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Zander C, Wolf K, El Rahal A, Volz F, Beck J, Urbach H, Lützen N. Spontaneous intracranial hypotension - a spinal disease. ROFO-FORTSCHR RONTG 2024. [PMID: 38968964 DOI: 10.1055/a-2318-8994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2024]
Abstract
Spontaneous intracranial hypotension (SIH) remains an underdiagnosed condition despite increasing awareness due to recent scientific advances. Diagnosis can be delayed by the broad clinical presentation and imaging pitfalls. This results in a high degree of physical impairment for patients, including social and psychological sequelae as well as long-term damage in the case of delayed diagnosis and treatment.The study is based on a selective literature search on PubMed including articles from 1990 to 2023 and the authors' clinical experience from working in a CSF center.SIH mostly affects middle-aged women, with the primary symptom being position-dependent orthostatic headache. In addition, there is a broad spectrum of possible symptoms that can overlap with other clinical conditions and therefore complicate the diagnosis. The causative spinal CSF loss can be divided into three main types: ventral (type 1) or lateral (type 2) dural leak and CSF-venous fistula (type 3). The diagnosis can be made using a two-stage workup. As a first step, noninvasive MRI of the head and spine provides indicators of the presence of SIH. The second step using focused myelography can identify the exact location of the cerebrospinal fluid leak and enable targeted therapy (surgical or interventional). Intrathecal pressure measurement or intrathecal injection of gadolinium is no longer necessary for primary diagnosis. Serious complications in the course of the disease can include space-occupying subdural hematomas, superficial siderosis, and symptoms of brain sagging, which can lead to misinterpretations. Treatment consists of closing the dural leak or the cerebrospinal fluid fistula. Despite successful treatment, a relapse can occur, which highlights the importance of follow-up MRI examinations and emphasizes the chronic nature of the disease. This paper provides an overview of the diagnostic workup of patients with suspected SIH and new developments in imaging and therapy. · SIH is an underdiagnosed condition with a wide range of possible symptoms.. · The first diagnostic step using MRI provides indications of the presence of SIH.. · The second diagnostic step using (dynamic) myelography can identify the CSF leak.. · Collaboration with a CSF center is advisable for further diagnosis and treatment.. · Prompt detection and treatment of SIH improves the outcome.. · Zander C, Wolf K, El Rahal A et al. Spontaneous intracranial hypotension - a spinal disease. Fortschr Röntgenstr 2024; DOI 10.1055/a-2318-8994.
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Affiliation(s)
- Charlotte Zander
- Dept. of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany
| | - Katharina Wolf
- Dept. of Neurosurgery, University Medical Center Freiburg, Freiburg, Germany
| | - Amir El Rahal
- Dept. of Neurosurgery, University Medical Center Freiburg, Freiburg, Germany
| | - Florian Volz
- Dept. of Neurosurgery, University Medical Center Freiburg, Freiburg, Germany
| | - Jürgen Beck
- Dept. of Neurosurgery, University Medical Center Freiburg, Freiburg, Germany
| | - Horst Urbach
- Dept. of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany
| | - Niklas Lützen
- Dept. of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany
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Osawa I, Mitsufuji T, Nagawa K, Hara Y, Yamamoto T, Araki N, Kozawa E. Comparing 2-dimensional versus 3-dimensional MR myelography for cerebrospinal fluid leak detection. Eur J Radiol Open 2024; 12:100565. [PMID: 38699593 PMCID: PMC11063600 DOI: 10.1016/j.ejro.2024.100565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/11/2024] [Accepted: 04/15/2024] [Indexed: 05/05/2024] Open
Abstract
Purpose We compared cerebrospinal fluid (CSF) leak conspicuity and image quality as visualized using 3D versus 2D magnetic resonance (MR) myelography in patients with spinal CSF leaks. Methods Eighteen patients underwent spinal MR imaging at 3 Tesla. Three board-certified radiologists independently evaluated CSF leak conspicuity and image quality on a 4-point scale; the latter assessed by scoring fat suppression, venous visualization, and severity of CSF flow artifacts. Additionally, the evaluators ranked the overall performances of 2D versus 3D MR myelography upon completing side-by-side comparisons of CSF leak conspicuity. Inter-reader agreement was determined using the Gwet's AC1. Results The quality of 3D MR myelography images was significantly better than that of 2D MR myelography with respect to CSF leak conspicuity (mean scores: 3.3 vs. 1.9, p < 0.0001) and severity of CSF flow artifacts on the axial view (mean scores: 1.0 vs. 2.5, p = 0.0001). Inter-reader agreement was moderate to almost perfect for 2D MR myelography (AC1 = 0.55-1.00), and almost perfect for 3D MR myelography (AC1 = 0.85-1.00). Moreover, 3D MR myelography was judged to be superior to 2D acquisition in 78 %, 83 %, and 83 % of the samples per readers 1, 2 and 3, respectively; the inter-reader agreement was almost perfect (AC1: reader 1 vs. 2; 0.98, reader 2 vs. 3; 0.96, reader 3 vs. 1; 0.98). Conclusion CSF leaks are more conspicuous when using 3D MR myelography than when using its 2D counterpart; therefore, the former is more reliable for identifying such leaks.
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Affiliation(s)
- Iichiro Osawa
- Department of Radiology, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Takashi Mitsufuji
- Department of Neurology, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Keita Nagawa
- Department of Radiology, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Yuki Hara
- Department of Radiology, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Toshimasa Yamamoto
- Department of Neurology, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Nobuo Araki
- Department of Neurology, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
| | - Eito Kozawa
- Department of Radiology, Saitama Medical University Hospital, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama 350-0495, Japan
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Jurcau MC, Jurcau A, Hogea VO, Diaconu RG. Spontaneous Intracranial Hypotension: Case Report and Update on Diagnosis and Treatment. Diagnostics (Basel) 2024; 14:881. [PMID: 38732297 PMCID: PMC11083259 DOI: 10.3390/diagnostics14090881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
Spontaneous intracranial hypotension (SIH) is an important cause of daily headaches that occur in young and middle-aged, active persons and is often misdiagnosed, leading to prolonged inactivity and rather high healthcare expenditures. Its diagnosis requires a high degree of clinical suspicion and careful interpretation of imaging studies. We present a case of SIH, which was successfully treated but which posed serious diagnostic challenges, ranging from cerebro-vascular disease and meningitis to granulomatous diseases, and for whom every therapeutic attempt just worsened the patient's condition until we finally reached the correct diagnosis. To raise awareness of this condition, we also present an updated overview of the clinical picture, evaluation, and treatment options for SIH.
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Affiliation(s)
- Maria Carolina Jurcau
- Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania; (M.C.J.); (V.O.H.); (R.G.D.)
| | - Anamaria Jurcau
- Department of Psycho-Neurosciences and Rehabilitation, University of Oradea, 410087 Oradea, Romania
| | - Vlad Octavian Hogea
- Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania; (M.C.J.); (V.O.H.); (R.G.D.)
| | - Razvan Gabriel Diaconu
- Faculty of Medicine and Pharmacy, University of Oradea, 410087 Oradea, Romania; (M.C.J.); (V.O.H.); (R.G.D.)
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Pascaud J, Redon S, Elzière M, Donnet A. Real-life study of the use of oto-acoustic emissions in the diagnosis of intracranial hypotension. Rev Neurol (Paris) 2024; 180:154-162. [PMID: 37827931 DOI: 10.1016/j.neurol.2023.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/07/2023] [Accepted: 07/18/2023] [Indexed: 10/14/2023]
Abstract
BACKGROUND The diagnosis of spontaneous or post-traumatic intracranial hypotension (IH) mainly relies on clinical features and neuro-imaging. However, the results of brain and spine magnetic resonance imaging are not always contributive. There is an interest for other non-invasive procedures, able to confirm or refute the diagnosis. The use of oto-acoustic emissions (OAE) was previously reported on isolated cases of IH associated with endolymphatic hydrops (ELH). The aim of this study was to assess the real-life utilization of this electrophysiological method in a larger population of suspected IH. METHODS A retro-prospective cohort study was conducted from November 2013 to July 2022 in patients with a suspected or doubtful diagnosis of IH. They were assessed for ELH by recording bilateral distortion product of oto-acoustic emissions (DPOAE) in sitting then in supine position. RESULTS Among the 32 patients assessed, the diagnostic of IH was confirmed in 18 patients. An ELH was shown in 15 of them (83%), but also in seven other patients. They had several differential diagnoses: chronic migraine, Chiari malformation, rebound intracranial hypertension and perilymph fistula. CONCLUSIONS This procedure seems to be insufficient to exclude differential diagnosis when intracranial hypotension is suspected.
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Affiliation(s)
- J Pascaud
- Department of Evaluation and Treatment of Pain, FHU INOVPAIN, CHU Timone, AP-HM, Marseille, France
| | - S Redon
- Department of Evaluation and Treatment of Pain, FHU INOVPAIN, CHU Timone, AP-HM, Marseille, France.
| | - M Elzière
- Vertigo Center, European Hospital, Marseille, France
| | - A Donnet
- Department of Evaluation and Treatment of Pain, FHU INOVPAIN, CHU Timone, AP-HM, Marseille, France; INSERM U-1107, CHU de Clermont-Ferrand, Clermont-Ferrand, France
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Galvan J, Maya M, Prasad RS, Wadhwa VS, Schievink W. Spinal Cerebrospinal Fluid Leak Localization with Digital Subtraction Myelography: Tips, Tricks, and Pitfalls. Radiol Clin North Am 2024; 62:321-332. [PMID: 38272624 DOI: 10.1016/j.rcl.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Cerebrospinal fluid (CSF) leak can cause spontaneous intracranial hypotension (SIH) which can lead to neurologic symptoms, such as orthostatic headache. Over time, imaging techniques for detecting and localizing CSF leaks have improved. These techniques include computed tomography (CT) myelography, dynamic CT myelography, cone-beam CT, MRI, MR myelography, and digital subtraction myelography (DSM). DSM provides the highest sensitivity for identifying leak sites and has comparable radiation exposure to CT myelography. The introduction of the lateral decubitus DSM has proven invaluable in localizing leaks when other imaging tests have been inconclusive.
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Affiliation(s)
- Javier Galvan
- Department of Imaging, Cedars-Sinai Medical Center; Department of Imaging, Cedars Sinai Medical Center, 8700 Beverly Boulevard Taper Mezzanine M-335, Los Angeles, CA 90048
| | - Marcel Maya
- Department of Imaging, Cedars-Sinai Medical Center; Department of Imaging, Cedars Sinai Medical Center, 8700 Beverly Boulevard Taper Mezzanine M-335, Los Angeles, CA 90048.
| | - Ravi S Prasad
- Department of Imaging, Cedars Sinai Medical Center, 8700 Beverly Boulevard Taper Mezzanine M-335, Los Angeles, CA 90048
| | - Vikram S Wadhwa
- Department of Imaging, Cedars Sinai Medical Center, 8700 Beverly Boulevard Taper Mezzanine M-335, Los Angeles, CA 90048
| | - Wouter Schievink
- Department of Imaging, Cedars Sinai Medical Center, 8700 Beverly Boulevard Taper Mezzanine M-335, Los Angeles, CA 90048; Department of Neurosurgery, Cedars-Sinai Medical Center
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Cagnazzo F, Radu RA, Rapido F, Fendeleur J, Charif M, Corti L, Lonjon N, Ducros A, Costalat V. A technique to localize posteriorly located spinal dural leaks associated with spontaneous intracranial hypotension: Dorsal-decubitus dynamic CT myelography. Interv Neuroradiol 2023:15910199231222672. [PMID: 38151024 DOI: 10.1177/15910199231222672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023] Open
Abstract
BACKGROUND Precise localization and understanding of the origin of cerebrospinal fluid (CSF) leak is crucial to allow targeted treatment. We report the technical feasibility and utility of dorsal-decubitus dynamic computed tomography (DDDCT) myelography to localize posteriorly located dural defects in patients with suspicion of posterolateral dural tears. METHODS This study reports a series of four consecutive patients with posteriorly located SLEC and suspicion of posterolateral CSF leak who received DDDCT to localize the site of the leak. Patients were collected between October 2022 and October 2023. The technique of DDDCT and its efficacy to detect the site of CSF leak are reported. RESULTS In all four patients (three females, one male, mean age 39 years), DDDCT myelography was technically successful and precisely demonstrated the site of the CSF leak. In one patient with both anterior and posterior SLEC, DDDCT allowed to exclude the presence of a posteriorly located leak, while a subsequent ventral decubitus dynamic CT myelography localized the leak. Leak sites were all thoracic, except for one that was cervical. Information obtained from the DDDCT myelography was considered useful to target the treatment of the leak. CONCLUSIONS Based on our experience, DDDCT provided sufficient spatial and temporal resolution to pinpoint fast CSF leaks and it may be considered to localize posterolateral dural defects.
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Affiliation(s)
- Federico Cagnazzo
- Neuroradiology Department, Montpellier University Hospital, Gui-de-Chauliac, Montpellier, France
| | - Răzvan Alexandru Radu
- Department of Clinical Neurosciences, "Carol Davila" University of Medicine and Pharmacy, Bucarest, Romania
| | - Francesca Rapido
- Anesthesiology and Critical Care Medicine, Montpellier University Hospital, Gui de Chauliac, Montpellier, France
| | - Julien Fendeleur
- Anesthesiology and Critical Care Medicine, Montpellier University Hospital, Gui de Chauliac, Montpellier, France
| | - Mahmoud Charif
- Neurorology Department, Montpellier University Hospital, Gui-de-Chauliac, Montpellier, France
| | - Lucas Corti
- Neurorology Department, Montpellier University Hospital, Gui-de-Chauliac, Montpellier, France
| | - Nicolas Lonjon
- Neurosurgical Department, Montpellier University Hospital, Gui-de-Chauliac, Montpellier, France
| | - Anne Ducros
- Neurorology Department, Montpellier University Hospital, Gui-de-Chauliac, Montpellier, France
| | - Vincent Costalat
- Neuroradiology Department, Montpellier University Hospital, Gui-de-Chauliac, Montpellier, France
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7
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Lützen N, Aleman EB, El Rahal A, Volz F, Fung C, Beck J, Urbach H. Sacral Dural Tears as a Cause of Spontaneous Intracranial Hypotension. Clin Neuroradiol 2023; 33:957-964. [PMID: 37261452 PMCID: PMC10654183 DOI: 10.1007/s00062-023-01292-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 04/09/2023] [Indexed: 06/02/2023]
Abstract
PURPOSE Dural tears at the level of the cervical, thoracic, and lumbar spine cause spontaneous intracranial hypotension (SIH) in patients with a spinal longitudinal extradural CSF collection (SLEC); however, sacral dural tears have rarely been reported so far. This study focuses on sacral dural tears as a cause of SIH. METHODS Retrospective data from SIH patients with confirmed sacral dural tears studied between October 2020 and November 2022 were analyzed with respect to demographic, clinical and imaging features. Digital subtraction myelography (DSM) and lumbar epidural blood patch (EBP) were modified by placing the patient in reversed Trendelenburg position. RESULTS Of the SIH patients, 9 (all women; mean age, 38.5 years; mean body mass index, BMI, 22.9) out of 149 had a sacral dural leak (6%) that occurred spontaneously in 7/9, while 2/9 were likely associated with minor trauma. None had a sacral fracture. The mean SIH score was 6.8. All patients showed SLEC on heavily T2-weighted MR myelography (T2-MRM), 4/9 exclusively sacral and 5/9 with partial or complete involvement of the remaining spine. 4/9 had none, but 5/9 had meningeal sacral cysts, 2/5 had large cysts/ectasia. Confirmation of the sacral origin of the leak was provided in 4/9 by T2-MRM, in 2/9 by DSM and 3/9 by CT myelography (CTM) whereas 0/9 revealed the exact site of leak within the sacrum. CONCLUSION Sacral dural tears should be considered as a possible cause for SIH. It is concluded to implement T2-MRM covering the entire sacrum in the standard MRI protocol and propose EBP in the reverse Trendelenburg position as a therapeutic approach.
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Affiliation(s)
- Niklas Lützen
- Dept. of Neuroradiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany.
| | - Enrique Barvulsky Aleman
- Dept. of Neuroradiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
| | - Amir El Rahal
- Dept. of Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
| | - Florian Volz
- Dept. of Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
| | - Christian Fung
- Dept. of Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
| | - Jürgen Beck
- Dept. of Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
| | - Horst Urbach
- Dept. of Neuroradiology, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
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8
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Rohatgi VK, Robbins MS, Roytman M, Chazen JL. Spontaneous Intracranial Hypotension in Pregnancy. Curr Pain Headache Rep 2023; 27:685-693. [PMID: 37688759 DOI: 10.1007/s11916-023-01163-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2023] [Indexed: 09/11/2023]
Abstract
PURPOSE OF REVIEW Spontaneous intracranial hypotension (SIH) is a debilitating disease typically featuring orthostatic headache and caused by a spinal CSF leak. This review will describe the characteristics of SIH in pregnant patients and the associated unique management and treatment considerations. RECENT FINDINGS Herein, a novel case is reported of a 41-year-old woman who presented with SIH pre-conception but saw marked improvement of symptoms after 5 weeks antepartum and symptom recurrence 2 months post-partum. A literature review of SIH in pregnancy revealed 14 reported patients across 10 studies since 2000. All the reported cases resulted in delivery of healthy infants and symptomatic improvement with conservative management or a variety of treatment modalities including non-targeted epidural blood patch (EBP). Clinical and imaging features of SIH in pregnancy are reviewed. We hypothesize an antenatal protective mechanism against SIH symptoms through cephalad redistribution of CSF volume from the spinal to intracranial compartments related to uterine growth and decreased CSF volume within the lumbar cistern. Treatment recommendations are discussed including duration of bed rest and decision for non-targeted multi-site EBPs. When required, non-invasive diagnostic spine MRI using fat-suppressed axial T2-weighted imaging may be helpful.
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Affiliation(s)
- Varun K Rohatgi
- Department of Radiology, Weill Cornell Medicine, New York, NY, USA
| | | | - Michelle Roytman
- Department of Radiology, Weill Cornell Medicine, New York, NY, USA
| | - J Levi Chazen
- Department of Radiology, Hospital for Special Surgery, 535 E 70th St., New York, NY, 10021, USA.
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9
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Sharp S, Silbert PL, Davies S, Friedland P. Spontaneous Intracranial Hypotension: An Uncommon Cause of Postural Vestibulocochlear Symptoms. EAR, NOSE & THROAT JOURNAL 2023:1455613231194431. [PMID: 37596853 DOI: 10.1177/01455613231194431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2023] Open
Abstract
Spontaneous intracranial hypotension is an uncommon but increasingly recognized condition characterized by an orthostatic headache secondary to low cerebrospinal fluid pressure. Vestibulocochlear symptoms are common but rarely the only presenting feature and can be challenging to differentiate from Meniere's disease. We present a case series that highlights the common vestibulocochlear symptoms and a review of the literature to increase awareness amongst otolaryngologists and highlight the path to diagnosis and management of this condition.
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Affiliation(s)
- Samuel Sharp
- Department of Otolaryngology Head and Neck Surgery, Joondalup Health Campus, Perth, WA, Australia
| | - Peter L Silbert
- Medical School, University Western Australia, Perth, WA, Australia
| | - Scott Davies
- Interventional Neuroradiology, Royal Perth Hospital, Perth, WA, Australia
| | - Peter Friedland
- Department of Otolaryngology Head and Neck Surgery, Joondalup Health Campus, Perth, WA, Australia
- Medical School, University Western Australia, Perth, WA, Australia
- School of Medicine, Notre Dame University, Perth, WA, Australia
- Department of Otolaryngology, Head and Neck Surgery, Sir Charles Gairdner Hospital, Perth, WA, Australia
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10
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Rajpal S, Nambiar M, Castanelli D, Khabaza A, Asadi H, Jhamb A, Mark Brooks D, Maingard J. Spontaneous Intracranial Hypotension and Spinal Epidural CSF Leaks: Diagnosis and Management. J Clin Neurosci 2023; 111:46-56. [PMID: 36948109 DOI: 10.1016/j.jocn.2023.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/05/2023] [Accepted: 03/07/2023] [Indexed: 03/22/2023]
Abstract
Spontaneous intracranial hypotension from spinal cerebrospinal fluid leak is a condition that often presents as orthostatic headaches. Diagnosis and localisation of spinal CSF leaks remain difficult despite multiple imaging modalities that can be used to aid identification. These include traditional CT myelography and MRI as well as newer techniques such as dynamic and digital subtraction myelography. Leaks can be classified into types and optimal localisation and management techniques vary by type of leak. Localisation of a leak can aid in targeting treatment such as an epidural blood patch if conservative measures fail. Where unsuccessful, repeated blood patches and novel techniques can be used to improve patient symptoms. Much of this condition is not well understood and evidence is lacking, with many avenues for potential research.
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Affiliation(s)
- Simran Rajpal
- Department of Anaesthesia and Perioperative Medicine, Monash Health, Victoria, Australia.
| | - Mithun Nambiar
- Monash Imaging, Monash Health, Victoria, Australia; Faculty of Medicine, Nursing and Health Sciences, Monash University, Australia
| | - Damian Castanelli
- Department of Anaesthesia and Perioperative Medicine, Monash Health, Victoria, Australia; Faculty of Medicine, Nursing and Health Sciences, Monash University, Australia
| | - Ali Khabaza
- Monash Imaging, Monash Health, Victoria, Australia; Faculty of Medicine, Nursing and Health Sciences, Monash University, Australia
| | - Hamed Asadi
- Department of Neuro-Interventional Radiology, Austin Hospital, Heidelberg, Victoria, Australia; Department of Neuro-Interventional Radiology, St Vincent's Hospital, Fitzroy, Victoria, Australia; Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia; School of Medicine, Deakin University, Waurn Ponds, Geelong, Victoria, Australia
| | - Ash Jhamb
- Department of Neuro-Interventional Radiology, St Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Duncan Mark Brooks
- Department of Neuro-Interventional Radiology, Austin Hospital, Heidelberg, Victoria, Australia; Department of Neuro-Interventional Radiology, St Vincent's Hospital, Fitzroy, Victoria, Australia
| | - Julian Maingard
- Department of Neuro-Interventional Radiology, Austin Hospital, Heidelberg, Victoria, Australia; Department of Neuro-Interventional Radiology, St Vincent's Hospital, Fitzroy, Victoria, Australia; Faculty of Medicine, Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia; School of Medicine, Deakin University, Waurn Ponds, Geelong, Victoria, Australia
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11
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Piechowiak EI, Aeschimann B, Häni L, Kaesmacher J, Mordasini P, Jesse CM, Schankin CJ, Raabe A, Schär RT, Gralla J, Beck J, Dobrocky T. Epidural Blood Patching in Spontaneous Intracranial Hypotension-Do we Really Seal the Leak? Clin Neuroradiol 2023; 33:211-218. [PMID: 36028627 PMCID: PMC10014648 DOI: 10.1007/s00062-022-01205-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 07/03/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Epidural blood patch (EBP) is a minimally invasive treatment for spontaneous intracranial hypotension (SIH). Follow-up after EBP primarily relies on clinical presentation and data demonstrating successful sealing of the underlying spinal cerebrospinal fluid (CSF) leak are lacking. Our aim was to evaluate the rate of successfully sealed spinal CSF leaks in SIH patients after non-targeted EBP. METHODS Patients with SIH and a confirmed spinal CSF leak who had been treated with non-targeted EBP were retrospectively analyzed. Primary outcome was persistence of CSF leak on spine MRI or intraoperatively. Secondary outcome was change in clinical symptoms after EBP. RESULTS In this study 51 SIH patients (mean age, 47 ± 13 years; 33/51, 65% female) treated with non-targeted EBP (mean, 1.3 EBPs per person; range, 1-4) were analyzed. Overall, 36/51 (71%) patients had a persistent spinal CSF leak after EBP on postinterventional imaging and/or intraoperatively. In a best-case scenario accounting for missing data, the success rate of sealing a spinal CSF leak with an EBP was 29%. Complete or substantial symptom improvement in the short term was reported in 45/51 (88%), and in the long term in 17/51 (33%) patients. CONCLUSION Non-targeted EBP is an effective symptomatic treatment providing short-term relief in a substantial number of SIH patients; however, successful sealing of the underlying spinal CSF leak by EBP is rare, which might explain the high rate of delayed symptom recurrence. The potentially irreversible and severe morbidity associated with long-standing intracranial hypotension supports permanent closure of the leak.
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Affiliation(s)
- Eike I Piechowiak
- Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstr. 8, 3010, Bern, Switzerland.
| | - Benjamin Aeschimann
- Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstr. 8, 3010, Bern, Switzerland
| | - Levin Häni
- Department of Neurosurgery, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Johannes Kaesmacher
- Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstr. 8, 3010, Bern, Switzerland
| | - Pasquale Mordasini
- Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstr. 8, 3010, Bern, Switzerland
| | - Christopher Marvin Jesse
- Department of Neurosurgery, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Christoph J Schankin
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Andreas Raabe
- Department of Neurosurgery, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Ralph T Schär
- Department of Neurosurgery, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Jan Gralla
- Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstr. 8, 3010, Bern, Switzerland
| | - Jürgen Beck
- Department of Neurosurgery, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland.,Department of Neurosurgery, Medical Center-University of Freiburg, Freiburg, Germany
| | - Tomas Dobrocky
- Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstr. 8, 3010, Bern, Switzerland
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12
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Mamlouk MD, Shen PY, Dahlin BC. Modified Dynamic CT Myelography for Type 1 and 2 CSF Leaks: A Procedural Approach. AJNR Am J Neuroradiol 2023; 44:341-346. [PMID: 36732032 PMCID: PMC10187812 DOI: 10.3174/ajnr.a7784] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/06/2023] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND PURPOSE Dynamic CT myelography can identify spinal CSF leaks secondary to dural tears (type 1) and ruptured meningeal diverticula (type 2), but the radiation can be high secondary to multiple successive acquisitions. The purpose of this article is to discuss the procedural approach of a modified dynamic CT myelography technique with single scan acquisitions, reduced contrast volume, and condensed scan coverage and compare its radiation dose with that in traditional dynamic CT myelography. MATERIALS AND METHODS Retrospective review was performed for patients with spontaneous CSF leaks showing extradural collections on spine MR imaging who underwent traditional and modified dynamic CT myelography. The radiation doses between the 2 cohorts were compared. RESULTS Thirty-seven patients (25 women, 12 men) had a type 1 or 2 CSF leak on dynamic CT myelography. Thirty-one patients had a type 1 CSF leak, and 6 patients had type 2 leaks. The traditional dynamic CT myelography was performed in 25 patients, and the average number of acquisitions per dynamic CT myelography was 3.6. The mean total effective dose per dynamic CT myelography was 31.3 mSv (range, 11.3-68.4 mSv). The modified dynamic CT myelography was performed in 12 patients, and the average number of acquisitions was 2.8. The mean total effective dose per dynamic CT myelography was 15.1 mSv (range, 4.8-24.6 mSv). The effective dose and dose-length product between the cohorts were statistically significant (P < .0001 and .01, respectively). CONCLUSIONS Modified dynamic CT myelography performed with single scan acquisitions, smaller volume of contrast, and reduced scan coverage can reduce the radiation dose for type 1 and 2 CSF leak detection.
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Affiliation(s)
- M D Mamlouk
- From the Department of Radiology (M.D.M., P.Y.S.), The Permanente Medical Group, Kaiser Permanente Medical Center, Santa Clara, Santa Clara, California
- Department of Radiology and Biomedical Imaging (M.D.M.), University of California, San Francisco, San Francisco, California
| | - P Y Shen
- From the Department of Radiology (M.D.M., P.Y.S.), The Permanente Medical Group, Kaiser Permanente Medical Center, Santa Clara, Santa Clara, California
| | - B C Dahlin
- Department of Radiology (B.C.D.), The Permanente Medical Group, Kaiser Permanente Medical Center, Sacramento, Sacramento, California
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13
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Carroll I, Callen A. Phase Contrast Spine MRI for the Evaluation of CSF Leak, and Why It Matters. Neurology 2023; 100:313-314. [PMID: 36357186 DOI: 10.1212/wnl.0000000000201694] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 10/21/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ian Carroll
- From the Chief (I.C.), Stanford CSF Leak Headache Program Associate Professor, Department of Anesthesiology, Perioperative, and Pain Medicine Stanford School of Medicine; and Assistant Professor of Radiology (A.C.), Neuroradiology Section University of Colorado Anschutz Medical Campus, Aurora, CO.
| | - Andrew Callen
- From the Chief (I.C.), Stanford CSF Leak Headache Program Associate Professor, Department of Anesthesiology, Perioperative, and Pain Medicine Stanford School of Medicine; and Assistant Professor of Radiology (A.C.), Neuroradiology Section University of Colorado Anschutz Medical Campus, Aurora, CO
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14
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Lee SJ, Kim D, Suh CH, Shim WH, Heo H, Jo S, Chung SJ, Kim HS, Kim SJ. Detection rate of MR myelography without intrathecal gadolinium in patients with newly diagnosed spontaneous intracranial hypotension. Clin Radiol 2022; 77:848-854. [PMID: 35985843 DOI: 10.1016/j.crad.2022.06.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/16/2022] [Accepted: 06/28/2022] [Indexed: 11/26/2022]
Abstract
AIM To evaluate the detection rate of magnetic resonance (MR) myelography without intrathecal gadolinium for cerebrospinal fluid (CSF) leakage in patients with newly diagnosed spontaneous intracranial hypotension (SIH) and to validate a published scoring system for predicting CSF leakage. MATERIALS AND METHODS This retrospective, observational, single-institution study included patients with newly diagnosed SIH between March 2015 and April 2021. Patients were included if they (a) had newly diagnosed SIH and (b) underwent initial brain MR imaging and preprocedural MR myelography with two- and three-dimensional turbo spin-echo sequences. Patients who underwent spine surgery or procedures including epidural injection and acupuncture were excluded. The detection rate was defined as the proportion of patients with a true-positive MR myelography result among all patients with confirmed CSF leakage. The interobserver agreement for the MR myelography results between two radiologists was analysed using weighted kappa statistics. RESULTS A total of 136 patients (mean age, 48 years; 70 women) with suspected SIH were included. Of these patients, 120 (88%, 120/136) were confirmed to have CSF leakage. Of the patients with confirmed CSF leakage, 90 (75%, 90/120) had epidural fluid collection. The detection rate of MR myelography for CSF leakage was 88% (105/120). The interobserver agreement between the two readers for detecting CSF leakage (κ = 0.76) or epidural fluid collection (κ = 0.76) on MR myelography was high. Among 24 patients with normal brain MR imaging results, 16 had CSF leakage (67%, 16/24). CONCLUSIONS Non-invasive MR myelography without intrathecal gadolinium should be considered to detect CSF leakage in patients with suspected SIH.
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Affiliation(s)
- S J Lee
- Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea; Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - D Kim
- University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - C H Suh
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - W H Shim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H Heo
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S Jo
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S J Chung
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H S Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S J Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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15
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Abstract
PURPOSE OF REVIEW The purpose of this review article is to summarize the current in-vivo imaging techniques for the evaluation of the glymphatic function and discuss the factors influencing the glymphatic function and research directions in the future. RECENT FINDINGS The glymphatic system allows the clearance of metabolic waste from the central nervous system (CNS). The glymphatic pathway has been investigated using intrathecal or intravenous injection of a gadolinium-based contrast agent (GBCA) on MRI, so-called glymphatic MRI. The glymphatic MRI indirectly visualizes the dynamic CSF flow and evaluated the glymphatic function in the animal and human models. Several clinical and preclinical studies using glymphatic MRI have confirmed that the glymphatic function is impaired in neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, and idiopathic normal pressure hydrocephalus. Furthermore, physiologic process such as sleep facilitates the glymphatic clearance, thus clearing accumulation of protein deposition, such as amyloid or tau, potentially delaying the progression of neurodegenerative diseases. SUMMARY The glymphatic system plays a crucial role in clearing metabolic wastes in the brain. Glymphatic MR imaging using GBCA administration serves as a functional imaging tool to measure the glymphatic function and investigate various pathophysiologies of neurodegenerative diseases.
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Affiliation(s)
- Hyochul Lee
- Interdisciplinary Program in Cancer Biology, Seoul National University College of Medicine
- Department of Radiology, Seoul National University College of Medicine, and Seoul National University Hospital
| | - Seung Hong Choi
- Interdisciplinary Program in Cancer Biology, Seoul National University College of Medicine
- Department of Radiology, Seoul National University College of Medicine, and Seoul National University Hospital
- Center for Nanoparticle Research, Institute for Basic Science, and School of Chemical and Biological Engineering, Seoul National University, Seoul, Korea
| | - Yoshimi Anzai
- Department of Radiology and Imaging Sciences, University of Utah School of Medicine, Salt Lake City, Utah, USA
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16
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Diagnostic yield of MR myelography in patients with newly diagnosed spontaneous intracranial hypotension: a systematic review and meta-analysis. Eur Radiol 2022; 32:7843-7853. [PMID: 35538263 DOI: 10.1007/s00330-022-08845-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 04/18/2022] [Accepted: 04/22/2022] [Indexed: 01/03/2023]
Abstract
OBJECTIVES To investigate the pooled diagnostic yield of MR myelography in patients with newly diagnosed spontaneous intracranial hypotension (SIH). METHODS A literature search of the MEDLINE/PubMed and Embase databases was conducted until July 25, 2021, including studies with the following inclusion criteria: (a) population: patients with newly diagnosed SIH; (b) diagnostic modality: MR myelography or MR myelography with intrathecal gadolinium for evaluation of CSF leakage; (c) outcomes: diagnostic yield of MR myelography or MR myelography with intrathecal gadolinium. The risk of bias was evaluated using the Quality Assessment of Diagnostic Accuracy Studies-2 tool. DerSimonian-Laird random-effects modeling was used to calculate the pooled estimates. Subgroup analysis regarding epidural fluid collection and meta-regression were additionally performed. RESULTS Fifteen studies with 643 patients were included. Eight studies used MR myelography with intrathecal gadolinium, and 11 used MR myelography. The overall quality of the included studies was moderate. The pooled diagnostic yield of MR myelography was 86% (95% CI, 80-91%) and that of MR myelography with intrathecal gadolinium was 83% (95% CI, 51-96%). There was no significant difference in pooled diagnostic yield between MR myelography and MR myelography with intrathecal gadolinium (p = 0.512). In subgroup analysis, the pooled diagnostic yield of the epidural fluid collection was 91% (95% CI, 84-94%). In meta-regression, the diagnostic yield was unaffected regardless of consecutive enrollment, magnet strength, or 2D/3D. CONCLUSIONS MR myelography had a high diagnostic yield in patients with SIH. MR myelography is non-invasive and not inferior to MR myelography with intrathecal gadolinium. KEY POINTS • The pooled diagnostic yield of MR myelography was 86% (95% CI, 80-91%) in patients with spontaneous intracranial hypotension. • There was no significant difference in pooled diagnostic yield between MR myelography and MR myelography with intrathecal gadolinium. • MR myelography is non-invasive and not inferior to MR myelography with intrathecal gadolinium.
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17
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Giagkou N, Spanou I, Mitsikostas DD. Current perspectives on the recognition and diagnosis of low CSF pressure headache syndromes. Expert Rev Neurother 2022; 22:815-827. [PMID: 36453212 DOI: 10.1080/14737175.2022.2152674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
INTRODUCTION Headaches occur when cerebrospinal fluid (CSF) pressure drops following dural puncture or trauma or spontaneously. As the features of these headaches and their accompanying symptoms might not be typical, low CSF pressure headache syndromes, and spontaneous intracranial hypotension in particular, are often misdiagnosed and underdiagnosed. AREAS COVERED The aim of this narrative review is to summarize the most recent evidence regarding the clinical presentation and the diagnosis of low CSF pressure headache syndromes. EXPERT OPINION The clinical spectrum low CSF pressure headache syndromes varies significantly and key signs might be missing. Low CSF pressure headache syndromes should be included in the differential diagnosis of any case of refractory headache, even when the headache is not orthostatic, or there are normal neuroimaging findings, and/or lumbar puncture opening pressure is within normal limits. Future research should focus on controlled interventional studies on the treatment of low CSF pressure headache syndromes, which are currently lacking.
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Affiliation(s)
- Nikolaos Giagkou
- 1 Neurology Department, Aeginition Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioanna Spanou
- 1 Neurology Department, Aeginition Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimos D Mitsikostas
- 1 Neurology Department, Aeginition Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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18
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Gerasymchuk M, Labak C, Hoffer S, Nayate AP. “The up and down approach” to localize and exclude sites of intraspinal CSF leaks. Curr Probl Diagn Radiol 2022; 52:10-13. [DOI: 10.1067/j.cpradiol.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/05/2022] [Accepted: 08/22/2022] [Indexed: 11/22/2022]
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19
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Sundermann B, Billebaut B, Bauer J, Iacoban CG, Alykova O, Schülke C, Gerdes M, Kugel H, Neduvakkattu S, Bösenberg H, Mathys C. Practical Aspects of novel MRI Techniques in Neuroradiology: Part 2 - Acceleration Methods and Implications for Individual Regions. ROFO-FORTSCHR RONTG 2022; 194:1195-1203. [PMID: 35798335 DOI: 10.1055/a-1800-8789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Recently introduced MRI techniques facilitate accelerated examinations or increased resolution with the same duration. Further techniques offer homogeneous image quality in regions with anatomical transitions. The question arises whether and how these techniques can be adopted for routine diagnostic imaging. METHODS Narrative review with an educational focus based on current literature research and practical experiences of different professions involved (physicians, MRI technologists/radiographers, physics/biomedical engineering). Different hardware manufacturers are considered. RESULTS AND CONCLUSIONS Compressed sensing and simultaneous multi-slice imaging are novel acceleration techniques with different yet complimentary applications. They do not suffer from classical signal-to-noise-ratio penalties. Combining 3 D and acceleration techniques facilitates new broader examination protocols, particularly for clinical brain imaging. In further regions of the nervous systems mainly specific applications appear to benefit from recent technological improvements. KEY POINTS · New acceleration techniques allow for faster or higher resolution examinations.. · New brain imaging approaches have evolved, including more universal examination protocols.. · Other regions of the nervous system are dominated by targeted applications of recently introduced MRI techniques.. CITATION FORMAT · Sundermann B, Billebaut B, Bauer J et al. Practical Aspects of novel MRI Techniques in Neuroradiology: Part 2 - Acceleration Methods and Implications for Individual Regions. Fortschr Röntgenstr 2022; DOI: 10.1055/a-1800-8789.
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Affiliation(s)
- Benedikt Sundermann
- Institute of Radiology and Neuroradiology, Evangelisches Krankenhaus, Medical Campus University of Oldenburg, Germany.,Research Center Neurosensory Science, University of Oldenburg, Germany.,Clinic for Radiology, University Hospital Münster, Germany
| | - Benoit Billebaut
- Clinic for Radiology, University Hospital Münster, Germany.,School for Radiologic Technologists, University Hospital Münster, Germany
| | - Jochen Bauer
- Clinic for Radiology, University Hospital Münster, Germany
| | - Catalin George Iacoban
- Institute of Radiology and Neuroradiology, Evangelisches Krankenhaus, Medical Campus University of Oldenburg, Germany
| | - Olga Alykova
- Institute of Radiology and Neuroradiology, Evangelisches Krankenhaus, Medical Campus University of Oldenburg, Germany
| | | | - Maike Gerdes
- Institute of Radiology and Neuroradiology, Evangelisches Krankenhaus, Medical Campus University of Oldenburg, Germany
| | - Harald Kugel
- Clinic for Radiology, University Hospital Münster, Germany
| | | | - Holger Bösenberg
- Institute of Radiology and Neuroradiology, Evangelisches Krankenhaus, Medical Campus University of Oldenburg, Germany
| | - Christian Mathys
- Institute of Radiology and Neuroradiology, Evangelisches Krankenhaus, Medical Campus University of Oldenburg, Germany.,Research Center Neurosensory Science, University of Oldenburg, Germany.,Department of Diagnostic and Interventional Radiology, University of Düsseldorf, Germany
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20
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Roos C. Ipotensione intracranica spontanea. Neurologia 2022. [DOI: 10.1016/s1634-7072(21)45998-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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21
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Spontaneous intracranial hypotension: searching for the CSF leak. Lancet Neurol 2022; 21:369-380. [DOI: 10.1016/s1474-4422(21)00423-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/03/2021] [Accepted: 11/23/2021] [Indexed: 11/18/2022]
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22
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Chen HC, Chai JW, Wu CC, Chen PL, Teng CL. Magnetic resonance imaging predicted the therapeutic response of patients with spinal cerebrospinal fluid leakage undergoing targeted epidural blood patch. Br J Radiol 2022; 95:20210841. [PMID: 34762485 PMCID: PMC8722244 DOI: 10.1259/bjr.20210841] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE Most patients with spinal cerebrospinal fluid (CSF) leakage require an epidural blood patch (EBP); however, the response to treatment is varied. This study aimed to compare the MRI findings at follow-up between EBP effective and non-effective groups and to identify imaging findings that predict EBP treatment failure. METHODS We retrospectively reviewed 48 patients who received EBP treatment for spinal CSF leakage. These patients were stratified into two groups: EBP effective (n = 27) and EBP non-effective (n = 21) using the results of the 3 month MRI as the end point. RESULTS Compared to the EBP non-effective group, the patients in the EBP effective group had a lower spinal CSF leakage number (2.67 vs 12.48; p = 0.001), lower spinal epidural fluid accumulation levels (3.00 vs 7.48; p = 0.004), brain descend (11.11% vs 38.10%; p = 0.027), pituitary hyperemia (18.52% vs 57.14%; p = 0.007), and decreased likelihood of ≥three numbers of spinal CSF leakage (25.93% vs 90.48%; p = 0.001) in the post-EBP MRI. Clinical non-responsiveness (OR: 57.84; 95% CI: 3.47-972.54; p = 0.005) and ≥three numbers of spinal CSF leakage (OR: 15.13; 95% CI: 1.45-159.06; p = 0.023) were associated with EBP failure. Between these variables, ≥three numbers of spinal CSF leakage identified using the post-EBP MRI demonstrated greater sensitivity in predicting EBP failure compared to clinical non-responsiveness (90.48% vs 61.9%). CONCLUSION The number of spinal CSF leakage identified using the post-EBP MRI with a cut-off value of three is an effective predictor of EBP failure. ADVANCES IN KNOWLEDGE Compared to clinical responsiveness, the post-EBP MRI provided a more objective approach to predict the effectiveness of EBP treatment in patients with spinal CSF leakage.
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23
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Schievink WI, Maya MM, Moser F, Prasad R, Wadhwa V, Cruz R, Nuño M. Multiple Spinal CSF Leaks in Spontaneous Intracranial Hypotension: Do They Exist? Neurol Clin Pract 2021; 11:e691-e697. [PMID: 34840885 DOI: 10.1212/cpj.0000000000001084] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/03/2021] [Indexed: 12/17/2022]
Abstract
Objective To determine the frequency of multiple spinal CSF leaks in a recent group of patients with spontaneous intracranial hypotension (SIH) who were investigated with digital subtraction myelography (DSM). Methods This observational study was conducted using data from a prospectively maintained data base of patients who meet the International Classification of Headache Disorders, third edition, criteria for SIH. The patient population consisted of a consecutive group of 745 patients with SIH who underwent DSM between March 2009 and February 2020. Based on the results of DSM, participants were classified according to the type and number of spinal CSF leaks. Results Among 398 patients with SIH and extradural CSF on spinal imaging, multiplicity of CSF leaks was observed in none of 291 patients with type 1a ventral leaks and in 4 (6.2%) of 65 patients with type 1b (postero-) lateral leaks. Among 97 patients with SIH from spinal CSF-venous fistulas (type 3 leaks) who did not have extradural CSF on spinal imaging, 9 patients (9.3%) had multiple fistulas (p < 0.0001 for comparison between groups). Type 3 and type 1a or 1b CSF leaks coexisted in an additional 5 patients. Conclusions Among patients with SIH, multiplicity of CSF leaks was observed radiographically in none of the patients with ventral leaks, in 6% of patients with lateral leaks, and in 9% of patients with CSF-venous fistulas. These results suggest that patients with SIH can be reassured that the occurrence of multiple CSF leaks is negligible to uncommon at most, depending on the type of CSF leak.
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Affiliation(s)
- Wouter I Schievink
- Department of Neurosurgery (WIS, RBC) and Department of Imaging (MM, FGM, RSP, VSW), Cedars-Sinai Medical Center, Los Angeles, CA; and Department of Public Health Sciences (MN), University of California, Davis
| | - M Marcel Maya
- Department of Neurosurgery (WIS, RBC) and Department of Imaging (MM, FGM, RSP, VSW), Cedars-Sinai Medical Center, Los Angeles, CA; and Department of Public Health Sciences (MN), University of California, Davis
| | - Franklin Moser
- Department of Neurosurgery (WIS, RBC) and Department of Imaging (MM, FGM, RSP, VSW), Cedars-Sinai Medical Center, Los Angeles, CA; and Department of Public Health Sciences (MN), University of California, Davis
| | - Ravi Prasad
- Department of Neurosurgery (WIS, RBC) and Department of Imaging (MM, FGM, RSP, VSW), Cedars-Sinai Medical Center, Los Angeles, CA; and Department of Public Health Sciences (MN), University of California, Davis
| | - Vikram Wadhwa
- Department of Neurosurgery (WIS, RBC) and Department of Imaging (MM, FGM, RSP, VSW), Cedars-Sinai Medical Center, Los Angeles, CA; and Department of Public Health Sciences (MN), University of California, Davis
| | - Rachelle Cruz
- Department of Neurosurgery (WIS, RBC) and Department of Imaging (MM, FGM, RSP, VSW), Cedars-Sinai Medical Center, Los Angeles, CA; and Department of Public Health Sciences (MN), University of California, Davis
| | - Miriam Nuño
- Department of Neurosurgery (WIS, RBC) and Department of Imaging (MM, FGM, RSP, VSW), Cedars-Sinai Medical Center, Los Angeles, CA; and Department of Public Health Sciences (MN), University of California, Davis
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24
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Tay ASMS, Maya M, Moser FG, Nuño M, Schievink WI. Computed Tomography vs Heavily T2-Weighted Magnetic Resonance Myelography for the Initial Evaluation of Patients With Spontaneous Intracranial Hypotension. JAMA Neurol 2021; 78:1275-1276. [PMID: 34459855 DOI: 10.1001/jamaneurol.2021.2868] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | - Marcel Maya
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, California
| | - Franklin G Moser
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, California
| | - Miriam Nuño
- Department of Public Health Sciences, University of California, Davis
| | - Wouter I Schievink
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California
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25
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Luetzen N, Dovi-Akue P, Fung C, Beck J, Urbach H. Spontaneous intracranial hypotension: diagnostic and therapeutic workup. Neuroradiology 2021; 63:1765-1772. [PMID: 34297176 PMCID: PMC8528761 DOI: 10.1007/s00234-021-02766-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 07/04/2021] [Indexed: 11/17/2022]
Abstract
Spontaneous intracranial hypotension (SIH) is an orthostatic headache syndrome with typical MRI findings among which engorgement of the venous sinuses, pachymeningeal enhancement, and effacement of the suprasellar cistern have the highest diagnostic sensitivity. SIH is in almost all cases caused by spinal CSF leaks. Spinal MRI scans showing so-called spinal longitudinal extradural fluid (SLEC) are suggestive of ventral dural tears (type 1 leak) which are located with prone dynamic (digital subtraction) myelography. As around half of the ventral dural tears are located in the upper thoracic spine, additional prone dynamic CT myelography is often needed. Leaking nerve root sleeves typically associated with meningeal diverticulae (type 2 leaks) and CSF-venous fistulas (type 3 leaks) are proven via lateral decubitus dynamic digital subtraction or CT myelography: type 2 leaks are SLEC-positive if the tear is proximal and SLEC-negative if it is distal, and type 3 leaks are always SLEC-negative. Although 30–70% of SIH patients show marked improvement following epidural blood patches applied via various techniques definite cure mostly requires surgical closure of ventral dural tears and surgical ligations of leaking nerve root sleeves associated with meningeal diverticulae or CSF-venous fistulas. For the latter, transvenous embolization with liquid embolic agents via the azygos vein system is a novel and valuable therapeutic alternative.
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Affiliation(s)
- Niklas Luetzen
- Department of Neuroradiology, Medical Center, University of Freiburg, Breisacher Str. 64 , 79106, Freiburg, Germany
| | - Philippe Dovi-Akue
- Department of Neuroradiology, Medical Center, University of Freiburg, Breisacher Str. 64 , 79106, Freiburg, Germany
| | - Christian Fung
- Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg, Germany
| | - Juergen Beck
- Department of Neurosurgery, Medical Center, University of Freiburg, Freiburg, Germany
| | - Horst Urbach
- Department of Neuroradiology, Medical Center, University of Freiburg, Breisacher Str. 64 , 79106, Freiburg, Germany.
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26
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Madhavan AA, Carr CM, Benson JC, Brinjikji W, Diehn FE, Kim DK, Lehman VT, Liebo GB, Morris PP, Shlapak DP, Verdoorn JT, Morris JM. Diagnostic Yield of Intrathecal Gadolinium MR Myelography for CSF Leak Localization. Clin Neuroradiol 2021; 32:537-545. [PMID: 34292360 DOI: 10.1007/s00062-021-01060-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 06/23/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Intrathecal gadolinium magnetic resonance (MR) myelography can be used to localize various types of spinal cerebrospinal fluid (CSF) leaks; however, its diagnostic yield is not well known. We sought to determine the diagnostic yield of MR myelography in patients with spontaneous intracranial hypotension. METHODS A retrospective review was performed on all patients who had undergone intrathecal gadolinium MR myelography at our institution from 2002 to 2020 for suspected spinal CSF leak. The MR myelography images were reviewed for the presence or absence of a spinal CSF leak site. Images were also evaluated for the presence an extradural fluid collection. RESULTS A total of 97 patients were included in the final cohort. The average age was 52.6 years; 67.0% were female, 4 patients underwent 2 examinations each, yielding a total of 101 MR myelograms. The source of a spinal CSF leak was localized in 14 patients. The diagnostic yield for CSF leak localization on intrathecal gadolinium MR myelography was 14/101 (13.9%) per GdM examination and 14/97 (14.4%) per patient. Among the subset of patients without extradural fluid collections, the yield was 15.7% per examination. All detected leaks were either CSF-venous fistulas or distal nerve root sleeve tears. CONCLUSION Intrathecal gadolinium MR myelography is capable of localizing CSF-venous fistulas and distal nerve root sleeve tears; however, our data show that it has a limited diagnostic yield. We suggest that other modalities may be a better first step before attempting intrathecal gadolinium MR myelography.
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Affiliation(s)
- Ajay A Madhavan
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA.
| | - Carrie M Carr
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - John C Benson
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Felix E Diehn
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Dong Kun Kim
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Vance T Lehman
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Greta B Liebo
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Pearse P Morris
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Darya P Shlapak
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Jared T Verdoorn
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
| | - Jonathan M Morris
- Department of Radiology, Mayo Clinic, 200 First St SW, MN 55905, Rochester, USA
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D'Antona L, Jaime Merchan MA, Vassiliou A, Watkins LD, Davagnanam I, Toma AK, Matharu MS. Clinical Presentation, Investigation Findings, and Treatment Outcomes of Spontaneous Intracranial Hypotension Syndrome: A Systematic Review and Meta-analysis. JAMA Neurol 2021; 78:329-337. [PMID: 33393980 PMCID: PMC7783594 DOI: 10.1001/jamaneurol.2020.4799] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Question What are the clinical presentation, investigation findings, and treatment outcomes of spontaneous intracranial hypotension? Findings This systematic review and meta-analysis of 144 articles provides a summary of the evidence on spontaneous intracranial hypotension and demonstrates that a significant minority of patients may have nonorthostatic headache, normal lumbar punctures, or normal imaging results. Treatment with 1 epidural blood patch is often successful, with large-volume blood patches giving better outcomes. Meaning A diagnosis of spontaneous intracranial hypotension should not be excluded based on the absence of one of its typical features; large epidural blood patches should be attempted if conservative treatment has failed. Importance Spontaneous intracranial hypotension (SIH) is a highly disabling but often misdiagnosed disorder. The best management options for patients with SIH are still uncertain. Objective To provide an objective summary of the available evidence on the clinical presentation, investigations findings, and treatment outcomes for SIH. Data Sources Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guideline–compliant systematic review and meta-analysis of the literature on SIH. Three databases were searched from inception to April 30, 2020: PubMed/MEDLINE, Embase, and Cochrane. The following search terms were used in each database: spontaneous intracranial hypotension, low CSF syndrome, low CSF pressure syndrome, low CSF volume syndrome, intracranial hypotension, low CSF pressure, low CSF volume, CSF hypovolemia, CSF hypovolaemia, spontaneous spinal CSF leak, spinal CSF leak, and CSF leak syndrome. Study Selection Original studies in English language reporting 10 or more patients with SIH were selected by consensus. Data Extraction and Synthesis Data on clinical presentation, investigations findings, and treatment outcomes were collected and summarized by multiple observers. Random-effect meta-analyses were used to calculate pooled estimates of means and proportions. Main Outcomes and Measures The predetermined main outcomes were the pooled estimate proportions of symptoms of SIH, imaging findings (brain and spinal imaging), and treatment outcomes (conservative, epidural blood patches, and surgical). Results Of 6878 articles, 144 met the selection criteria and reported on average 53 patients with SIH each (range, 10-568 patients). The most common symptoms were orthostatic headache (92% [95% CI, 87%-96%]), nausea (54% [95% CI, 46%-62%]), and neck pain/stiffness (43% [95% CI, 32%-53%]). Brain magnetic resonance imaging was the most sensitive investigation, with diffuse pachymeningeal enhancement identified in 73% (95% CI, 67%-80%) of patients. Brain magnetic resonance imaging findings were normal in 19% (95% CI, 13%-24%) of patients. Spinal neuroimaging identified extradural cerebrospinal fluid in 48% to 76% of patients. Digital subtraction myelography and magnetic resonance myelography with intrathecal gadolinium had high sensitivity in identifying the exact leak site. Lumbar puncture opening pressures were low, normal (60-200 mm H2O), and high in 67% (95% CI, 54%-80%), 32% (95% CI, 20%-44%), and 3% (95% CI, 1%-6%), respectively. Conservative treatment was effective in 28% (95% CI, 18%-37%) of patients and a single epidural blood patch was successful in 64% (95% CI, 56%-72%). Large epidural blood patches (>20 mL) had better success rates than small epidural blood patches (77% [95% CI, 63%-91%] and 66% [95% CI, 55%-77%], respectively). Conclusions and Relevance Spontaneous intracranial hypotension should not be excluded on the basis of a nonorthostatic headache, normal neuroimaging findings, or normal lumbar puncture opening pressure. Despite the heterogeneous nature of the studies available in the literature and the lack of controlled interventional studies, this systematic review offers a comprehensive and objective summary of the evidence on SIH that could be useful in guiding clinical practice and future research.
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Affiliation(s)
- Linda D'Antona
- Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, London, United Kingdom.,UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Melida Andrea Jaime Merchan
- Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, London, United Kingdom
| | - Anna Vassiliou
- Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, London, United Kingdom
| | - Laurence Dale Watkins
- Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, London, United Kingdom
| | - Indran Davagnanam
- UCL Queen Square Institute of Neurology, London, United Kingdom.,Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, London, United Kingdom
| | - Ahmed Kassem Toma
- Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, London, United Kingdom.,UCL Queen Square Institute of Neurology, London, United Kingdom
| | - Manjit Singh Matharu
- UCL Queen Square Institute of Neurology, London, United Kingdom.,Headache and Facial Pain Group, National Hospital for Neurology and Neurosurgery, London, United Kingdom
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28
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Piechowiak EI, Pospieszny K, Haeni L, Jesse CM, Peschi G, Mosimann PJ, Kaesmacher J, Mordasini P, Raabe A, Ulrich CT, Beck J, Gralla J, Dobrocky T. Role of Conventional Dynamic Myelography for Detection of High-Flow Cerebrospinal Fluid Leaks. Clin Neuroradiol 2020; 31:633-641. [PMID: 32845353 PMCID: PMC8463391 DOI: 10.1007/s00062-020-00943-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 07/23/2020] [Indexed: 11/27/2022]
Abstract
Background Spinal imaging is essential to identify and localize cerebrospinal fluid (CSF) leaks in spontaneous intracranial hypotension (SIH) patients when targeted treatment is necessary. Purpose Provide an in-depth presentation of the conventional dynamic myelography (CDM) technique for localizing spinal CSF leaks in SIH patients. Material and Methods Consecutive SIH patients with a CSF leak confirmed on CDM and postmyelography computed tomography (CT) investigated at our institution between 2013 and 2019 were retrospectively analyzed. Intraoperative reports were reviewed to confirm the accuracy of CDM. Results In total, 62 patients (mean age 45 years) were included; 48 with a ventral dural tear, 12 with a meningeal diverticulum, and in 2 patients positive for spinal longitudinal extradural CSF collection the site remained unclear. The leak was identified during the first and the second CDM in 43 and 17 patients, respectively. The use of CDM correctly identified the site of the CSF leak in all but one patient undergoing surgical closure (45/46, 98%). The mean fluoroscopy time was 7.8 min (range 1.8–14.4 min) with a radiation dose for a single examination of 310 mGy (range 28–1237 mGy). Conclusion The CDM procedure has a high accuracy for spinal CSF leak localization including dural tears and spinal nerve diverticula. It is the technique with the highest temporal resolution, is robust to breathing artifacts, allows great flexibility regarding patient positioning, compares favorably to other dynamic examinations with respect to the radiation dose and does not require general anesthesia. For CSF venous fistulas, however, other dynamic examinations, such as digital subtraction myelography, seem more appropriate. Video online The online version of this article contains 4 videos. The article and the videos are online available (10.1007/s00062-020-00943-w). The videos can be found in the article back matter as “Electronic Supplementary Material”.
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Affiliation(s)
- Eike I Piechowiak
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, 3010, Bern, Switzerland
| | - Katarzyna Pospieszny
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, 3010, Bern, Switzerland
| | - Levin Haeni
- Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Christopher M Jesse
- Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Giovanni Peschi
- Department of Interventional, Pediatric and Diagnostic Radiology, Inselspital, University Hospital, University of Bern, Bern, Switzerland
| | - Pascal J Mosimann
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, 3010, Bern, Switzerland
| | - Johannes Kaesmacher
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, 3010, Bern, Switzerland
- Department of Interventional, Pediatric and Diagnostic Radiology, Inselspital, University Hospital, University of Bern, Bern, Switzerland
| | - Pasquale Mordasini
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, 3010, Bern, Switzerland
| | - Andreas Raabe
- Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Christian T Ulrich
- Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jürgen Beck
- Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department of Neurosurgery, Medical Center-University of Freiburg, Freiburg, Germany
| | - Jan Gralla
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, 3010, Bern, Switzerland
| | - Tomas Dobrocky
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Freiburgstrasse 8, 3010, Bern, Switzerland.
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29
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Urbach H, Fung C, Dovi-Akue P, Lützen N, Beck J. Spontaneous Intracranial Hypotension. DEUTSCHES ARZTEBLATT INTERNATIONAL 2020; 117:480-487. [PMID: 33050997 DOI: 10.3238/arztebl.2020.0480] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Spontaneous intracranial hypotension (SIH) is an underdiagnosed disease. Its incidence is estimated at 5 per 100 000 persons per year. METHODS This review is based on a selective literature search in PubMed covering the years 2000-2019, as well as on the authors' personal experience. RESULTS The diagnostic and therapeutic methods discussed here are supported by level 4 evidence. SIH is caused by spinal leakage of cerebrospinal fluid (CSF) out of ventral dural tears or nerve root diverticula, or, in 2-5% of cases, through a fistula leading directly into the periradicular veins (CSF-venous fistula). In half of all patients, no CSF leak is demonstrable. A low CSF opening pressure on lumbar puncture is present in only one-third of patients; imaging studies are thus needed to confirm and localize a spinal CSF leak. Half of all patients in whom myelographic computed tomography (CT) reveals contrast medium reaching the epidural space have ventral dural tears, which tend to be located at upper thoracic spinal levels. Epidural blood patches applied under fluoroscopic or CT guidance can seal the CSF leak in 30-70% of patients, but 90% of patients with ventral dural tears will need operative closure. Some patients who have no visible epidural contrast medium on CT presumably do not have SIH, while others do, in fact, have a CSF leak from a diverticulum or a CSF-venous fistula and will need to have the site of the leak demonstrated with the aid of further studies, such as dynamic (subtraction) myelography in the lateral decubitus position. CONCLUSION The management of patients with SIH calls for complementary imaging studies to demonstrate the causative spinal CSF leak. Often, successful treatment requires surgical closure of the leak. In view of the sparse evidence available to date, controlled studies should be performed.
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Affiliation(s)
- Horst Urbach
- Department of Neuroradiology, Universitätsklinikum Freiburg
| | - Christian Fung
- Department of Neurosurgery, Universitätsklinikum Freiburg
| | | | - Niklas Lützen
- Department of Neuroradiology, Universitätsklinikum Freiburg
| | - Jürgen Beck
- Department of Neurosurgery, Universitätsklinikum Freiburg
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