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Li S, Liao C, Cheng G, Wu Y, Zhang W. Proximal trigeminal nerve atrophy is associated with favourable outcomes and persistent facial numbness following percutaneous balloon compression for primary trigeminal neuralgia. Acta Neurochir (Wien) 2023; 165:3867-3876. [PMID: 37953302 DOI: 10.1007/s00701-023-05849-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/15/2023] [Indexed: 11/14/2023]
Abstract
OBJECTIVE Whether nerve atrophy can affect the prognosis of primary trigeminal neuralgia (PTN) patients undergoing percutaneous balloon compression (PBC) remains unclear. This study aimed to determine the association between nerve characteristics observed on preoperative magnetic resonance imaging (MRI) and PBC outcomes. METHODS Between January 2019 and December 2022, a cohort of 58 patients with unilateral PTN treated with PBC were analysed retrospectively and included in this study. The relationship between MRI findings, including the proximal and distal nerve cross-sectional areas (CSAs), and favourable pain outcomes (BNI Grades I-III) was analysed through Kaplan‒Meier analysis. RESULTS After a mean follow-up period of 23.8 ± 13.0 months (range, 6-50 months), 48 (82.8%) patients with PTN were pain free with or without medication. A smaller proximal CSA ratio (proximal CSA of the affected nerve/proximal CSA of the unaffected nerve) was significantly associated with favourable outcomes. The Kaplan-Meier survival analysis showed that patients with proximal nerve atrophy (proximal CSA ratio ≤ 87% after receiver operating characteristic curve analysis) had a higher estimated 4-year probability of maintaining a favourable outcome than those without nerve atrophy (94.4% vs. 30.8%, p = 0.005). In addition, patients with proximal nerve atrophy were more likely to suffer from postoperative persistent facial numbness. CONCLUSIONS Proximal nerve atrophy is correlated with both favourable outcomes and persistent facial numbness following PBC. Prospective studies are required to determine the optimal duration and pressure of balloon compression in relation to the proximal CSA ratio to achieve better pain outcomes and less facial numbness.
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Affiliation(s)
- Shuo Li
- Department of Neurosurgery, Shanghai Ninth People's Hospital, affiliated to Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Huangpu District, Shanghai, 200011, China
| | - Chenlong Liao
- Department of Neurosurgery, Shanghai Ninth People's Hospital, affiliated to Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Huangpu District, Shanghai, 200011, China
| | - Guo Cheng
- Department of Neurosurgery, Shanghai Ninth People's Hospital, affiliated to Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Huangpu District, Shanghai, 200011, China
| | - Yiwei Wu
- Department of Neurosurgery, Shanghai Ninth People's Hospital, affiliated to Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Huangpu District, Shanghai, 200011, China
| | - Wenchuan Zhang
- Department of Neurosurgery, Shanghai Ninth People's Hospital, affiliated to Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Huangpu District, Shanghai, 200011, China.
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Arora AJ, R Kona KK, Pawar R, Jyotsna Y. Correlation of Prepontine Cisternal Space Thickness with the Severity of Neurovascular Conflict and its Role in Predicting Outcome of Medical Management in Cases of Trigeminal Neuralgia. Neurol India 2023; 71:959-963. [PMID: 37929434 DOI: 10.4103/0028-3886.388100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Background Trigeminal neuralgia (TN) is a debilitating disorder that presents with sudden onset of severe, unilateral, paroxysmal, and lancinating pain usually lasting for few seconds to few minutes. Aims and Objectives The main aim of our study was to correlate the prepontine cisternal space thickness, with a severity of neurovascular compression (NVC) and percentage reduction of pain (patient outcome). Materials and Methods Ours is an observational prospective study of 40 patients presenting with TN for magnetic resonance imaging in our department. Patients were followed up on medical treatment and their pain severity evaluated on their follow-up visit. Patients were divided into two groups based on prepontine cisternal space (Group A: ≤4 mm, Group B: >4 mm) and into three groups based on the percentage reduction of pain, Group 1 (0-35%), Group 2 (36-70%), and Group 3 consisted of patients with pain reduction of more than 70%. Ipsilateral prepontine cisternal space thickness was correlated with grade of NVC and percentage reduction of pain. Results Mean percentage of pain reduction in group A and group B was 34.12 and 60.68%, respectively. Approximately 23.80% of grade1 NVC were seen in group A and 76.20% in group B, while 80% of grade 3 NVC were seen in group A and only 20% were seen in group B. Conclusion There was poor response to medical treatment, in patients with narrowed prepontine cisternal space thickness with an inverse relationship between the grade of NVC and cisternal space thickness.
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Affiliation(s)
- Abhishek J Arora
- Department of Radiodiagnosis, All India Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Kiran K R Kona
- Department of Radiology and Imageology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Rajsree Pawar
- Department of Radiology and Imageology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Y Jyotsna
- Department of Radiology and Imageology, Nizam's Institute of Medical Sciences, Hyderabad, Telangana, India
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Yang JX, Aygun N, Nadgir RN. Imaging of the Postoperative Skull Base and Cerebellopontine Angle. Neuroimaging Clin N Am 2021; 32:159-174. [PMID: 34809836 DOI: 10.1016/j.nic.2021.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
For pathologic conditions affecting the skull base and cerebellopontine angle, imaging techniques have advanced to assess for residual disease, disease progression, and postoperative complications. Knowledge regarding various surgical approaches of skull base tumor resection, expected postoperative appearance, and common postsurgical complications guides radiologic interpretation. Complexity of skull base anatomy, small size of the relevant structures, lack of familiarity with surgical techniques, and postsurgical changes confound radiologic evaluation. This article discusses the imaging techniques, surgical approaches, expected postoperative changes, and complications after surgery of the skull base, with emphasis on the cerebellopontine angle, anterior cranial fossa, and central skull base regions.
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Affiliation(s)
- Jeffrey Xi Yang
- Division of Neuroradiology, Department of Radiology and Radiological Science, Johns Hopkins Hospital, 600 North Wolfe Street, Baltimore, MD 21287, USA
| | - Nafi Aygun
- Division of Neuroradiology, Department of Radiology and Radiological Science, Johns Hopkins Hospital, 600 North Wolfe Street, Baltimore, MD 21287, USA
| | - Rohini Narahari Nadgir
- Division of Neuroradiology, Department of Radiology and Radiological Science, Johns Hopkins Hospital, 600 North Wolfe Street, Baltimore, MD 21287, USA.
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Boeddinghaus R, Whyte A. Imaging of Trigeminal Neuralgia and Other Facial Pain. Neuroimaging Clin N Am 2021; 31:485-508. [PMID: 34689929 DOI: 10.1016/j.nic.2021.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We review and illustrate the radiology of facial pain, emphasizing trigeminal neuralgia, relevant anatomy, current classification, concepts about etiology, and the role of imaging and its influence on the choice of treatment. We discuss glossopharyngeal neuralgia, other neuropathic causes of facial pain, postinflammatory and neoplastic causes, and nociceptive (end-organ) causes of facial pain, as well as referred otalgia. Other conditions that may present with facial pain, including trigeminal autonomic cephalgias and giant cell arteritis, are reviewed briefly. We discuss the elements of a comprehensive MR imaging protocol to enable detection of these diverse causes of facial pain.
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Affiliation(s)
- Rudolf Boeddinghaus
- Perth Radiological Clinic, 127 Hamersley Road, Subiaco, Western Australia 6008, Australia; Department of Surgery, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia.
| | - Andy Whyte
- Department of Medicine and Radiology, University of Melbourne, Grattan Street, Parkville, Victoria 3010, Australia; Department of Dentistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
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Xie E, Garzon-Muvdi T, Bender M, Doshi T, Carson B, Lim M, Bettegowda C. Association Between Radiofrequency Rhizotomy Parameters and Duration of Pain Relief in Trigeminal Neuralgia Patients with Recurrent Pain. World Neurosurg 2019; 129:e128-e133. [PMID: 31102773 DOI: 10.1016/j.wneu.2019.05.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Radiofrequency rhizotomy (RFR) is a commonly used, effective procedure for trigeminal neuralgia (TN), but a subset of patients experiences pain recurrence and requires subsequent surgeries. Currently, the rhizotomy temperature and duration of application are empirically determined, and there is no consensus on what settings are most beneficial. In this study, we analyzed patients who underwent trigeminal RFR and had subsequent surgeries to identify whether rhizotomy parameters were associated with the duration of pain relief. METHODS Single-center, retrospective analysis of patients undergoing RFR for TN from 1995 to 2016. The primary endpoint was subsequent procedure. Associations with rhizotomy parameters and covariates were assessed using Cox regression analysis. RESULTS The study included 338 patients, average age 65 years; 61% were women. Temperature was significantly associated with both the degree of immediate postoperative pain relief and the duration of pain relief, and in subgroup analyses by multiple sclerosis status and RFR procedural count. Ablation duration was also independently significant, though not when analyzed alongside age, sex, and race. Duration of pain relief was generally shorter in patients with multiple sclerosis and in repeated RFR. CONCLUSIONS Higher temperatures may be necessary to achieve pain relief in some patients, given the progressive nature of the facial pain, but they are not associated with longer duration of pain relief in patients who have recurrent pain. Modulation of the ablation duration does not seem to affect the short-term or long-term outcomes.
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Affiliation(s)
- Eric Xie
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Tomas Garzon-Muvdi
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Matthew Bender
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Tina Doshi
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Benjamin Carson
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Michael Lim
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Chetan Bettegowda
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
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