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Wu JW, Wang SJ. Spontaneous Intracranial Hypotension: Clinical Presentation, Diagnosis, and Treatment Strategies. Neurol Clin 2024; 42:473-486. [PMID: 38575260 DOI: 10.1016/j.ncl.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Spontaneous intracranial hypotension (SIH) typically presents as an acute orthostatic headache during an upright position, secondary to spinal cerebrospinal fluid leaks. New evidence indicates that a lumbar puncture may not be essential for diagnosing every patient with SIH. Spinal neuroimaging protocols used for diagnosing and localizing spinal cerebrospinal fluid leaks include brain/spinal MRI, computed tomography myelography, digital subtraction myelography, and radionuclide cisternography. Complications of SIH include subdural hematoma, cerebral venous thrombosis, and superficial siderosis. Treatment options encompass conservative management, epidural blood patches, and surgical interventions. The early application of epidural blood patches in all patients with SIH is suggested.
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Affiliation(s)
- Jr-Wei Wu
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shi-Pai Road, Taipei, 11217, Taiwan; Center for Quality Management, Taipei Veterans General Hospital, No. 201, Sec. 2, Shi-Pai Road, Taipei, 11217, Taiwan; College of Medicine, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Shi-Pai Road, Taipei, 11217, Taiwan
| | - Shuu-Jiun Wang
- Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shi-Pai Road, Taipei, 11217, Taiwan; College of Medicine, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Shi-Pai Road, Taipei, 11217, Taiwan; Brain Research Center, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Shi-Pai Road, Taipei, 11217, Taiwan.
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Faghani S, Moassefi M, Madhavan AA, Mark IT, Verdoorn JT, Erickson BJ, Benson JC. Identifying Patients with CSF-Venous Fistula Using Brain MRI: A Deep Learning Approach. AJNR Am J Neuroradiol 2024; 45:439-443. [PMID: 38423747 DOI: 10.3174/ajnr.a8173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/12/2023] [Indexed: 03/02/2024]
Abstract
BACKGROUND AND PURPOSE Spontaneous intracranial hypotension is an increasingly recognized condition. Spontaneous intracranial hypotension is caused by a CSF leak, which is commonly related to a CSF-venous fistula. In patients with spontaneous intracranial hypotension, multiple intracranial abnormalities can be observed on brain MR imaging, including dural enhancement, "brain sag," and pituitary engorgement. This study seeks to create a deep learning model for the accurate diagnosis of CSF-venous fistulas via brain MR imaging. MATERIALS AND METHODS A review of patients with clinically suspected spontaneous intracranial hypotension who underwent digital subtraction myelogram imaging preceded by brain MR imaging was performed. The patients were categorized as having a definite CSF-venous fistula, no fistula, or indeterminate findings on a digital subtraction myelogram. The data set was split into 5 folds at the patient level and stratified by label. A 5-fold cross-validation was then used to evaluate the reliability of the model. The predictive value of the model to identify patients with a CSF leak was assessed by using the area under the receiver operating characteristic curve for each validation fold. RESULTS There were 129 patients were included in this study. The median age was 54 years, and 66 (51.2%) had a CSF-venous fistula. In discriminating between positive and negative cases for CSF-venous fistulas, the classifier demonstrated an average area under the receiver operating characteristic curve of 0.8668 with a standard deviation of 0.0254 across the folds. CONCLUSIONS This study developed a deep learning model that can predict the presence of a spinal CSF-venous fistula based on brain MR imaging in patients with suspected spontaneous intracranial hypotension. However, further model refinement and external validation are necessary before clinical adoption. This research highlights the substantial potential of deep learning in diagnosing CSF-venous fistulas by using brain MR imaging.
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Affiliation(s)
- Shahriar Faghani
- From the Radiology Informatics Lab, Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | - Mana Moassefi
- From the Radiology Informatics Lab, Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | | | - Ian T Mark
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | | | - Bradley J Erickson
- From the Radiology Informatics Lab, Department of Radiology, Mayo Clinic, Rochester, Minnesota
| | - John C Benson
- Department of Radiology, Mayo Clinic, Rochester, Minnesota
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Carroll IR, Lansinger O, Do HM, Dodd R, Mahaney K, Li D. Mechanism of chronic iatrogenic CSF leak following dural puncture-ventral dural leak: case report. Reg Anesth Pain Med 2024; 49:293-297. [PMID: 38388018 DOI: 10.1136/rapm-2023-105197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 12/21/2023] [Indexed: 02/24/2024]
Abstract
BACKGROUND Postdural puncture headache has been traditionally viewed as benign, self-limited, and highly responsive to epidural blood patching (EBP) when needed. A growing body of data from patients experiencing unintended dural puncture (UDP) in the setting of attempted labor epidural placement suggests a minority of patients will have more severe and persistent symptoms. However, the mechanisms accounting for the failure of EBP following dural puncture remain obscure. An understanding of these potential mechanisms is critical to guide management decisions in the face of severe and persistent cerebrospinal fluid (CSF) leak. CASE PRESENTATION We report the case of a peripartum patient who developed a severe and persistent CSF leak unresponsive to multiple EBPs following a UDP during epidural catheter placement for labor analgesia. Lumbar MRI revealed a ventral rather than dorsal epidural fluid collection suggesting that the needle had crossed the thecal sac and punctured the ventral dura, creating a puncture site not readily accessible to blood injected in the dorsal epidural space. The location of this persistent ventral dural defect was confirmed with digital subtraction myelography, permitting a transdural surgical exploration and repair of the ventral dura with resolution of the severe intracranial hypotension. CONCLUSIONS A ventral rather than dorsal dural puncture is one mechanism that may contribute to both severe and persistent spinal CSF leak with resulting intracranial hypotension following a UDP.
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Affiliation(s)
- Ian R Carroll
- Department of Anesthesiology, Stanford University, Stanford, California, USA
| | - Olivia Lansinger
- Brigham and Women's Hospital Department of Anesthesiology Perioperative and Pain Medicine, Boston, Massachusetts, USA
| | - Huy M Do
- Departments of Radiology, Neurosurgery and Otolaryngology, Stanford University School of Medicine, Stanford, California, USA
| | - Rob Dodd
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, California, USA
| | - Kelly Mahaney
- Department of Neurosurgery, Department of Pediatric Neurosurgery, Stanford University School of Medicine, Stanford, California, USA
| | - Daphne Li
- Advocate Lutheran General Hospital, Park Ridge, Illinois, USA
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Shah GV. Editorial Comment: Increasing Sensitivity in Detection of CSF-Venous Fistulas in Patients With Spontaneous Intracranial Hypotension. AJR Am J Roentgenol 2024; 222:e2431004. [PMID: 38380855 DOI: 10.2214/ajr.24.31004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
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Rohatgi VK, Robbins MS, Schievink WI, Chazen JL. Spontaneous absorption of osteophytic calcification associated with chronic dural tear and ventral spinal CSF leak. Neuroradiol J 2024; 37:257-260. [PMID: 37387398 PMCID: PMC10973820 DOI: 10.1177/19714009231187360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023] Open
Abstract
Spontaneous intracranial hypotension (SIH) is associated with cerebrospinal fluid (CSF) hypovolemia, often from a traumatic dural tear from a calcified spinal osteophyte. Visualizing osteophytes on CT imaging can guide decision making on candidate leak sites. We report the atypical case of a 41-year-old woman whose ventral CSF leak was associated with an osteophyte that resorbed over an 18-month period. Full workup and treatment were delayed due to unexpected pregnancy and completion of gestational cycle with delivery of a healthy term infant. The patient initially presented with persistent orthostatic headaches with nausea and blurred vision. Initial MRI suggested brain sagging among other findings consistent with SIH. CT myelogram showed an extensive thoracic CSF leak with a prominent ventral T11-T12 osteophyte and multiple small disc herniations. The patient did not respond to epidural blood patches and deferred additional imaging due to her pregnancy. CT myelography performed 5 months post-partum showed an absence of the osteophyte; a follow-up digital subtraction myelogram performed 10 months post-partum showed evidence of source leak at T11-T12 level. T11-T12 laminectomy visualized and repaired a 5 mm ventral dural defect with symptom resolution. This report highlights the potential for a resorbed osteophyte to be the causative agent for long-standing dural tears that do not show visible calcifications on myelography.
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Affiliation(s)
- Varun K Rohatgi
- Department of Radiology, New York-Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
| | - Matthew S Robbins
- Department of Neurology, New York-Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
| | - Wouter I Schievink
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - J Levi Chazen
- Department of Radiology, Hospital of Special Surgery, New York, NY, USA
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Abboud T, Behme D, Schatlo B, Rohde V, von der Brelie C. Targeted Epidural Blood Patch Injection Through a Mini-Open Approach for Treatment of Spontaneous Intracranial Hypotension. Oper Neurosurg (Hagerstown) 2024; 26:398-405. [PMID: 37888978 DOI: 10.1227/ons.0000000000000974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/14/2023] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Spontaneous intracranial hypotension is recognized as a cause for refractory headache. Treatment can range from blind blood patch injection to microsurgical repair of the cerebrospinal fluid (CSF) leak. The objective of the study was to investigate the safety and efficacy of the targeted blood patch injection (TBPI) technique through a mini-open approach in treatment of refractory intracranial hypotension. METHODS We retrospectively reviewed cases of 20 patients who were treated for spontaneous intracranial hypotension at our institute between 2011 and 2022. Head and spine MRI and whole-spine myelography were performed in an attempt to localize the CSF leak. All patients underwent implantation of two epidural drains above and beneath the index level through a minimally invasive interlaminar microsurgical approach under general anesthesia. Then, blood patch was injected under clinical surveillance. Treatment success and surgical complications were evaluated postoperatively and at follow-up. RESULTS Patients presented with orthostatic headache, vertigo, sensory deficits, and hypacusis (95%, 15%, 15%, and 10%, respectively). Subdural effusions were present in 65% of the cases. A CSF leak was identified in all patients. The exact site of the CSF leak could be identified in 80% of cases. TBPI was performed with an average blood amount of 37.5 mL. A significant improvement of symptoms was reported in 90% of the cases. A total of 15% of the patients showed recurrent symptoms and underwent a second TBPI, resulting in symptom relief. No therapy-related complications were reported. CONCLUSION TBPI is a safe and efficient treatment for spontaneous intracranial hypotension. It is performed in a minimally invasive procedure and can be repeated, if necessary, with a very low-risk profile.
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Affiliation(s)
- Tammam Abboud
- Department of Neurosurgery, University Medical Center Göttingen, Göttingen , Germany
| | - Daniel Behme
- University Clinic for Neuroradiology, University Hospital Magdeburg, Magdeburg , Germany
| | - Bawarjan Schatlo
- Department of Neurosurgery, University Medical Center Göttingen, Göttingen , Germany
| | - Veit Rohde
- Department of Neurosurgery, University Medical Center Göttingen, Göttingen , Germany
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Carroll I, Schievink W. Progressive superficial siderosis despite complete remission of intracranial hypotension symptoms following epidural patching: Case report. Headache 2024; 64:460-463. [PMID: 38613228 DOI: 10.1111/head.14697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/06/2024] [Accepted: 03/01/2024] [Indexed: 04/14/2024]
Abstract
Spontaneous intracranial hypotension (SIH) commonly results from ventral spinal cerebrospinal fluid (CSF) leaks and epidural patches are advocated as first-line treatment. Complications such as superficial siderosis can arise but have previously been reported only in the context of long-term persistent, ongoing, CSF leak and SIH. We report a case of a patient with SIH from a ventral spinal CSF leak that was treated with epidural patching and experienced complete resolution of SIH. Four years later SIH symptoms recurred, and brain magnetic resonance imaging unexpectedly showed the interval accumulation of hemosiderin pigmentation on the cerebellum and brainstem during the period when the patient was without symptoms of SIH. This case uniquely demonstrates the progression of superficial siderosis despite the apparent resolution of SIH. Our findings suggest two divergent pathophysiological outcomes from spinal ventral dural tear: (1) CSF loss causing SIH; and (2) persistent low-level bleeding arising from the spinal dural tear leading to superficial siderosis. These divergent pathophysiologies had a discordant response to epidural patching. Epidural patching successfully treated the SIH but did not prevent the progression of superficial siderosis, indicating that some patients may require more than epidural patching despite symptom resolution. This case highlights the need for post-treatment monitoring protocols in patients with ventral spinal CSF leaks and SIH and raises important questions about the adequacy of epidural patching in certain SIH cases arising from ventral spinal CSF leak.
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Affiliation(s)
- Ian Carroll
- Stanford Headache Clinic, Department of Anesthesiology, Perioperative and Pain Medicine, Stanford School of Medicine, Stanford University, Palo Alto, California, USA
| | - Wouter Schievink
- Department of Neurosurgery, Cedar Sinai Medical Center, Los Angeles, California, USA
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Lee SH, Lee J, Kim DW, Kim DH, Ahn SJ, Choi MG, Jo S, Suh CH, Chung SJ. Factors to predict recurrence after epidural blood patch in patients with spontaneous intracranial hypotension. Headache 2024; 64:380-389. [PMID: 38634709 DOI: 10.1111/head.14703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 01/10/2024] [Accepted: 01/16/2024] [Indexed: 04/19/2024]
Abstract
OBJECTIVES This study aimed to identify predictors for the recurrence of spontaneous intracranial hypotension (SIH) after epidural blood patch (EBP). BACKGROUND Epidural blood patch is the main treatment option for SIH; however, the characteristics of patients who experience relapse after successful EBP treatment for SIH remain understudied. METHODS In this exploratory, retrospective, case-control study, we included 19 patients with SIH recurrence after EBP and 36 age- and sex-matched patients without recurrence from a single tertiary medical institution. We analyzed clinical characteristics, neuroimaging findings, and volume changes in intracranial structures after EBP treatment. Machine learning methods were utilized to predict the recurrence of SIH after EBP treatment. RESULTS There were no significant differences in clinical features between the recurrence and no-recurrence groups. Among brain magnetic resonance imaging signs, diffuse pachymeningeal enhancement and cerebral venous dilatation were more prominent in the recurrence group than no-recurrence group after EBP (14/19 [73%] vs. eight of 36 [22%] patients, p = 0.001; 11/19 [57%] vs. seven of 36 [19%] patients, p = 0.010, respectively). The midbrain-pons angle decreased in the recurrence group compared to the no-recurrence group after EBP, at a mean (standard deviation [SD]) of -12.0 [16.7] vs. +1.8[18.3]° (p = 0.048). In volumetric analysis, volume changes after EBP were smaller in the recurrence group than in the no-recurrence group in intracranial cerebrospinal fluid (mean [SD] -11.6 [15.3] vs. +4.8 [17.1] mL, p = 0.001) and ventricles (mean [SD] +1.0 [2.0] vs. +2.0 [2.5] mL, p = 0.003). Notably, the random forest classifier indicated that the model constructed with brain volumetry was more accurate in discriminating SIH recurrence (area under the curve = 0.80 vs. 0.52). CONCLUSION Our study suggests that volumetric analysis of intracranial structures may aid in predicting recurrence after EBP treatment in patients with SIH.
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Affiliation(s)
- Seung Hyun Lee
- Department of Neurology, Seoul Medical Center, Seoul, South Korea
| | - Jooyoung Lee
- Department of Applied Statistics, Chung-Ang University, Seoul, South Korea
| | - Da-Woon Kim
- Department of Applied Statistics, Chung-Ang University, Seoul, South Korea
| | - Dong Hyun Kim
- Department of Neurology, Seoul Medical Center, Seoul, South Korea
| | - Sung Jae Ahn
- Department of Neurology, Seoul Medical Center, Seoul, South Korea
| | - Moon Gwan Choi
- Department of Neurology, Seoul Medical Center, Seoul, South Korea
| | - Sungyang Jo
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Chong Hyun Suh
- Department of Radiology and Research institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sun J Chung
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Schwartz FR, Kranz PG, Malinzak MD, Cox DN, Ria F, McCabe C, Harrawood B, Leithe LG, Samei E, Amrhein TJ. Myelography Using Energy-Integrating Detector CT Versus Photon-Counting Detector CT for Detection of CSF-Venous Fistulas in Patients With Spontaneous Intracranial Hypotension. AJR Am J Roentgenol 2024; 222:e2330673. [PMID: 38294163 DOI: 10.2214/ajr.23.30673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
BACKGROUND. CSF-venous fistulas (CVFs), which are an increasingly recognized cause of spontaneous intracranial hypotension (SIH), are often diminutive in size and exceedingly difficult to detect by conventional imaging. OBJECTIVE. This purpose of this study was to compare energy-integrating detector (EID) CT myelography and photon-counting detector (PCD) CT myelography in terms of image quality and diagnostic performance for detecting CVFs in patients with SIH. METHODS. This retrospective study included 38 patients (15 men and 23 women; mean age, 55 ± 10 [SD] years) with SIH who underwent both clinically indicated EID CT myelography (slice thickness, 0.625 mm) and PCD CT myelography (slice thickness, 0.2 mm; performed in ultrahigh-resolution mode) to assess for CSF leak. Three blinded radiologists reviewed examinations in random order, assessing image noise, discernibility of spinal nerve root sleeves, and overall image quality (each assessed using a scale of 0-100, with 100 denoting highest quality) and recording locations of the CVFs. Definite CVFs were defined as CVFs described in CT myelography reports using unequivocal language and having an attenuation value greater than 70 HU. RESULTS. For all readers, PCD CT myelography, in comparison with EID CT myelography, showed higher mean image noise (reader 1: 69.9 ± 18.5 [SD] vs 37.6 ± 15.2; reader 2: 59.5 ± 8.7 vs 49.3 ± 12.7; and reader 3: 57.6 ± 13.2 vs 42.1 ± 16.6), higher mean nerve root sleeve discernibility (reader 1: 81.6 ± 21.7 [SD] vs 30.4 ± 13.6; reader 2: 83.6 ± 10 vs 70.1 ± 18.9; and reader 3: 59.6 ± 13.5 vs 50.5 ± 14.4), and higher mean overall image quality (reader 1: 83.2 ± 20.0 [SD] vs 38.1 ± 13.5; reader 2: 80.1 ± 10.1 vs 72.4 ± 19.8; and reader 3: 57.8 ± 11.2 vs 51.9 ± 13.6) (all p < .05). Eleven patients had a definite CVF. Sensitivity and specificity of EID CT myelography and PCD CT myelography for the detection of definite CVF were 45% and 96% versus 64% and 85%, respectively, for reader 1; 36% and 100% versus 55% and 96%, respectively, for reader 2; and 57% and 100% versus 55% and 93%, respectively, for reader 3. The sensitivity was significantly higher for PCD CT myelography than for EID CT myelography for reader 1 and reader 2 (both p < .05) and was not significantly different between the two techniques for reader 3 (p = .45); for all three readers, specificity was not significantly different between the two modalities (all p > .05). CONCLUSION. In comparison with EID CT myelography, PCD CT myelography yielded significantly improved image quality with significantly higher sensitivity for CVFs (for two of three readers), without significant loss of specificity. CLINICAL IMPACT. The findings support a potential role for PCD CT myelography in facilitating earlier diagnosis and targeted treatment of SIH, avoiding high morbidity during potentially prolonged diagnostic workups.
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Affiliation(s)
- Fides R Schwartz
- Department of Radiology, Duke University Health System, Durham, NC
| | - Peter G Kranz
- Department of Radiology, Duke University Health System, Durham, NC
| | | | - David N Cox
- Department of Radiology, Ravin Advanced Imaging Laboratories, Duke University Health System, Durham, NC
| | - Francesco Ria
- Department of Radiology, Ravin Advanced Imaging Laboratories, Duke University Health System, Durham, NC
| | - Cindy McCabe
- Department of Radiology, Ravin Advanced Imaging Laboratories, Duke University Health System, Durham, NC
| | - Brian Harrawood
- Department of Radiology, Ravin Advanced Imaging Laboratories, Duke University Health System, Durham, NC
| | - Linda G Leithe
- Department of Radiology, Duke University Health System, Durham, NC
| | - Ehsan Samei
- Department of Radiology, Duke University Health System, Durham, NC
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Cheema S, Mehta D, Qureshi A, Sayal P, Kamourieh S, Davagnanam I, Matharu M. Spontaneous intracranial hypotension. Pract Neurol 2024; 24:98-105. [PMID: 38135500 PMCID: PMC10958270 DOI: 10.1136/pn-2023-003986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2023] [Indexed: 12/24/2023]
Abstract
Spontaneous intracranial hypotension (SIH) is a highly disabling but treatable secondary cause of headache. Recent progress in neuroradiological techniques has catalysed understanding of its pathophysiological basis and clinical diagnosis, and facilitated the development of more effective investigation and treatment methods. A UK-based specialist interest group recently produced the first multidisciplinary consensus guideline for the diagnosis and treatment of SIH. Here, we summarise a practical approach to its clinical and radiological diagnosis, symptomatic and non-targeted interventional treatment, radiological identification of leak site and targeted treatment of the leak once it has been localised.
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Affiliation(s)
- Sanjay Cheema
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, London, UK
- Headache and Facial Pain Group, National Hospital for Neurology and Neurosurgery, London, UK
| | - Dwij Mehta
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, London, UK
- Headache and Facial Pain Group, National Hospital for Neurology and Neurosurgery, London, UK
| | - Ayman Qureshi
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, London, UK
| | - Parag Sayal
- Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, London, UK
| | - Salwa Kamourieh
- Headache and Facial Pain Group, National Hospital for Neurology and Neurosurgery, London, UK
| | - Indran Davagnanam
- Lysholm Department of Neuroradiology, National Hospital for Neurology and Neurosurgery, London, UK
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, London, UK
| | - Manjit Matharu
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, London, UK
- Headache and Facial Pain Group, National Hospital for Neurology and Neurosurgery, London, UK
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Boto J, Vargas MI. A new modified technique of dynamic CT myelography to detect dural tears in spontaneous intracranial hypotension. J Neuroradiol 2024; 51:210-213. [PMID: 37499791 DOI: 10.1016/j.neurad.2023.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/03/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
We propose a modified dynamic CT-myelography technique for patients with fast CSF leaks caused by ventral dural tears in order to reduce radiation exposure and complications. A fluoroscopy-guided lumbar puncture using an epidural anesthesia kit replaces a CT-guided lumbar puncture, and a smaller volume of less concentrated contrast media is used. This approach has advantages, including speeding up the procedure, reduced radiation exposure, and elimination of the risk of contrast injection into the epidural space.
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Affiliation(s)
- José Boto
- Division of Neuroradiology, Geneva University Hospital and Faculty of Medicine of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland.
| | - Maria Isabel Vargas
- Division of Neuroradiology, Geneva University Hospital and Faculty of Medicine of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
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Kim YS, Joo SP, Ahn KH, Kim TS. Spontaneous intracranial hypotension presenting with bilateral subdural hematoma: Decision-making and treatment strategies. J Clin Neurosci 2024; 121:77-82. [PMID: 38367404 DOI: 10.1016/j.jocn.2024.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/30/2023] [Accepted: 02/08/2024] [Indexed: 02/19/2024]
Abstract
BACKGROUND The timing and decision to drain subdural hematoma (SDH) in spontaneous intracranial hypotension (SIH) remains a dilemma. We reviewed our experience of bilateral SDH secondary to SIH, focusing on decision making and treatment strategies. METHODS We retrospectively reviewed bilateral SDH secondary to SIH between March 2010 and September 2021. Baseline characteristics of patients, diagnosis, radiologic findings, treatments, and clinical outcome were investigated. RESULTS Fifteen patients (7 men, 8 women) with bilateral SDH secondary to SIH were included in this study. Initially, patients were treated conservatively (4 patients, 26.7 %), with an epidural blood patch (EBP, 3 patients, 20.0 %), and SDH drainage followed by the Trendelenburg position (8 patients, 53.3 %). All 3 patients that were initially treated with EBP required SDH drainage. Of the 8 patients initially treated with SDH drainage via burr hole followed by Trendelenburg position, 7 patients showed sustained improvements without EBP; however, 1 patient needed EBP. Deterioration to coma occurred in 6 out of 15 patients (40.0 %). All 6 deteriorated patients immediately recovered after SDH drainage with Trendelenburg position; 5 achieved sustained improvement without EBP and 1 required EBP. During the follow-up period, 14 out of 15 patients (93.3 %) showed good recovery. CONCLUSIONS Evacuation of SDH is not always necessary in SIH; however, we did not hesitate to perform hematoma drainage, in deteriorated patients or those with thick hematoma that is associated with significant sagging and cistern effacement. This can prevent irreversible neurologic complications. Moreover, the Trendelenburg position may help to achieve sustained improvement without additional treatment.
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Affiliation(s)
- You-Sub Kim
- Department of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Republic of Korea
| | - Sung-Pil Joo
- Department of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Republic of Korea.
| | - Kang-Hee Ahn
- Department of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Republic of Korea
| | - Tae-Sun Kim
- Department of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Republic of Korea
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Dillon WP. Spinal Cerebrospinal Fluid Leak Localization with Dynamic Computed Tomography Myelography: Tips, Tricks, and Pitfalls. Radiol Clin North Am 2024; 62:311-319. [PMID: 38272623 DOI: 10.1016/j.rcl.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Locating spinal cerebrospinal fluid (CSF) leaks can be a diagnostic dilemma for clinicians and radiologists, as well as frustrating for patients. Dynamic computed tomography myelography (dCTM) has emerged as a valuable tool in localizing spinal CSF leaks, aiding in accurate diagnosis, and guiding appropriate management. This article aims to provide insights into the technique, tips, tricks, and potential pitfalls associated with dCTM for spinal CSF leak localization. By understanding the nuances of this procedure, clinicians can optimize the diagnostic process and improve patient outcomes.
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Affiliation(s)
- William P Dillon
- Department of Radiology and Biomedical Imaging, University of California, 505 Parnassus Avenue, Room M396A Box 0628, San Francisco, CA 94143-0628, USA.
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14
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Houk JL, Kranz PG, Amrhein TJ. Percutaneous Treatment and Post-treatment Management of CSF Leaks and CSF-Venous Fistulas in Spontaneous Intracranial Hypotension. Radiol Clin North Am 2024; 62:333-343. [PMID: 38272625 DOI: 10.1016/j.rcl.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Spontaneous intracranial hypotension (SIH) is a treatable cause of orthostatic headaches secondary to pathologic loss of cerebrospinal fluid (CSF) from the subarachnoid space. SIH has several known pathologic causes including dural tears from disc osteophytes, leaks emanating from nerve root sleeve diverticula, and CSF-venous fistulas (CVFs). Depending on the type of leak, surgical repair or endovascular techniques may be options for definite treatment. However, epidural blood patching (EBP) remains first-line therapy for many patients due to its long track record, broad availability, and relatively lower risk profile. This review focuses on indications and techniques for the percutaneous treatment of SIH and provides an overview of post-procedural management of these patients.
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Affiliation(s)
- Jessica L Houk
- Department of Radiology, Duke University Medical Center, 2301 Erwin Road, Box 3808, Durham, NC 27710, USA.
| | - Peter G Kranz
- Department of Radiology, Duke University Medical Center, 2301 Erwin Road, Box 3808, Durham, NC 27710, USA
| | - Timothy J Amrhein
- Department of Radiology, Duke University Medical Center, 2301 Erwin Road, Box 3808, Durham, NC 27710, USA
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15
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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16
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Orscelik A, Cutsforth-Gregory JK, Madhavan A, Senol YC, Kobeissi H, Belge Bilgin G, Bilgin C, Kallmes DF, Brinjikji W. Endovascular Embolization Techniques for Cerebrospinal Fluid-Venous Fistula in the Treatment of Spontaneous Intracranial Hypotension. Radiol Clin North Am 2024; 62:345-354. [PMID: 38272626 DOI: 10.1016/j.rcl.2023.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Cerebrospinal fluid-venous fistula (CVF) is an important cause of spontaneous intracranial hypotension (SIH), a condition characterized by low cerebrospinal fluid (CSF) volume and orthostatic headaches. The pathogenesis of CVF is thought to be direct connection of the spinal dura to one or more veins in the epidural space, allowing unregulated flow of CSF into the venous system. Herein, we provide a comprehensive review of the endovascular management of CVF in patients with SIH. We also focus on the various techniques and devices used in endovascular treatment, as well as the pathogenesis, diagnosis, and alternative treatment options of CVF.
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Affiliation(s)
| | | | - Ajay Madhavan
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Yigit Can Senol
- Department of Radiology, Mayo Clinic, Rochester, MN, USA; Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA
| | | | | | - Cem Bilgin
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | | | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, Rochester, MN, USA; Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA
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17
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Carroll I, Callen AL. Beyond myths: Transformative insights into spinal cerebrospinal fluid leaks and their role in persistent headache syndromes. Headache 2024; 64:229-232. [PMID: 38385703 DOI: 10.1111/head.14677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/23/2024]
Affiliation(s)
- Ian Carroll
- Department of Anesthesiology, Stanford Headache Clinic, Stanford University, Palo Alto, California, USA
| | - Andrew L Callen
- Department of Radiology, Neuroradiology Section, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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18
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Boczarska-Jedynak M, Stompel D. Headache associated with intracranial hypotension: diagnostic challenges and difficulties in everyday neurological practice. Neurol Neurochir Pol 2024; 58:21-30. [PMID: 38393961 DOI: 10.5603/pjnns.97407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/26/2023] [Accepted: 02/13/2024] [Indexed: 02/25/2024]
Abstract
Low pressure of cerebrospinal fluid (CSF) is a rare cause of headache, except when the patient undergoes a lumbar puncture. Headache associated with a low CSF pressure i.e. intracranial hypotension causes diagnostic difficulties. Headaches related to spontaneous intracranial hypotension (SIH) pose a significant diagnostic challenge in everyday neurological practice. Patients with headaches due to SIH are usually diagnosed only after a long delay. Diagnostic problems may result in unnecessary invasive diagnostic procedures, or even neurosurgical operations. Diagnosing headaches attributed to SIH requires the consideration of several clinical scenarios, and the disease's features causing primary or secondary disturbances. In this review, we discuss the differential diagnosis of SIH-related headaches with reference to accumulated knowledge, including meta-analyses, guidelines, casuistry, and the applicable criteria of the International Classification of Headache Disorders. In addition, we discuss head and spine magnetic resonance imaging abnormalities, which may indicate intracranial hypotension.
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Affiliation(s)
| | - Daniel Stompel
- Health Institute Dr. Boczarska-Jedynak, Oswiecim, Poland
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19
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Liao L, Tonnelet R, Schmitt E, Planel S, Zhu F, Muszynski P, Harsan O, Anxionnat R, Bracard S, Braun M. CT-guided percutaneous cyanoacrylate injection targeting the spinal cerebrospinal fluid leak: a potential therapeutic option for spontaneous intracranial hypotension. J Neurointerv Surg 2024; 16:261-265. [PMID: 36927657 DOI: 10.1136/jnis-2022-020004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/06/2023] [Indexed: 03/18/2023]
Abstract
BACKGROUND We report the first case series of spontaneous intracranial hypotension (SIH) patients who underwent CT-guided percutaneous cyanoacrylate injection targeting the cerebrospinal fluid (CSF) leak. METHODS A retrospective analysis was performed for all consecutive cases of SIH patients with CSF leak confirmed on CT myelography, treated by CT-guided percutaneous cyanoacrylate injection at our institution from 2016 to 2022. On pretreatment brain and spine MRIs, we analyzed signs of SIH according to the Bern score, and dichotomized cases into positive/negative for spinal longitudinal extradural CSF collection (SLEC-P or SLEC-N). The leaks detected on CT myelography were classified into three types according to Schievink et al. We collected the Headache Impact Test 6 (HIT-6) scores throughout a 6-month follow-up, with a brain CT scan at each visit. RESULTS 11 patients were included (mean age 48.4 years, six men). Five SLEC-P type 1, three SLEC-P type 2, and three SLEC-N type 3 leaks were identified. All patients had significant signs of SIH on pretreatment brain MRI (mean Bern score 7.8±1.1). Six patients underwent a foraminal puncture, and five patients had a cervical epidural approach. Two patients experienced mild and transient locoregional pain after cervical epidural injection. Mean HIT-6 score at baseline was 66.8±3.2 and at the 6-month follow-up was 38±3.6 (P<0.001). All patients achieved improvement in their symptoms, with 82% of them (9/11) having complete resolution of headaches and SIH findings on CT scans at 6 months. No clinical worsening or recurrence was observed. CONCLUSIONS CT-guided percutaneous cyanoacrylate injection may be a potential therapeutic option for the different types of CSF leak causing SIH.
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Affiliation(s)
- Liang Liao
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- LORIA, Vandoeuvre-les-Nancy, Grand Est, France
| | - Romain Tonnelet
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- University of Lorraine, Nancy, Grand Est, France
| | - Emmanuelle Schmitt
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
| | - Sophie Planel
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
| | - François Zhu
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- University of Lorraine, Nancy, Grand Est, France
| | - Patricio Muszynski
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- Instituto Oulton, Cordoba, Argentina
| | - Oana Harsan
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- University of Lorraine, Nancy, Grand Est, France
| | - René Anxionnat
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- University of Lorraine, Nancy, Grand Est, France
| | - Serge Bracard
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- University of Lorraine, Nancy, Grand Est, France
| | - Marc Braun
- Department of Diagnostic and Interventional Neuroradiology, CHRU de Nancy, Nancy, Lorraine, France
- University of Lorraine, Nancy, Grand Est, France
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20
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Carlton Jones L, Hoffmann J, Mohideen S, Stanton B, Bleil C, Britton T, Goadsby PJ, Zebian B. Management of cervical CSF-venous fistula causing acute cognitive impairment and coma. Acta Neurochir (Wien) 2024; 166:37. [PMID: 38277029 DOI: 10.1007/s00701-024-05935-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 12/03/2023] [Indexed: 01/27/2024]
Abstract
CSF-venous fistulas (CVFs) are increasingly recognised as a cause of spontaneous intracranial hypotension. They may present atypically including with brain sagging pseudo-dementia. Cervical CVFs are rare and their management can be difficult due to associated eloquent nerve roots. We report the case of a 49-year-old woman who presented with cognitive decline progressing to coma. Brain imaging showed features of spontaneous intracranial hypotension and a right C7 CVF was identified at digital subtraction and CT myelography. Initial treatment with CT-guided injection of fibrin sealant produced temporary improvement in symptoms before surgical treatment resulted in total clinical remission and radiological resolution.
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Affiliation(s)
- Lalani Carlton Jones
- Department of Neuroradiology, King's College Hospital, Denmark Hill, London, SE5 9RS, UK.
- Department of Radiology, Guy's and St Thomas' Hospitals NHS Foundation Trust, St Thomas' Hospital, Westminster Bridge Rd, London, SE1 7EH, UK.
| | - Jan Hoffmann
- Department of Neurology, King's College Hospital, Denmark Hill, London, SE5 9RS, UK
- Wolfson Centre for Age-Related Diseases, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Saamir Mohideen
- Department of Neurology, King's College Hospital, Denmark Hill, London, SE5 9RS, UK
| | - Biba Stanton
- Department of Neurology, King's College Hospital, Denmark Hill, London, SE5 9RS, UK
| | - Cristina Bleil
- Department of Neurosurgery, King's College Hospital, Denmark Hill, London, SE5 9RS, UK
| | - Tom Britton
- Department of Neurology, King's College Hospital, Denmark Hill, London, SE5 9RS, UK
| | - Peter J Goadsby
- Department of Neurology, King's College Hospital, Denmark Hill, London, SE5 9RS, UK
- Wolfson Centre for Age-Related Diseases, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Bassel Zebian
- Department of Neurosurgery, King's College Hospital, Denmark Hill, London, SE5 9RS, UK
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21
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Orscelik A, Senol YC, Musmar B, Kobeissi H, Bilgin GB, Zandpazandi S, Bilgin C, Pakkam M, Brinjikji W. Endovascular embolization of cerebrospinal fluid-venous fistula: a comprehensive systematic review on its efficacy and safety for the management of spontaneous intracranial hypotension. Neurosurg Rev 2024; 47:28. [PMID: 38163843 DOI: 10.1007/s10143-023-02264-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/20/2023] [Accepted: 12/24/2023] [Indexed: 01/03/2024]
Abstract
Cerebrospinal fluid (CSF)-venous fistula can cause spontaneous intracranial hypotension (SIH) and poses a significant diagnostic and management challenge. This study aims to provide a comprehensive overview of the clinical and radiological outcomes of endovascular embolization as a novel treatment approach for CSF-venous fistula in patients with SIH. This systematic review adheres to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 statement. The primary outcome was the efficacy of the embolization procedure in occlusion of the CSF-venous fistula, and secondary outcomes included procedural complications and improvement of clinical symptoms and radiological findings. A total of nine studies consisting of 77 patients met the inclusion criteria. Orthostatic and/or Valsalva headache was the most common symptom. The mean age of the patients was 57 ± 8.9 years, and females accounted for 59.7% (46/77) of the cases. Sixty-five (84.4%) patients reported complete resolution or significant improvement in symptoms. The Bern score, Headache Impact Test-6, and the Patient Global Impression of Change scales demonstrated significant improvements in radiological findings and patients' quality of life. Following the procedure, 22 patients (28.6%) experienced rebound intracranial hypertension and 27 patients (35.1%) had transient local pain at the site of the embolization. Our study showed that endovascular embolization is a safe and effective treatment for CSF-venous fistula in patients with SIH, providing complete resolution or significant improvement of clinical symptoms and radiological findings, and positive impacts on patients' quality of life.
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Affiliation(s)
- Atakan Orscelik
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN, USA.
- Department of Neurosurgery, Division of Neuroendovascular Surgery, Medical University of South Carolina, Charleston, SC, USA.
| | - Yigit Can Senol
- Department of Neurosurgery, University of California, San Francisco, CA, USA
| | - Basel Musmar
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN, USA
| | - Hassan Kobeissi
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN, USA
| | - Gokce Belge Bilgin
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN, USA
| | - Sara Zandpazandi
- Department of Neurosurgery, Division of Neuroendovascular Surgery, Medical University of South Carolina, Charleston, SC, USA
| | - Cem Bilgin
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN, USA
| | - Madona Pakkam
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN, USA
| | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, 200 First St. SW, Rochester, MN, USA
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22
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Häni L, Fung C, El Rahal A, Volz F, Kraus LM, Schnell O, Ferrarese R, Erny D, Schwabenland M, Urbach H, Lützen N, Beck J. Distinct Pattern of Membrane Formation With Spinal Cerebrospinal Fluid Leaks in Spontaneous Intracranial Hypotension. Oper Neurosurg (Hagerstown) 2024; 26:71-77. [PMID: 37747369 PMCID: PMC10688773 DOI: 10.1227/ons.0000000000000914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 07/18/2023] [Indexed: 09/26/2023] Open
Abstract
BACKGROUND AND OBJECTIVES To systematically describe pertinent, intraoperative anatomic findings encountered when approaching spinal cerebrospinal fluid (CSF) leaks and CSF-venous fistulas in spontaneous intracranial hypotension (SIH). METHODS In a retrospective study, we included surgically treated patients suffering from SIH at our institution from April 2018 to March 2022. Anatomic, intraoperative data were extracted from operative notes and supplemented with data from surgical videos and images. Prominent anatomic features were compared among different types of CSF leaks. RESULTS The study cohort consists of 120 patients with a mean age of 45.2 years. We found four distinct patterns of spinal membranes specifically associated with different types of CSF leaks: (i) thick, dorsal membranes, which were hypervascular and may mimic the dura (pseudodura); (ii) thin, lateral membranes encapsulating a ventral epidural CSF compartment (confining the spinal longitudinal extradural CSF collection); (iii) ventral membranes constituting a transdural funnel-like CSF channel; and (iv) lateral membranes forming spinal cysts/meningeal diverticulae associated with lateral CSF leaks. The latter three types resemble a layer of arachnoid herniated through the dural defect. CONCLUSION We describe four distinct spinal (neo-)membranes in association with spinal CSF leaks. Formation of these membranes, or emergence by herniation of arachnoid through a dural defect, constitutes a specific pathoanatomic feature of patients with SIH and CSF leaks. Recognition of these membranes is of paramount importance for diagnosis and treatment of patients with spinal CSF leaks.
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Affiliation(s)
- Levin Häni
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Christian Fung
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Amir El Rahal
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
- Faculty of Medicine of Geneva, Geneva, Switzerland;
| | - Florian Volz
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Luisa Mona Kraus
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Oliver Schnell
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Roberto Ferrarese
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Daniel Erny
- Institute of Neuropathology, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Marius Schwabenland
- Institute of Neuropathology, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
| | - Horst Urbach
- Department of Neuroradiology, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany
| | - Niklas Lützen
- Department of Neuroradiology, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany
| | - Jürgen Beck
- Department of Neurosurgery, Medical Center—University of Freiburg, Freiburg im Breisgau, Germany;
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23
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Ge S, Wang L, Cui X, Wang XP. Spontaneous intracranial hypotension combined with venous sinus thrombosis: A case series. Asian J Surg 2024; 47:810-812. [PMID: 37891105 DOI: 10.1016/j.asjsur.2023.10.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Affiliation(s)
- Shihao Ge
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lele Wang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiaocong Cui
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Xiao-Peng Wang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
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24
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Schartz D, Ellens N, Ismail R, Houk C, Kessler A, Ellika S, Bender MT. Prevalence of SLEC-negative spontaneous intracranial hypotension in patients with spinal nerve root sleeve diverticula on MRI. Neuroradiol J 2023; 36:736-739. [PMID: 37589060 PMCID: PMC10649535 DOI: 10.1177/19714009231196467] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023] Open
Abstract
PURPOSE While there is thought to be an association between spinal nerve root diverticula (NRD) and spontaneous intracranial hypotension (SIH) without a spinal longitudinal epidural collection (SLEC), it remains unclear what the overall prevalence of SLEC-negative SIH is in patients with NRD on MRI. METHODS Spine MRI imaging reports from our single institution were electronically screened for instances of NRD over a 9-year period (2016-2023). From these cases, patients with brain MRIs consistent with SIH were also identified. Subsequently, the overall proportion of SLEC-negative SIH was determined as a function of total cases with NRD based on spinal level. RESULTS In total, 83,843 patients with spinal MRIs were screened which identified 4174 (4.97%) with NRD. From these, there were 1203 cervical, 622 thoracic, and 2979 lumbosacral spine MRIs. In total, 16 patients (0.38%; Standard Error [SE]: 0.48%-0.28%) had a brain MRI compatible with SLEC-negative SIH and met ICHD-3 criteria. Patients with cervical NRD had SIH in 2 cases (0.16%; SE: 0.27%-0.05%). SLEC-negative SIH was present in 11 patients with lumbosacral NRD (0.34%; SE: 0.44%-0.24%). In patients with diverticula in the thoracic spine, 14 (2.3%; SE: 2.8%-1.8%) had SLEC-negative SIH. SLEC-negative SIH was significantly more prevalent in patients with thoracic diverticula compared to those with cervical (p<.0001) or lumbosacral NRD (p<.0001). CONCLUSION In patients with spinal NRD, concurrent SLEC-negative SIH is present in approximately 0.38% of patients, suggesting that in the vast majority of cases, they are an incidental finding. However, SIH is present in approximately 2.3% of patients with thoracic NRD and may be more specific for leak localization.
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Affiliation(s)
- Derrek Schartz
- Department of Imaging Sciences, University of Rochester Medical Center, USA
- Department of Neurosurgery, University of Rochester Medical Center, USA
| | - Nathaniel Ellens
- Department of Neurosurgery, University of Rochester Medical Center, USA
| | - Rahim Ismail
- Department of Imaging Sciences, University of Rochester Medical Center, USA
| | - Clifton Houk
- Department of Neurosurgery, University of Rochester Medical Center, USA
| | - Alex Kessler
- Department of Imaging Sciences, University of Rochester Medical Center, USA
| | - Shehanaz Ellika
- Department of Imaging Sciences, University of Rochester Medical Center, USA
| | - Matthew T Bender
- Department of Neurosurgery, University of Rochester Medical Center, USA
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25
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Benson JC, Madhavan AA, Mark IT, Cutsforth-Gregory JK, Brinjikji W, Verdoorn JT. Likelihood of Discovering a CSF Leak Based on Intracranial MRI Findings in Patients without a Spinal Longitudinal Extradural Collection: A New Probabilistic Scoring System. AJNR Am J Neuroradiol 2023; 44:1339-1344. [PMID: 37884301 PMCID: PMC10631522 DOI: 10.3174/ajnr.a8030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 09/14/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND AND PURPOSE The likelihood of discovering a CSF leak can be determined by assessing intracranial abnormalities. However, the Dobrocky scoring system, which is used to determine this likelihood, did not incorporate patients with CSF-venous fistulas. This study sought to create a new probabilistic scoring system applicable to patients without a spinal longitudinal extradural collection. MATERIALS AND METHODS A retrospective review was completed of patients with suspected spontaneous intracranial hypotension who underwent brain MR imaging followed by digital subtraction myelography with same-day CT myelography. Patients with and without leaks found on digital subtraction myelography were included. MRIs were assessed for numerous reported stigmata of spontaneous intracranial hypotension and were compared between cohorts. RESULTS One hundred seventy-four patients were included; 113 (64.9%) were women (average age, 52.0 [SD, 14.3] years). A CSF leak was found in 98 (56.3%) patients, nearly all of which (93.9%) were CSF-venous fistulas. Diffuse dural enhancement, internal auditory canals dural enhancement, non-Chiari cerebellar descent, pituitary engorgement, brain sag, dural venous sinus engorgement, and decreased suprasellar cistern size were associated with a CSF leak. A probabilistic scoring system was made in which a single point value was assigned to each of those findings: 0-2 considered low probability and ≥3 considered intermediate-to-high probability of a CSF leak. CONCLUSIONS This study offers a new probabilistic scoring system for evaluating the likelihood of discovering a CSF leak on the basis of intracranial MR imaging findings, though the new system is not superior to that of the Dobrocky method for predicting the presence of CSF leaks.
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Affiliation(s)
- John C Benson
- From the Department of Radiology (J.C.B., A.A.M., I.T.M., W.B., J.T.V.), Mayo Clinic, Rochester, Minnesota
| | - Ajay A Madhavan
- From the Department of Radiology (J.C.B., A.A.M., I.T.M., W.B., J.T.V.), Mayo Clinic, Rochester, Minnesota
| | - Ian T Mark
- From the Department of Radiology (J.C.B., A.A.M., I.T.M., W.B., J.T.V.), Mayo Clinic, Rochester, Minnesota
| | | | - Waleed Brinjikji
- From the Department of Radiology (J.C.B., A.A.M., I.T.M., W.B., J.T.V.), Mayo Clinic, Rochester, Minnesota
| | - Jared T Verdoorn
- From the Department of Radiology (J.C.B., A.A.M., I.T.M., W.B., J.T.V.), Mayo Clinic, Rochester, Minnesota
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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28
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Hosur B, Boban S, Pulikottil VW. Intracranial Hypotension Masquerading Tubercular Relapse. Neurol India 2023; 71:1322-1323. [PMID: 38174502 DOI: 10.4103/0028-3886.391366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Affiliation(s)
- Bharat Hosur
- Department of Radiodiagnosis, Armed Forces Medical College, Pune, Maharashtra, India
| | - Smrithy Boban
- Department of Internal Medicine, Armed Forces Medical College, Pune, Maharashtra, India
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Baram A, Zaed I, Safa A, Robertis MD, Lasio G, Maira G, Cannizzaro D. Intracranial Hypotension Syndrome after Lumbar Drainage in Skull Base Surgery: Diagnosis and Correct Management. J Neurol Surg A Cent Eur Neurosurg 2023; 84:578-583. [PMID: 37263292 DOI: 10.1055/s-0042-1759825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Lumbar drainage is commonly used in skull base surgery; however, very few cases of intracranial hypotension syndrome are reported to be caused by this procedure. We present a clinical case of lumbar drainage-assisted orbital and optic canal decompression surgery for a recurrent voluminous spheno-orbital meningioma, together with a literature review. A 49-year-old woman became confused and drowsy on postoperative day 3, after initially experiencing neurologic stability. Computed tomography (CT) scan of the head showed extradural frontotemporal fluid collection with moderate right to left midline shift. Magnetic resonance imaging (MRI) of the brain showed signs of intracranial hypotension, such as brain sagging and diffuse dural contrast enhancement. Conservative treatment with bed rest, aggressive hydration, steroids, and aminophylline led to progressive neurologic improvement. A systematic literature review was also performed, and previous reported cases were analyzed. Overall, neurosurgeons must be aware of the lumbar drainage-induced hypotension syndrome in skull base surgeries, because immediate diagnosis is essential for therapeutic decision-making. In this setting, conservative management is the first-line treatment as surgery may lead to severe complications.
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Affiliation(s)
- Ali Baram
- Humanitas Clinical and Research Center, IRCCS, Rozzano, Italy
| | - Ismail Zaed
- Division of Neurosurgery, ASST Ovest Milanese, Legnano Hospital, Milan, Italy
| | - Adrian Safa
- Department of Biomedical Sciences, Humanitas University, Milan, Pieve Emanuele, Italy
| | | | - Giovanni Lasio
- Humanitas Clinical and Research Center, IRCCS, Rozzano, Italy
| | - Giulio Maira
- Humanitas Clinical and Research Center, IRCCS, Rozzano, Italy
| | - Delia Cannizzaro
- Humanitas Clinical and Research Center, IRCCS, Rozzano, Italy
- Department of Biomedical Sciences, Humanitas University, Milan, Pieve Emanuele, Italy
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Hosur B, Jain NK, Sahdev R. Somnolence Due to Spontaneous Intracranial Hypotension. Neurol India 2023; 71:1324-1325. [PMID: 38174503 DOI: 10.4103/0028-3886.391367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Affiliation(s)
- Bharat Hosur
- Department of Radiodiagnosis, Armed Forces Medical College, Pune, Maharashtra, India
| | - Narendra Kumar Jain
- Department of Radiodiagnosis, Command Hospital, Lucknow, Uttar Pradesh, India
| | - Ravinder Sahdev
- Department of Radiodiagnosis, Armed Forces Medical College, Pune, Maharashtra, India
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31
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Lützen N, Demerath T, Volz F, Beck J, Urbach H. Cone-Beam CT for the Detection of a Ventral Spinal CSF Leak in Spontaneous Intracranial Hypotension. Neurology 2023; 101:670-671. [PMID: 37500560 PMCID: PMC10585690 DOI: 10.1212/wnl.0000000000207504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/26/2023] [Indexed: 07/29/2023] Open
Affiliation(s)
- Niklas Lützen
- From the Department of Neuroradiology (N.L., T.D., H.U.), and Department of Neurosurgery (F.V., J.B.), Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Germany.
| | - Theo Demerath
- From the Department of Neuroradiology (N.L., T.D., H.U.), and Department of Neurosurgery (F.V., J.B.), Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Florian Volz
- From the Department of Neuroradiology (N.L., T.D., H.U.), and Department of Neurosurgery (F.V., J.B.), Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Jürgen Beck
- From the Department of Neuroradiology (N.L., T.D., H.U.), and Department of Neurosurgery (F.V., J.B.), Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Horst Urbach
- From the Department of Neuroradiology (N.L., T.D., H.U.), and Department of Neurosurgery (F.V., J.B.), Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
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Acevedo-Aguilar L, Gaitán-Herrera G, Lozada-Martinez I, Bosque-Varela P, Moscote-Salazar L. Letter to the editor regarding "Unilateral chronic subdural hematoma due to spontaneous intracranial hypotension: a report of four cases". Br J Neurosurg 2023; 37:1426-1427. [PMID: 33538205 DOI: 10.1080/02688697.2021.1881761] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 01/22/2021] [Indexed: 10/22/2022]
Affiliation(s)
- Laura Acevedo-Aguilar
- Medical and Surgical Research Center, School of Medicine, University of Cartagena, Cartagena, Colombia
| | - Gustavo Gaitán-Herrera
- Medical and Surgical Research Center, School of Medicine, University of Cartagena, Cartagena, Colombia
| | - Ivan Lozada-Martinez
- Medical and Surgical Research Center, School of Medicine, University of Cartagena, Cartagena, Colombia
- Colombian Clinical Research Group in Neurocritical Care, School of Medicine, University of Cartagena, Cartagena, Colombia
- Latin American Council of Neurocritical Care, Cartagena, Colombia
| | - Pilar Bosque-Varela
- Department of Neurology, Christian Doppler Klinik, Paracelsus Medical University of Salzburg, Austria
| | - Luis Moscote-Salazar
- Medical and Surgical Research Center, School of Medicine, University of Cartagena, Cartagena, Colombia
- Colombian Clinical Research Group in Neurocritical Care, School of Medicine, University of Cartagena, Cartagena, Colombia
- Latin American Council of Neurocritical Care, Cartagena, Colombia
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Mohammed H, Madipola N, Chawda S, de Silva RN. Terson's syndrome following epidural blood patch for spontaneous intracranial hypotension. Pract Neurol 2023; 23:434-435. [PMID: 37423722 DOI: 10.1136/pn-2023-003768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2023] [Indexed: 07/11/2023]
Affiliation(s)
| | - Nissanka Madipola
- Department of Obstetrics and Gynaecology, Queen's Hospital, Romford, UK
| | - Sanjiv Chawda
- Department of Neuroradiology, Queen's Hospital, Romford, UK
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34
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Quintas-Neves M. Diffuse pachymeningeal T2-FLAIR hyperintensity in spontaneous intracranial hypotension: to obviate gadolinium administration or not. Neuroradiology 2023; 65:1317-1318. [PMID: 37580446 DOI: 10.1007/s00234-023-03167-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 05/14/2023] [Indexed: 08/16/2023]
Affiliation(s)
- Miguel Quintas-Neves
- Neuroradiology Department, Hospital de Braga, Sete Fontes-São Victor, 4710-243, Braga, Portugal.
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.
- ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal.
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O'Cearbhaill RM, Nicholson PJ. Reply: Diffuse pachymeningeal T2-FLAIR hyperintensity in spontaneous intracranial hypotension: to obviate gadolinium administration or not. Neuroradiology 2023; 65:1319-1320. [PMID: 37580447 DOI: 10.1007/s00234-023-03188-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 06/16/2023] [Indexed: 08/16/2023]
Affiliation(s)
- Roisin M O'Cearbhaill
- Division of Neuroradiology, Department of Medical Imaging, University of Toronto, University Health Network, Toronto Western Hospital, New East Wing 3MC-430, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada.
| | - Patrick J Nicholson
- Division of Neuroradiology, Department of Medical Imaging, University of Toronto, University Health Network, Toronto Western Hospital, New East Wing 3MC-430, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada
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36
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Houk JL, Morrison S, Peskoe S, Amrhein TJ, Kranz PG. Validity of the Bern Score as a Surrogate Marker of Clinical Severity in Patients with Spontaneous Intracranial Hypotension. AJNR Am J Neuroradiol 2023; 44:1096-1100. [PMID: 37562827 PMCID: PMC10494944 DOI: 10.3174/ajnr.a7962] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/06/2023] [Indexed: 08/12/2023]
Abstract
BACKGROUND AND PURPOSE The Bern score is a quantitative scale characterizing brain MR imaging changes in spontaneous intracranial hypotension. Higher scores are associated with more abnormalities on brain MR imaging, raising the question of whether the score can serve as a measure of disease severity. However, the relationship between clinical symptom severity and the Bern score has not been evaluated. Our purpose was to assess correlations between Bern scores and clinical headache severity in spontaneous intracranial hypotension. MATERIALS AND METHODS This study was a single-center, retrospective cohort of patients satisfying the International Classification of Headache Disorders-3 criteria for spontaneous intracranial hypotension. Fifty-seven patients who completed a pretreatment headache severity questionnaire (Headache Impact Test-6) and had pretreatment brain MR imaging evidence of spontaneous intracranial hypotension were included. Pearson correlation coefficients (ρ) for the Headache Impact Test-6 and Bern scores were calculated. Receiver operating characteristic curves were used to assess the ability of Bern scores to discriminate among categories of headache severity. RESULTS We found low correlations between clinical headache severity and Bern scores (ρ = 0.139; 95% CI, -0.127-0.385). Subgroup analyses examining the timing of brain MR imaging, symptom duration, and prior epidural blood patch showed negligible-to-weak correlations in all subgroups. Receiver operating characteristic analysis found that the Bern score poorly discriminated subjects with greater headache severity from those with lower severity. CONCLUSIONS Pretreatment Bern scores show a low correlation with headache severity in patients with spontaneous intracranial hypotension. This finding suggests that brain imaging findings as reflected by Bern scores may not reliably reflect clinical severity and should not replace clinical metrics for outcome assessment.
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Affiliation(s)
- J L Houk
- From the Department of Radiology (J.L.H., T.J.A., P.G.K.), Duke University Medical Center, Durham, North Carolina
| | - S Morrison
- Department of Biostatistics and Bioinformatics (S.M., S.P.), Duke University School of Medicine, Durham, North Carolina
| | - S Peskoe
- Department of Biostatistics and Bioinformatics (S.M., S.P.), Duke University School of Medicine, Durham, North Carolina
| | - T J Amrhein
- From the Department of Radiology (J.L.H., T.J.A., P.G.K.), Duke University Medical Center, Durham, North Carolina
| | - P G Kranz
- From the Department of Radiology (J.L.H., T.J.A., P.G.K.), Duke University Medical Center, Durham, North Carolina
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37
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Lützen N, Barvulsky Aleman E, Fung C, Beck J, Urbach H. Prone Dynamic CT Myelography in Spontaneous Intracranial Hypotension : Diagnostic Need and Radiation Doses. Clin Neuroradiol 2023; 33:739-745. [PMID: 36867243 PMCID: PMC10449968 DOI: 10.1007/s00062-023-01269-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 01/25/2023] [Indexed: 03/04/2023]
Abstract
BACKGROUND AND PURPOSE The diagnostic work-up in patients with spontaneous intracranial hypotension (SIH) and spinal longitudinal extradural CSF collection (SLEC) on magnetic resonance imaging (MRI) comprises dynamic digital subtraction myelography (dDSM) in prone position for leak detection. Dynamic computed tomography (CT) myelography (dCT-M) in prone position follows if the leak is not unequivocally located. A drawback of dCT‑M is a high radiation dose. This study evaluates the diagnostic needs of dCT-M examinations and measures to reduce radiation doses. METHODS Frequency, leak sites, length and number of spiral acquisitions, DLP and effective doses of dCT‑M were retrospectively recorded in patients with ventral dural tears. RESULTS Of 42 patients with ventral dural tears, 8 underwent 11 dCT‑M when the leak was not unequivocally shown on digital subtraction myelography. The median number of spiral acquisitions was 4 (range 3-7) and the mean effective radiation dose 30.6 mSv (range 13.1-62.16 mSv) mSv. Five of eight leaks were located in the upper thoracic spine (range C7/Th1-Th2/3). Bolus tracking of intrathecal contrast agent in dCT‑M was used to limit the number and length of spiral acquisitions. DISCUSSION A dCT‑M in prone position to localize a ventral dural tear is needed in every fifth patient with a SLEC on MRI. It is typically needed when the leak is located in the upper thoracic spine and when patients have broad shoulders. Measures to reduce the radiation dose include bolus tracking or to repeat the DSM with adjusted positioning of patient.
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Affiliation(s)
- Niklas Lützen
- Dept. of Neuroradiology, Faculty of Medicine, University Medical Center Freiburg, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany.
| | - Enrique Barvulsky Aleman
- Dept. of Neuroradiology, Faculty of Medicine, University Medical Center Freiburg, 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, Freiburg, Germany
| | - Juergen Beck
- Dept. of Neurosurgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Horst Urbach
- Dept. of Neuroradiology, Faculty of Medicine, University Medical Center Freiburg, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
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38
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Kranz PG, Malinzak MD, Gray L, Willhite J, Amrhein TJ. Resisted Inspiration Improves Visualization of CSF-Venous Fistulas in Spontaneous Intracranial Hypotension. AJNR Am J Neuroradiol 2023; 44:994-998. [PMID: 37414450 PMCID: PMC10411851 DOI: 10.3174/ajnr.a7927] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/07/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND AND PURPOSE CSF-venous fistulas are an important cause of spontaneous intracranial hypotension but are challenging to detect. A newly described technique known as resisted inspiration has been found to augment the CSF-venous pressure gradient and was hypothesized to be of potential use in CSF-venous fistula detection but has not yet been investigated in patients with spontaneous intracranial hypotension. The purpose of this investigation was to determine whether resisted inspiration results in improved visibility of CSF-venous fistulas on CT myelography in patients with spontaneous intracranial hypotension. MATERIALS AND METHODS A retrospective cohort of patients underwent CT myelography from November 2022 to January 2023. Patients with an observed or suspected CSF-venous fistula identified during CT myelography using standard maximum suspended inspiration were immediately rescanned using resisted inspiration and the Valsalva maneuver. The visibility of the CSF-venous fistula among these 3 respiratory phases was compared, and changes in venous drainage patterns between phases were assessed. RESULTS Eight patients with confirmed CSF-venous fistulas who underwent CT myelography using the 3-phase respiratory protocol were included. Visibility of the CSF-venous fistula was greatest during resisted inspiration in 5/8 (63%) of cases. Visibility was optimal with the Valsalva maneuver and maximum suspended inspiration in 1 case each, and it was equivalent in all respiratory phases in 1 case. In 2/8 (25%) cases, the pattern of venous drainage shifted between respiratory phases. CONCLUSIONS In patients with spontaneous intracranial hypotension, resisted inspiration improved visualization of CSF-venous fistulas in most, but not all, cases. Further investigation is needed to determine the impact of this technique on the overall diagnostic yield of myelography in this condition.
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Affiliation(s)
- P G Kranz
- From the Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | - M D Malinzak
- From the Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | - L Gray
- From the Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | - J Willhite
- From the Department of Radiology, Duke University Medical Center, Durham, North Carolina
| | - T J Amrhein
- From the Department of Radiology, Duke University Medical Center, Durham, North Carolina
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Turner RA, Zander D, Thaker AA, Timpone VM, Callen AL. Structured Reporting for Findings of Spontaneous Intracranial Hypotension on Brain MRI. AJR Am J Roentgenol 2023; 221:282-283. [PMID: 36919883 DOI: 10.2214/ajr.23.29144] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- Ryan A Turner
- University of Colorado Anschutz Medical Campus, Aurora, CO
| | - David Zander
- University of Colorado Anschutz Medical Campus, Aurora, CO
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Schievink WI, Maya MM, Chu RM, Perry TG, Moser FG, Taché RB, Wadhwa VS, Prasad RS. Postoperative Spinal Cerebrospinal Fluid-Venous Fistulas Associated With Dural Tears in Patients With Intracranial Hypotension or Superficial Siderosis-A Digital Subtraction Myelography Study. Neurosurgery 2023; 93:473-479. [PMID: 36856442 DOI: 10.1227/neu.0000000000002444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/10/2023] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND Postoperative spinal cerebrospinal fluid (CSF) leaks are common but rarely cause extensive CSF collections that require specialized imaging to detect the site of the dural breach. OBJECTIVE To investigate the use of digital subtraction myelography (DSM) for patients with extensive extradural CSF collections after spine surgery. METHODS A retrospective review was performed to identify a consecutive group of patients with extensive postoperative spinal CSF leaks who underwent DSM. RESULTS Twenty-one patients (9 men and 12 women) were identified. The mean age was 46.7 years (range, 17-75 years). The mean duration of the postoperative CSF leak was 3.3 years (range, 3 months to 21 years). MRI showed superficial siderosis in 6 patients. DSM showed the exact location of the CSF leak in 19 (90%) of the 21 patients. These 19 patients all underwent surgery to repair the CSF leak, and the location of the CSF leak could be confirmed intraoperatively in all 19 patients. In 4 (19%) of the 21 patients, DSM also showed a CSF-venous fistula at the same location as the postoperative dural tear. CONCLUSION In this study, DSM had a 90% detection rate of visualizing the exact site of the dural breach in patients with extensive postoperative spinal CSF leaks. The coexistence of a CSF-venous fistula in addition to the primary dural tear was present in about one-fifth of patients. The presence of a CSF-venous fistula should be considered if CSF leak symptoms persist in spite of successful repair of a durotomy.
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Affiliation(s)
- Wouter I Schievink
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Marcel M Maya
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Ray M Chu
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Tiffany G Perry
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Franklin G Moser
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Rachelle B Taché
- Department of Neurosurgery, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Vikram S Wadhwa
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Ravi S Prasad
- Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, California, USA
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O'Cearbhaill RM, Haughey AM, Willinsky RA, Farb RI, Nicholson PJ. The presence of pachymeningeal hyperintensity on non-contrast flair imaging in patients with spontaneous intracranial hypotension. Neuroradiology 2023; 65:893-898. [PMID: 36781427 DOI: 10.1007/s00234-023-03128-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 02/01/2023] [Indexed: 02/15/2023]
Abstract
PURPOSE Traditionally, in the work-up of patients for spontaneous intracranial hypotension, T1 post-contrast imaging is performed in order to assess for pachymeningeal enhancement. The aim of this study is to assess whether pachymeningeal hyperintensity can be identified on a non-contrast FLAIR sequence in these patients as a surrogate sign for pachymeningeal enhancement. METHODS The patient cohort was identified from a prospectively maintained database of patients with a clinical diagnosis of intracranial hypotension. Patients who had both a post-contrast T1 sequence brain as well as non-contrast FLAR sequence of the brain were reviewed. Imaging was retrospectively reviewed by three independent neuroradiologists. Each study was assessed for the presence or absence of pachymeningeal hyperintensity on the FLAIR sequence. RESULTS From January 2010 to July 2022, 177 patients were diagnosed with spontaneous intracranial hypotension. In total, 121 were excluded as post-contrast imaging was not performed during their work-up. Twenty-four were excluded as the FLAIR sequence was performed after administration of contrast. Six were excluded as there was no pachymeningeal thickening present on T1 post-contrast imaging, although there were other signs of intracranial hypotension. The study group therefore consisted of 26 patients. Pachymeningeal thickening was correctly identified on the non-contrast FLAIR sequence in all patients (100%). CONCLUSION Where present, diffuse pachymeningeal hyperintensity can be accurately identified on a non-contrast FLAIR sequence in patients with spontaneous intracranial hypotension. This potentially obviates the need for gadolinium base contrast agents in the work-up of these patients.
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Affiliation(s)
- Roisin M O'Cearbhaill
- Department of Medical Imaging, Division of Neuroradiology, University of Toronto, University Health Network, Toronto Western Hospital, New East Wing 3MC-430, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada.
| | - Aoife M Haughey
- Department of Medical Imaging, Division of Neuroradiology, University of Toronto, University Health Network, Toronto Western Hospital, New East Wing 3MC-430, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada
| | - Robert A Willinsky
- Department of Medical Imaging, Division of Neuroradiology, University of Toronto, University Health Network, Toronto Western Hospital, New East Wing 3MC-430, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada
| | - Richard I Farb
- Department of Medical Imaging, Division of Neuroradiology, University of Toronto, University Health Network, Toronto Western Hospital, New East Wing 3MC-430, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada
| | - Patrick J Nicholson
- Department of Medical Imaging, Division of Neuroradiology, University of Toronto, University Health Network, Toronto Western Hospital, New East Wing 3MC-430, 399 Bathurst St, Toronto, ON, M5T 2S8, Canada
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Lützen N, Fung C, Beck J, Urbach H. Multiple Bilateral CSF-venous Fistulas in Spontaneous Intracranial Hypotension : A Therapeutic Challenge. Clin Neuroradiol 2023; 33:251-254. [PMID: 36459174 PMCID: PMC10014682 DOI: 10.1007/s00062-022-01234-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 10/19/2022] [Indexed: 12/05/2022]
Affiliation(s)
- Niklas Lützen
- Dept. of Neuroradiology, Medical Center, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany.
| | - Christian Fung
- Dept. of Neurosurgery, Medical Center, University of Freiburg, Freiburg, Germany
| | - Jürgen Beck
- Dept. of Neurosurgery, Medical Center, University of Freiburg, Freiburg, Germany
| | - Horst Urbach
- Dept. of Neuroradiology, Medical Center, University of Freiburg, Breisacher Str. 64, 79106, Freiburg, Germany
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43
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Evangelou P, Omrane MA, Thurow J, Mix M, Fung C, Lützen N, Blazhenets G, Urbach H, Beck J, Meyer PT. 68Ga-DOTA PET for Diagnosis of Spinal Cerebrospinal Fluid Leaks. J Nucl Med 2023; 64:430-436. [PMID: 35981896 DOI: 10.2967/jnumed.122.264059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 08/13/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
Spontaneous intracranial hypotension due to spinal cerebrospinal fluid (CSF) leakage causes substantial disease burden. In many patients, the course is protracted and refractory to conservative treatment, requiring targeted therapy. We propose PET of the CSF space with 68Ga-DOTA as a state-of-the-art approach to radionuclide cisternography (RC) and validate its diagnostic value. Methods: This study is a retrospective analysis of patients with suspected intracranial hypotension due to spinal CSF leaks and who underwent whole-body PET/CT at 1, 3, and 5 h after intrathecal lumbar injection of 68Ga-DOTA. Two independent raters unaware of the clinical data analyzed all scans for direct and indirect RC signs of CSF leakage. Volume-of-interest analysis was performed to assess the biologic half-life of the tracer in the CSF space and the ratio of decay-corrected activity in the CSF space at 5 and 3 h (simplified marker of tracer clearance). Comprehensive stepwise neuroradiologic work-up served as a reference; additional validation was provided by surgical findings and follow-up. Results: Of 40 consecutive patients, 39 patients with a working diagnosis of intracranial hypotension due to a spinal CSF leak (spontaneous, n = 31; postintervention, n = 8) could be analyzed. A spinal CSF leak was verified by the neuroradiologic reference method in 18 of 39 patients. As the only direct and indirect diagnostic signs, extrathecal tracer accumulation at the cervicothoracic junction (67% sensitivity and 90% specificity) and lack of activity over the cerebral convexities (5 h; 94% sensitivity and 67% specificity) revealed a high diagnostic value for spinal CSF leaks. Their combination provided little improvement (71% sensitivity and 95% specificity). Additional quantitative analyses yielded no benefit (94% sensitivity and 53% specificity for biological half-life; 94% sensitivity and 58% specificity for the ratio of total radioactivity within the CSF space at 5 and 3 h). The location of direct signs (extrathecal tracer accumulation) did not correlate with verified sites of spinal CSF leakage. Conclusion: We propose CSF PET with 68Ga-DOTA as a novel, fast, and convenient approach to RC for verification but not localization of spinal CSF leaks with high sensitivity and specificity. CSF PET may fulfill an important gatekeeper function for stratifying patients toward escalation (ruling in) or deescalation (ruling out) of diagnostic and therapeutic measures. Further prospective studies are needed to validate the present results and determine the potential of the methods to reduce the burden to patients.
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Affiliation(s)
- Petros Evangelou
- Department of Neurosurgery, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Mohamed Aymen Omrane
- Department of Nuclear Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; and
| | - Johannes Thurow
- Department of Nuclear Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; and
| | - Michael Mix
- Department of Nuclear Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; and
| | - Christian Fung
- Department of Neurosurgery, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Niklas Lützen
- Department of Neuroradiology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ganna Blazhenets
- Department of Nuclear Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; and
| | - Horst Urbach
- Department of Neuroradiology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jürgen Beck
- Department of Neurosurgery, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Philipp T Meyer
- Department of Nuclear Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; and
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Beck J, Hubbe U, Klingler JH, Roelz R, Kraus LM, Volz F, Lützen N, Urbach H, Kieselbach K, Fung C. Minimally invasive surgery for spinal cerebrospinal fluid leaks in spontaneous intracranial hypotension. J Neurosurg Spine 2023; 38:147-152. [PMID: 36087332 DOI: 10.3171/2022.7.spine2252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 07/18/2022] [Indexed: 01/04/2023]
Abstract
OBJECTIVE Spinal CSF leaks cause spontaneous intracranial hypotension (SIH). Surgical closure of spinal CSF leaks is the treatment of choice for persisting leaks. Surgical approaches vary, and there are no studies in which minimally invasive techniques were used. In this study, the authors aimed to detail the safety and feasibility of minimally invasive microsurgical sealing of spinal CSF leaks using nonexpandable tubular retractors. METHODS Consecutive patients with SIH and a confirmed spinal CSF leak treated at a single institution between April 2019 and December 2020 were included in the study. Surgery was performed via a dorsal 2.5-cm skin incision using nonexpandable tubular retractors and a tailored interlaminar fenestration and, if needed, a transdural approach. The primary outcome was successful sealing of the dura, and the secondary outcome was the occurrence of complications. RESULTS Fifty-eight patients, 65.5% of whom were female (median age 46 years [IQR 36-55 years]), with 38 ventral leaks, 17 lateral leaks, and 2 CSF venous fistulas were included. In 56 (96.6%) patients, the leak could be closed, and in 2 (3.4%) patients the leak was missed because of misinterpretation of the imaging studies. One of these patients underwent successful reoperation, and the other patient decided to undergo surgery at another institution. Two other patients had to undergo reoperation because of insufficient closure and a persisting leak. The rate of permanent neurological deficit was 1.7%, the revision rate for a persisting or recurring leak was 3.4%, and the overall revision rate was 10.3%. The rate of successful sealing during the primary closure attempt was 96.6% and 3.4% patients needed a secondary attempt. Clinical short-term outcome at discharge was unchanged in 14 patients and improved in 25 patients, and 19 patients had signs of rebound intracranial hypertension. CONCLUSIONS Minimally invasive surgery with tubular retractors and a tailored interlaminar fenestration and, if needed, a transdural approach is safe and effective for the treatment of spinal CSF leaks. The authors suggest performing a minimally invasive closure of spinal CSF leaks in specialized centers.
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Affiliation(s)
| | | | | | | | | | | | - Niklas Lützen
- 2Neuroradiology, Medical Center, University of Freiburg, Freiburg; and
| | - Horst Urbach
- 2Neuroradiology, Medical Center, University of Freiburg, Freiburg; and
| | - Kristin Kieselbach
- 3Interdisciplinary Pain Center, Medical Center, University of Freiburg, Freiburg, Germany
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Lasunin NV, Cherekaev VA, Usachev DY, Abdullaev AN, Okishev DN, Pronin IN, Konovalov AN. [Complicated course of the postoperative period with the development of epidural hygroma and intracranial hypotension after removal of cranio-orbital meningioma. Clinical case and literature review]. Zh Vopr Neirokhir Im N N Burdenko 2023; 87:94-103. [PMID: 37830474 DOI: 10.17116/neiro20238705194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Surgical removal of cranio-orbital meningiomas is an effective method of treating this pathology. Modern surgical techniques and technologies make it possible to perform operations with a low risk of complications. Lumbar drainage or repeated lumbar punctures are often used intraoperatively or in the early postoperative period to prevent nasal CSF leak; this rarely leads to the development of significant neurological symptoms. We present a case of the development of severe intracranial hypotension with the formation of a subdural hygroma in the early postoperative period after removal of a cranio-orbital meningioma in a 41-year-old patient. The operation was performed using an individual model and molds for simultaneous reconstruction of the bone defect with an implant made of polymethyl methacrylate. On the 1st and 2nd days after surgery, lumbar punctures were performed. From the 2nd day there was a progressive deterioration with the development of symptoms characteristic of intracranial hypotension. Computed tomography revealed an increasing displacement of the midline structures of the brain and an increasing volume of epidural fluid accumulation in the area of surgical intervention. Magnetic resonance imaging revealed characteristic signs of intracranial hypotension. Conservative treatment (bed rest, active hydration) had no effect. On the 6th day after surgery, an epidural blood patch procedure was performed and closed external drainage of the epidural hygroma was performed, and a rapid regression of neurological symptoms was noted. Our experience and literature data indicate that it is necessary to remember the possibility of developing clinically significant intracranial hypotension even after a single lumbar puncture. The formation of hygromas in the surgical area is characteristic of intracranial hypotension, but in most cases does not require additional surgical intervention and does not have a negative impact on the outcome of treatment. Conservative treatment of intracranial hypotension is the first choice and often sufficient. If there is no effect and the patient's condition worsens, it is necessary to perform an epidural blood patch procedure.
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Affiliation(s)
- N V Lasunin
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | | | | | - D N Okishev
- Burdenko Neurosurgical Center, Moscow, Russia
| | - I N Pronin
- Burdenko Neurosurgical Center, Moscow, Russia
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Signorelli F, Visocchi M. Spontaneous Intracranial Hypotension: Controversies in Treatment. Acta Neurochir Suppl 2023; 135:209-211. [PMID: 38153471 DOI: 10.1007/978-3-031-36084-8_32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Spontaneous intracranial hypotension (SIH) is a disorder of low cerebrospinal fluid (CSF) volume secondary to CSF leakage through a dural defect along the neuraxis with an estimated incidence of 5 people per 100,000.Great debate persists on the optimal treatment of this pathology, and clinical results are often contradictory. SIH may be initially approached via conservative measures, such as bed rest that is often supplemented with hydration, caffeine, and theophylline, which overall relieve symptoms in a small subset of patients at 6 months. Epidural blood patching (EBP) is generally the next consideration in symptom management. It is the most commonly performed intervention for spinal CSF leaks, as the first option or following the failure of conservative treatment. Further procedures may be performed in the case of EBP partial or temporary response and if the spinal CSF leak has been definitively localized (Beck et al., Neurology 87:1220-26, 2016). In those cases, if the CSF leak is well localized, the surgical closure of the spinal CSF leak may be considered.SIH is a complex but treatable CSF disorder. Despite recent advances in the field of neuroimaging and the different therapeutic options available, the appropriate management remains controversial and should be tailored to the patient.
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Affiliation(s)
- Francesco Signorelli
- Institute of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University, Rome, Italy
- Institute of Neurosurgery, Catholic University of Rome, Rome, Italy
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Konovalov AN, Grebenev FV, Asyutin DS, Zakirov BA, Konovalov NA, Pronin IN, Eliava SS. [Spontaneous dural CSF fistula as a cause of intracranial hypotension syndrome. Case report and literature review]. Zh Vopr Neirokhir Im N N Burdenko 2023; 87:63-70. [PMID: 37011330 DOI: 10.17116/neiro20238702163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
Typical symptoms of spontaneous intracranial hypotension syndrome are severe headache, weakness, dizziness and inability to stay upright for a long time. Most often, this syndrome occurs due to CSF fistula in spinal space. Pathophysiology and diagnosis of this disease are poorly known for neurologists and neurosurgeons that can complicate timely surgical care. In case of correct diagnosis, we can identify the exact location of CSF fistula in 90% of cases. Treatment eliminates symptoms of intracranial hypotension and provides functional recovery. The purpose of this article is to describe the diagnostic algorithm and successful microsurgical treatment of a patient with spinal dural CSF fistula Th3-Th4 through posterolateral transdural approach.
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Affiliation(s)
| | | | - D S Asyutin
- Burdenko Neurosurgical Center, Moscow, Russia
| | - B A Zakirov
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - I N Pronin
- Burdenko Neurosurgical Center, Moscow, Russia
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M O, JK CG, I G, NR K, CM C, W B. Prevalence of cerebral vein thrombosis among patients with spontaneous intracranial hypotension. Interv Neuroradiol 2022; 28:719-725. [PMID: 34904470 PMCID: PMC9706257 DOI: 10.1177/15910199211065912] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 11/17/2021] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND AND PURPOSE Cerebral venous sinus thrombosis (CVST) is a rare condition but an important complication of spontaneous intracranial hypotension (SIH). We reviewed our experience of patients with SIH and assessed for the presence of CVST. METHODS We reviewed the medical records and imaging studies from our tertiary referral institution, assessing patients with clinically suspected SIH as well as imaging findings of intracranial hypotension. All relevant brain MRIs were reviewed for the presence of brain sag, pachymeningeal enhancement, and CVST. RESULTS Among 563 patients with a clinical diagnosis of SIH, 431 (76%) demonstrated brain sag. In the overall patient cohort, a total of 5 patients had CVST (0.9%) and all 5 of these patients demonstrated findings of brain sag. Of the patients with CVST, 3 had significant complications, including dural arteriovenous fistulas (2 patients) and lobar hemorrhage with seizure (1 patient). CONCLUSION SIH is a risk factor for the development of CVST. In our review of 563 patients with clinical and/or imaging findings of SIH, 0.9% of patients were diagnosed with CVST and 3 of these patients (60%) had additional severe complications.
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Affiliation(s)
- Oien M
- Departments of Radiology, Mayo Clinic, Rochester, MN, USA
| | | | - Garza I
- Departments of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Kissoon NR
- Neurology, Mayo Clinic, Rochester, MN, USA
| | - Carr CM
- Departments of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Brinjikji W
- Departments of Radiology, Mayo Clinic, Rochester, MN, USA
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Kobayashi Y, Kamijima S, Okumura G, Morizumi T, Nagamatsu K, Shimizu Y, Sasaki T, Sato A. Cavernous Sinus Swelling and Abducens Nerve Paresis Due to Intracranial Hypotension. Intern Med 2022; 61:3111-3113. [PMID: 35342130 PMCID: PMC9646353 DOI: 10.2169/internalmedicine.8488-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The most common neurological symptom of spontaneous intracranial hypotension (SIH) is abducens nerve paresis, and the precise pathophysiology is unclear. The accepted explanation is traction on the cranial nerves caused by the downward displacement of the cranial content. We herein report magnetic resonance imaging of SIH that can explain the mechanism underlying abducens nerve paresis. The cavernous sinuses were particularly thickened compared with the surrounding dura. This phenomenon can be explained by venous swelling, which can occur after leakage of cerebrospinal fluid in a closed cavity. This swelling pushes the abducens nerve up, which then causes abducens nerve paresis.
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Affiliation(s)
| | | | - Gaku Okumura
- Department of Neurology, Ina Central Hospital, Japan
| | | | | | | | - Tetsuo Sasaki
- Department of Neurosurgery, Ina Central Hospital, Japan
| | - Atsushi Sato
- Department of Neurosurgery, Ina Central Hospital, Japan
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50
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Lee SY, Park BY, Ryu T, Lee JH, Kim DH, Roh WS. Linear indices of ventricular volume on brain computed tomography as markers of effectiveness of epidural blood patch for spontaneous intracranial hypotension: A case report. Medicine (Baltimore) 2022; 101:e29279. [PMID: 35960083 PMCID: PMC9371481 DOI: 10.1097/md.0000000000029279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
RATIONALE Epidural blood patch (EBP) is an effective treatment for spontaneous intracranial hypotension (SIH). However, its effectiveness can only be judged through subjective symptom improvement; no objective markers have been reported. Linear indices of ventricular volume on brain computed tomography (CT) may aid the objective evaluation of the effectiveness of EBP in patients with SIH. PATIENT CONCERNS A 45-year-old man was hospitalized due to a 3-week history of orthostatic headache, dizziness, and neck pain. He had visited a local emergency department at symptom onset. His neurological examination results were normal and vital signs were stable. DIAGNOSES Brain magnetic resonance imaging (MRI) revealed pachymeningeal enhancement in both convexities with a small subdural hematoma (SDH). Based on the clinical features and MRI findings, he was diagnosed with SIH complicated by SDH. INTERVENTIONS Non-targeted EBP was performed, first at the lumbar level and subsequently at the thoracic level. Linear indices of ventricular volume, including the Evans' index, frontal-occipital horn ratio, and bicaudate index, were measured through brain CT performed before and after EBP. OUTCOMES After lumbar EBP, there was no symptom relief or increase in linear indices of ventricular volume on brain CT. In contrast, the patient's symptoms completely resolved and the linear indices of ventricular volume increased after thoracic EBP. LESSONS The effectiveness of EBP, which is currently evaluated solely based on changes in symptom severity, can be assessed using linear indices of ventricular volume.
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Affiliation(s)
- So Young Lee
- Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Nam-gu, Daegu, Republic of Korea
| | - Bum Young Park
- Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Nam-gu, Daegu, Republic of Korea
| | - Taeha Ryu
- Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Nam-gu, Daegu, Republic of Korea
| | - Ji Hyeon Lee
- Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Nam-gu, Daegu, Republic of Korea
| | - Dong Hyuck Kim
- Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Nam-gu, Daegu, Republic of Korea
| | - Woon Seok Roh
- Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, Nam-gu, Daegu, Republic of Korea
- *Correspondence: Woon Seok Roh, Department of Anesthesiology and Pain Medicine, Daegu Catholic University Medical Center, School of Medicine, Daegu Catholic University, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu 42472, Republic of Korea (e-mail: )
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