagnosis in the era predating routine MRI, idiopathic intracranial hypertension has become an everyday concern in ophthalmology and neurology clinics where, especially in the latter, essentially every young overweight woman with headaches is initially presumed to have IIH. Has the diagnosis of IIH become too easy, and are we over-diagnosing IIH in this period of an accelerating obesity crisis? Or are we actually missing cases of IIH because they do not fit the classic clinical profile? We think it is both: at the same time IIH is being diagnosed in excess in obese women without papilledema, often resulting in unnecessary procedures, inappropriate treatment and even iatrogenic complications, the spectrum of this disorder is expanding to include a broad array of clinical presentations that involve multiple specialists beyond just the ophthalmologist and neurologist.
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Affiliation(s)
- Valérie Biousse
- Department of Ophthalmology, Emory University, Atlanta, GA, USA
- Department of Neurology, Emory University, Atlanta, GA, USA
| | - Nancy J Newman
- Department of Ophthalmology, Emory University, Atlanta, GA, USA.
- Department of Neurology, Emory University, Atlanta, GA, USA.
- Department of Neurological Surgery, Emory University, Atlanta, GA, USA.
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Surgical Repair of Skull Base CSF Leaks after Cisternography Diagnosis: Analysis of Validity and Surgical Outcome and Impact on Future Treatment Strategies. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8740352. [PMID: 35528177 PMCID: PMC9076329 DOI: 10.1155/2022/8740352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 04/09/2022] [Indexed: 11/22/2022]
Abstract
Skull base cerebrospinal fluid (CSF) leaks can lead to severe complications and require appropriate diagnosis and treatment. Cisternography is applied when exact localization via conventional imaging is not successful. The present study is aimed at identifying factors with potential impact on radiological results and surgical success. Cisternography followed by surgical repair due to skull base CSF leaks was performed in 63 cases between 2002 and 2020. The clinical and radiological findings were analyzed retrospectively. The etiology of CSF leaks was traumatic in 30.2%, spontaneous in 36.5%, and iatrogenic in 33.3%. The sensitivity of cisternography was 87.9%. Spontaneous CSF leaks tended to be diagnosed less frequently via cisternography and were significantly less frequently localized intraoperatively. The median postoperative follow-up period was 34 months. The primary surgical success rate was 79.4%, with a significantly higher success rate for lateral than for anterior skull base defects. Surgical failure tended to be lower in iatrogenic and higher in traumatic defects. Cisternography proved to be a highly sensitive method to localize skull base CSF leaks and can be recommended for advanced diagnostics. Iatrogenic leaks seemed to be more likely to have a favorable surgical outcome, whereas traumatic leaks tended to have a lower surgical success rate.
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