1
|
Yang HH, Patel VS, Yang I, Gopen QS. Low-Lying Tegmen and Surgical Outcomes Following the Middle Cranial Fossa Repair of Superior Canal Dehiscence. Otolaryngol Head Neck Surg 2024; 170:195-203. [PMID: 37598319 DOI: 10.1002/ohn.480] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/25/2023] [Accepted: 07/19/2023] [Indexed: 08/21/2023]
Abstract
OBJECTIVE To compare treatment response from the middle cranial fossa repair of superior canal dehiscence (SCD) between cases with and cases without low-lying tegmen (LLT). STUDY DESIGN Cohort study. SETTING Single tertiary care institution. METHODS Two investigators independently reviewed preoperative high-resolution temporal bone computed tomography images and classified the ipsilateral tegmen as either "low-lying" or "control." Patients completed a symptom questionnaire and underwent audiometric testing pre- and post-operatively. Multivariable regression models assessed for symptomatic resolution and audiometric improvement following surgery with tegmen status as the primary predictor. Models controlled for patient age, sex, bilateral SCD disease, dehiscence location, prior ear surgery status, surgery duration, and follow-up duration. RESULTS Among a total of 410 cases included, we identified 121 (29.5%) LLT cases. Accounting for all control measures, patients with LLT were significantly less likely to experience overall symptom improvement (adjusted odds ratio: 0.32, 95% confidence interval [CI]: 0.18-0.57, p < .001) and reported a significantly lower proportion of preoperative symptoms that resolved following surgery (adjusted β: -25.6%, 95% CI: -37.0% to -14.3%, p < .001). However, audiometric outcomes following surgery did not differ significantly between patients with and patients without LLT. CONCLUSION This is the first investigation on the relationship between LLT and surgical outcomes following the middle fossa repair of SCD. Patients with LLT reported less favorable symptomatic response but exhibited a similar degree of audiometric improvement.
Collapse
Affiliation(s)
- Hong-Ho Yang
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| | - Vishal S Patel
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| | - Isaac Yang
- Department of Neurosurgery, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| | - Quinton S Gopen
- Department of Head and Neck Surgery, David Geffen School of Medicine at University of California, Los Angeles, California, USA
| |
Collapse
|
2
|
Yang HH, Lum M, Kaur T, Yang I, Gopen QS. Postoperative Pneumolabyrinth Following the Middle Cranial Fossa Approach for Superior Semicircular Canal Dehiscence Repair, 2014-2020. Otolaryngol Head Neck Surg 2023; 168:453-461. [PMID: 35727631 DOI: 10.1177/01945998221106688] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 05/25/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The present study investigates risk factors and clinical outcomes of postoperative pneumolabyrinth following the middle cranial fossa approach for superior semicircular canal dehiscence repair, a complication that has not been documented previously. STUDY DESIGN Retrospective cohort study. SETTING Tertiary/quaternary care referral center. METHODS We conducted a retrospective review of 332 middle cranial fossa procedures from 2014 to 2020 at a tertiary/quaternary care institution. Upon identifying pneumolabyrinth cases from postoperative computed tomography temporal bone scans, we conducted multivariable logistic regression analysis to explore demographic and clinical factors that were independently linked to this complication. We also compared the rates of postoperative symptoms among patients with different grades of pneumolabyrinth. RESULTS We identified 41 (12.3%) pneumolabyrinth cases. Patients with older age, higher preoperative pure tone average, and frank dehiscence were at higher risk for pneumolabyrinth. Furthermore, patients with pneumolabyrinth reported significantly higher rates of postoperative dizziness and exhibited significantly greater pure tone average and air-bone gap postoperatively as compared with patients without pneumolabyrinth. Finally, higher-grade pneumolabyrinth was associated with increased rates of postoperative hearing loss, and grade III pneumolabyrinth was associated with higher rates of postoperative tinnitus vs grade I and II cases. CONCLUSION Pneumolabyrinth following the middle cranial fossa approach was associated with poor clinical outcomes, including dizziness and auditory impairment. Old age, high preoperative pure tone average, and frank dehiscence were risk factors for this complication. The highlighted parameters may be important to note when considering this approach as a treatment option and while monitoring postoperative recovery.
Collapse
Affiliation(s)
- Hong-Ho Yang
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Meachelle Lum
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Taranjit Kaur
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Isaac Yang
- Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Quinton S Gopen
- Department of Head and Neck Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| |
Collapse
|
3
|
Vestibular Migraine Confounds Management of Superior Canal Dehiscence Syndrome. Otol Neurotol 2022; 43:835-839. [PMID: 35878641 DOI: 10.1097/mao.0000000000003584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the prevalence of vestibular migraine (VM) in a cohort of patients with radiologic confirmation of superior canal dehiscence (SCD) and to compare management of superior canal dehiscence syndrome (SCDS) in patients with and without comorbid VM. STUDY DESIGN Retrospective review of a SCD database. SETTING University-based tertiary medical center. PATIENTS Ninety-one patients identified with SCD from 2009 to 2017. INTERVENTIONS None. MAIN OUTCOME MEASURES Coincidence of VM and SCD, and resolution of symptoms. RESULTS Ninety-one patients with SCD met the inclusion and exclusion criteria. VM was diagnosed in 36 (39.6%) patients. Of those receiving medical therapy for VM alone, five (45.5%) reported symptom resolution, five (45.5%) reported partial improvement, one (9.1%) had no change, and none worsened. Fifteen patients (41.7%) were treated with both surgery (for SCD) and medical therapy (for VM). Seven (46.7%) reported symptom resolution, seven (46.7%) reported partial improvement, and one (6.7%) worsened. There was no statistically significant difference in symptom resolution between SCD + VM patients who were treated medically compared with those treated with medical therapy and surgery (p = 0.951). There was no significant difference in symptom resolution after surgery between SCD + VM and SCD-only cohorts (p = 0.286). CONCLUSIONS This is the first study describing the incidence of VM in a cohort of patients with SCDS. The symptoms of VM confound those of SCDS and unrecognized or undertreated VM may contribute to surgical failure in SCDS. Therefore, we recommend a high index of suspicion for VM in patients with SCDS and a trial of medical therapy in the setting of suspected VM.
Collapse
|
4
|
Transmastoid Occlusion Surgery for Superior Semicircular Canal Dehiscence Syndrome Improves Patient-Reported Quality-of-Life Measures and corrects cVEMP Thresholds and Amplitudes. Otol Neurotol 2021; 42:1534-1543. [PMID: 34420021 DOI: 10.1097/mao.0000000000003329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To determine the pre- and postoperative clinical, audiological, vestibular, and patient-reported measures in patients undergoing transmastoid occlusion surgery for superior canal dehiscence syndrome (SCDS). STUDY DESIGN Retrospective case review. SETTING Tertiary referral centre, UK. PATIENTS All primary transmastoid occlusion surgeries for SCDS were included (tertiary centre, single-surgeon), January 2008 to July 2019. INTERVENTIONS Transmastoid superior canal occlusion surgery for SCDS. MAIN OUTCOME MEASURES We collated audiological (pure tone audiogram), vestibular (cervical vestibular evoked myogenic potentials [cVEMPs]), and patient-reported outcome measures (Dizziness Handicap Inventory and subjective symptom grading). RESULTS Fifty-two patients (55 ears) met the inclusion criteria. Thirty-one (56%) were female. Mean age was 47 years (range 29-63) and mean follow-up of 11.2 months. Six patients had bilateral disease, four of whom underwent sequential, bilateral surgery.Autophony was the most frequent presenting symptom, improving in 92%.Significant improvements were self-reported in patients' autophony (p < 0.0001), pressure- and noise-induced dizziness (p < 0.0001 and p < 0.0001), aural fullness (p = 0.0159), pulsatile tinnitus (p < 0.0001), perceived hearing loss (p = 0.0058), and imbalance (p = 0.0303).Overall Dizziness Handicap Inventory scores reduced from 45.9 to 27.4 (p < 0.0001), and across all subgroups of functional (p = 0.0003), emotional (p < 0.0001), and physical handicap (p = 0.0005).A 6.4-dB HL improvement in the air-bone gap (500-1000 Hz) occurred (95% confidence intervals 3.3-9.4 dB HL, p < 0.0001). There were no dead ears. cVEMP thresholds, when recordable, normalized in all except two ears. CONCLUSIONS Transmastoid occlusion is effective at improving patient-reported outcomes and normalizing cVEMP thresholds, though some symptoms, notably disequilibrium, persist to a variable degree.
Collapse
|
5
|
Unterberger A, Miller J, Gopen Q, Yang I. Bilateral Superior Semicircular Canal Dehiscence Concurrent With Ehlers-Danlos Syndrome: A Case Report. Cureus 2021; 13:e19943. [PMID: 34984117 PMCID: PMC8714038 DOI: 10.7759/cureus.19943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2021] [Indexed: 11/05/2022] Open
Abstract
Superior semicircular canal dehiscence (SSCD) is characterized by temporal bone thinning, which creates an opening between the inner ear and middle cranial fossa. Ehlers-Danlos syndrome, hypermobility type (EDS-HT) is a genetic collagen synthesis disorder, often resulting in bony abnormalities. We present the case of a 39-year-old female with EDS-HT who exhibited the otological symptoms characteristic of bilateral SSCD. High-resolution computed tomography (CT) scans confirmed the diagnosis. The patient elected for middle fossa craniotomy and noted symptomatic improvement. Due to its potential to confer bone fragility, EDS-HT may predispose SSCD development. Further examination of the relationship between these disorders is necessary.
Collapse
Affiliation(s)
- Ansley Unterberger
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, USA
| | - Jessa Miller
- Otolaryngology - Head and Neck Surgery, University of California, Los Angeles, Los Angeles, USA
| | - Quinton Gopen
- Otolaryngology - Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, USA
| | - Isaac Yang
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, USA
| |
Collapse
|
6
|
Patel KS, Sun MZ, Willis SL, Alemnew M, De Jong R, Evans AS, Duong C, Gopen Q, Yang I. Selective scalp block decreases short term post-operative pain scores and opioid use after craniotomy: A case series. J Clin Neurosci 2021; 93:183-187. [PMID: 34656245 DOI: 10.1016/j.jocn.2021.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/12/2021] [Accepted: 09/06/2021] [Indexed: 10/20/2022]
Abstract
There is no consensus on the management of post-craniotomy pain. Several randomized controlled trials have examined the use of a regional scalp block for post-craniotomy pain. We aim to investigate whether scalp block affected short or long-term pain levels and opioid use after craniotomy. This study prospectively administered selective scalp blocks (lesser occipital, preauricular nerve block + pin site block) in 20 consecutive patients undergoing craniotomy for semicircular canal dehiscence. Anesthesia, pain, and opioid outcomes in these patients were compared to 40 consecutive historic controls. There was no significant difference in patient demographics between the two groups and no complications related to selective scalp block. The time between the end of procedure and end of anesthesia decreased in the scalp block group (16 vs 21 min, P = 0.047). Pain scores were significantly less in the scalp block group for the first 4 h, after which there was no statistically significant difference. Time to opioid rescue was longer in the scalp block group (3.6 vs 1.8 h, HR 0.487, P = 0.0361) and opioid use in the first 7 h was significantly less in the scalp block group. Total opioid use, outpatient opioid use, and length of stay did not differ. Selective scalp block is a safe and effective tool for short-term management of postoperative pain after craniotomy and decreases the medication requirement during emergence and recovery. Selective scalp block can speed up OR turnover but is not efficacious in the treatment of postoperative pain beyond this point.
Collapse
Affiliation(s)
- Kunal S Patel
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Matthew Z Sun
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Shelby L Willis
- Department of Head & Neck Surgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Mahlet Alemnew
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Russell De Jong
- Department of Head & Neck Surgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Audree S Evans
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Courtney Duong
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Quinton Gopen
- Department of Head & Neck Surgery, University of California Los Angeles, Los Angeles, CA, United States
| | - Isaac Yang
- Department of Neurosurgery, University of California Los Angeles, Los Angeles, CA, United States; Department of Head & Neck Surgery, University of California Los Angeles, Los Angeles, CA, United States; Department of Radiation Oncology, University of California Los Angeles, Los Angeles, CA, United States; Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA, United States; Department of Surgery, Harbor-UCLA Los Angeles, Los Angeles, CA, United States; Los Angeles Biomedical Research Center, Harbor-UCLA Los Angeles, Los Angeles, CA, United States.
| |
Collapse
|
7
|
Tran ED, Swanson A, Sharon JD, Vaisbuch Y, Blevins NH, Fitzgerald MB, Steenerson KK. Ocular Vestibular-Evoked Myogenic Potential Amplitudes Elicited at 4 kHz Optimize Detection of Superior Semicircular Canal Dehiscence. Front Neurol 2020; 11:879. [PMID: 32982915 PMCID: PMC7477389 DOI: 10.3389/fneur.2020.00879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 07/09/2020] [Indexed: 02/04/2023] Open
Abstract
Introduction: High-resolution temporal bone computed tomography (CT) is considered the gold standard for diagnosing superior semicircular canal dehiscence (SCD). However, CT has been shown over-detect SCD and provide results that may not align with patient-reported symptoms. Ocular vestibular-evoked myogenic potentials (oVEMPs)—most commonly conducted at 500 Hz stimulation—are increasingly used to support the diagnosis and management of SCD. Previous research reported that stimulation at higher frequencies such as 4 kHz can have near-perfect sensitivity and specificity in detecting radiographic SCD. With a larger cohort, we seek to understand the sensitivity and specificity of 4 kHz oVEMPs for detecting clinically significant SCD, as well as subgroups of radiographic, symptomatic, and surgical SCD. We also investigate whether assessing the 4 kHz oVEMP n10-p15 amplitude rather than the binary n10 response alone would optimize the detection of SCD. Methods: We conducted a cross-sectional study of patients who have undergone oVEMP testing at 4 kHz. Using the diagnostic criteria proposed by Ward et al., patients were determined to have SCD if dehiscence was confirmed on temporal bone CT by two reviewers, patient-reported characteristic symptoms, and if they had at least one positive vestibular or audiometric test suggestive of SCD. Receiver operating characteristic (ROC) analysis was conducted to identify the optimal 4 kHz oVEMP amplitude cut-off. Comparison of 4 kHz oVEMP amplitude across radiographic, symptomatic, and surgical SCD subgroups was conducted using the Mann-Whitney U test. Results: Nine hundred two patients (n, ears = 1,804) underwent 4 kHz oVEMP testing. After evaluating 150 temporal bone CTs, we identified 49 patients (n, ears = 61) who had radiographic SCD. Of those, 33 patients (n, ears = 37) were determined to have clinically significant SCD. For this study cohort, 4 kHz oVEMP responses had a sensitivity of 86.5% and a specificity of 87.8%. ROC analysis demonstrated that accounting for the inter-amplitude of 4 kHz oVEMP was more accurate in detecting SCD than the presence of n10 response alone (AUC 91 vs. 87%). Additionally, using an amplitude cut-off of 15uV reduces false positive results and improves specificity to 96.8%. Assessing 4 kHz oVEMP response across SCD subgroups demonstrated that surgical and symptomatic SCD cases had significantly higher amplitudes, while radiographic SCD cases without characteristic symptoms had similar amplitudes compared to cases without evidence of SCD. Conclusion: Our results suggest that accounting for 4 kHz oVEMP amplitude can improve detection of SCD compared to the binary presence of n10 response. The 4 kHz oVEMP amplitude cut-off that maximizes sensitivity and specificity for our cohort is 15 uV. Our results also suggest that 4 kHz oVEMP amplitudes align better with symptomatic SCD cases compared to cases in which there is radiographic SCD but no characteristic symptoms.
Collapse
Affiliation(s)
- Emma D Tran
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Austin Swanson
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Jeffrey D Sharon
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, CA, United States
| | - Yona Vaisbuch
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, United States.,Department of Otolaryngology-Head and Neck Surgery, Rambam Medical Center, Haifa, Israel
| | - Nikolas H Blevins
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Matthew B Fitzgerald
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - Kristen K Steenerson
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, United States
| |
Collapse
|
8
|
Current management of superior semicircular canal dehiscence syndrome. Curr Opin Otolaryngol Head Neck Surg 2020; 28:340-345. [DOI: 10.1097/moo.0000000000000657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
9
|
Romiyo P, Duong C, Ng E, Wung V, Udawatta M, Nguyen T, Sheppard JP, Preet K, Alemnew M, Seo D, Gopen Q, Yang I. Superior semicircular canal dehiscence postoperative outcomes: A case series of 156 repairs. J Clin Neurosci 2019; 68:69-72. [DOI: 10.1016/j.jocn.2019.07.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/05/2019] [Accepted: 07/16/2019] [Indexed: 10/26/2022]
|
10
|
Nguyen T, Sheppard JP, Duong C, Ding K, Dejam D, Alkhalid Y, Romiyo P, Azzam D, Prashant G, Gopen Q, Yang I. Age and gender considerations on the symptomology in patients with superior semicircular canal dehiscence: A systematic review and case illustration. J Clin Neurosci 2019; 65:112-120. [DOI: 10.1016/j.jocn.2019.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 03/11/2019] [Accepted: 04/12/2019] [Indexed: 12/16/2022]
|
11
|
Different Materials for Plugging a Dehiscent Superior Semicircular Canal: A Comparative Histologic Study Using a Gerbil Model. Otol Neurotol 2019; 40:e532-e541. [DOI: 10.1097/mao.0000000000002205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
12
|
Zhu RT, Van Rompaey V, Ward BK, Van de Berg R, Van de Heyning P, Sharon JD. The Interrelations Between Different Causes of Dizziness: A Conceptual Framework for Understanding Vestibular Disorders. Ann Otol Rhinol Laryngol 2019; 128:869-878. [DOI: 10.1177/0003489419845014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background:According to population-based studies that estimate disease prevalence, the majority of patients evaluated at dizziness clinics receive a single vestibular diagnosis. However, accumulating literature supports the notion that different vestibular disorders are interrelated and often underdiagnosed.Objective:Given the complexity and richness of these interrelations, we propose that a more inclusive conceptual framework to vestibular diagnostics that explicitly acknowledges this web of association will better inform vestibular differential diagnosis.Methods:A narrative review was performed using PubMed database. Articles were included if they defined a cohort of patients, who were given specific vestibular diagnosis. The interrelations among vestibular disorders were analyzed and placed within a conceptual framework.Results:The frequency of patients currently receiving multiple vestibular diagnoses in dizziness clinic is approximately 3.7% (1263/33 968 patients). The most common vestibular diagnoses encountered in the dizziness clinic include benign paroxysmal positional vertigo (BPPV), vestibular migraine, vestibular neuritis, and Ménière’s disease.Conclusions:A review of the literature demonstrates an intricate web of interconnections among different vestibular disorders such as BPPV, vestibular migraine, Ménière’s disease, vestibular neuritis, bilateral vestibulopathy, superior canal dehiscence syndrome, persistent postural perceptual dizziness, anxiety, head trauma, and aging, among others.
Collapse
Affiliation(s)
- Richard T. Zhu
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Vincent Van Rompaey
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology & Head and Neck Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Bryan K. Ward
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Raymond Van de Berg
- Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Paul Van de Heyning
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology & Head and Neck Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Jeffrey D. Sharon
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, California, USA
| |
Collapse
|
13
|
Incidence of intraoperative hearing loss during middle cranial fossa approach for repair of superior semicircular canal dehiscence. J Clin Neurosci 2018; 54:109-112. [DOI: 10.1016/j.jocn.2018.06.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 06/06/2018] [Indexed: 11/18/2022]
|
14
|
Nguyen T, Lagman C, Sheppard JP, Duong C, Ong V, Poon J, Alkhalid Y, Azzam D, Romiyo P, Prashant GN, Gopen Q, Yang I. Bone Metabolic Markers in the Clinical Assessment of Patients with Superior Semicircular Canal Dehiscence. World Neurosurg 2018; 114:e42-e50. [PMID: 29452318 DOI: 10.1016/j.wneu.2018.02.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 02/03/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Superior semicircular canal dehiscence (SSCD) is a bony defect in the osseous shell of the petrous temporal bone. The pathophysiological association between osteoporosis and SSCD remains poorly understood. We investigated the relationship between bone metabolic markers and symptoms in patients with SSCD. METHODS We collected patient demographics and clinical parameters for adult patients diagnosed with SSCD on high-resolution computed tomography scans. We used point-biserial correlation analysis to investigate the relationship between bone metabolic markers and symptoms in patients with SSCD. We compared clinical symptoms before and after surgical repair of SSCD through a middle fossa craniotomy using McNemar's test for paired comparisons of binary measures. RESULTS We included a total of 99 patients (64 females and 35 males; average age 52 years; 118 surgeries). The level of serum calcium correlated with the need for a second surgery (rpb = -0.35, P = 0.001). Postoperative calcium supplementation negatively correlated with improvement in dizziness (rpb = -0.36, P = 0.01). The level of 25-hydroxyvitamin D correlated with preoperative hyperacusis (rpb = -0.98, P = 0.02) and postoperative autophony (rpb = 0.96, P = 0.04). Postoperative vitamin D supplementation positively correlated with hearing decline (rpb = 0.04, P = 0.04) The level of thyroid stimulating hormone correlated with preoperative autophony, amplification, and tinnitus (rpb = -0.71, rpb = -0.75, rpb = -0.70, all P < 0.001). CONCLUSIONS Bone metabolic markers could be important in the clinical assessment of SSCD patients and could be potential targets for symptom management.
Collapse
Affiliation(s)
- Thien Nguyen
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Carlito Lagman
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - John P Sheppard
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Courtney Duong
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Vera Ong
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Jessica Poon
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Yasmine Alkhalid
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Daniel Azzam
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Prasanth Romiyo
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Giyarpuram N Prashant
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Quinton Gopen
- Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA
| | - Isaac Yang
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA; Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA; Department of Radiation Oncology, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA; Jonsson Comprehensive Cancer Center, Ronald Reagan UCLA Medical Center, Los Angeles, California, USA; David Geffen School of Medicine of the University of California, Los Angeles, Los Angeles, California, USA; Department of Neurosurgery, Harbor-UCLA Medical Center, Torrance, California, USA; Los Angeles Biomedical Research Institute (LA BioMed), Harbor-UCLA Medical Center, Torrance, California, USA.
| |
Collapse
|
15
|
Volkenstein S, Dazert S. Recent surgical options for vestibular vertigo. GMS CURRENT TOPICS IN OTORHINOLARYNGOLOGY, HEAD AND NECK SURGERY 2017; 16:Doc01. [PMID: 29279721 PMCID: PMC5738932 DOI: 10.3205/cto000140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Vertigo is not a well-defined disease but a symptom that can occur in heterogeneous entities diagnosed and treated mainly by otolaryngologists, neurologists, internal medicine, and primary care physicians. Most vertigo syndromes have a good prognosis and management is predominantly conservative, whereas the need for surgical therapy is rare, but for a subset of patients often the only remaining option. In this paper, we describe and discuss different surgical therapy options for hydropic inner ear diseases, Menière's disease, dehiscence syndromes, perilymph fistulas, and benign paroxysmal positional vertigo. At the end, we shortly introduce the most recent developments in regard to vestibular implants. Surgical therapy is still indicated for vestibular disease in selected patients nowadays when conservative options did not reduce symptoms and patients are still suffering. Success depends on the correct diagnosis and choosing among different procedures the ones going along with an adequate patient selection. With regard to the invasiveness and the possible risks due to surgery, in depth individual counseling is absolutely necessary. Ablative and destructive surgical procedures usually achieve a successful vertigo control, but are associated with a high risk for hearing loss. Therefore, residual hearing has to be included in the decision making process for surgical therapy.
Collapse
Affiliation(s)
- Stefan Volkenstein
- Department of Otolaryngology, Head & Neck Surgery, Ruhr-University of Bochum at the St. Elisabeth Hospital of Bochum, Germany
| | - Stefan Dazert
- Department of Otolaryngology, Head & Neck Surgery, Ruhr-University of Bochum at the St. Elisabeth Hospital of Bochum, Germany
| |
Collapse
|
16
|
Succar EF, Manickam PV, Wing S, Walter J, Greene JS, Azeredo WJ. Round window plugging in the treatment of superior semicircular canal dehiscence. Laryngoscope 2017; 128:1445-1452. [PMID: 28990655 DOI: 10.1002/lary.26899] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 08/01/2017] [Accepted: 08/11/2017] [Indexed: 11/07/2022]
Abstract
OBJECTIVES/HYPOTHESIS Objectives were to describe the use of round window plugging for superior semicircular canal dehiscence syndrome and review further recommendations regarding the procedure based on our experience and to compare results with recent literature on round window plugging. STUDY DESIGN Retrospective case series. METHODS Fourteen patients underwent round window plugging for superior semicircular canal dehiscence at our institution from 2012 to 2015. All patients underwent the same surgical procedure. Available pre- and postoperative data were reviewed. RESULTS Fourteen patient charts were reviewed. Symptoms of autophony improved in nine of 14 (64%) patients. Symptoms of pressure-induced vertigo improved in seven of 12 (58%) patients. Hennebert's sign that was positive preoperatively only improved in one of six (17%) patients. A positive preoperative vestibular evoked myogenic potential improved in only one of six (17%) patients. Six of 13 (46%) patients had increased air conduction thresholds postoperatively. CONCLUSIONS Round window plugging has been described as a less-invasive treatment for patients with superior semicircular canal dehiscence. Although the procedure did benefit some of our patients, successful outcomes were not predictable. Improvement in at least one objective finding was seen in only 21% of the patients studied. Hennebert's sign and vestibular evoked myogenic potentials that were positive preoperatively only improved in 17% of patients. At our institution, round window plugging is no longer considered a reasonable treatment option for most patients with superior semicircular canal dehiscence. We recommend that further study on this topic follow a standardized pre- and postoperative assessment. LEVEL OF EVIDENCE 4. Laryngoscope, 128:1445-1452, 2018.
Collapse
Affiliation(s)
- Eric F Succar
- Department of Otolaryngology , Geisinger Medical Center, Danville, Pennsylvania, U.S.A
| | | | - Sara Wing
- Commonwealth Medical College, Scranton, Pennsylvania, U.S.A
| | - Jeffrey Walter
- Department of Otolaryngology , Geisinger Medical Center, Danville, Pennsylvania, U.S.A
| | - Joseph S Greene
- Department of Otolaryngology , Geisinger Medical Center, Danville, Pennsylvania, U.S.A
| | - William J Azeredo
- Department of Otolaryngology , Geisinger Medical Center, Danville, Pennsylvania, U.S.A
| |
Collapse
|
17
|
Lagman C, Beckett JS, Chung LK, Chen CHJ, Voth BL, Gaonkar B, Gopen Q, Yang I. Novel Method of Measuring Canal Dehiscence and Evaluation of its Potential as a Predictor of Symptom Outcomes After Middle Fossa Craniotomy. Neurosurgery 2017; 83:459-464. [DOI: 10.1093/neuros/nyx430] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 07/13/2017] [Indexed: 12/20/2022] Open
Abstract
Abstract
BACKGROUND
Superior semicircular canal dehiscence (SSCD) is an osseous defect of the arcuate eminence of the petrous temporal bone. Strategies for measuring dehiscence size are variable, and the usefulness of such parameters remains in clinical equipoise.
OBJECTIVE
To present a novel method of measuring dehiscence volume and to evaluate its potential as a predictor of symptom outcomes after surgical repair of SSCD.
METHODS
High-resolution computed tomographic temporal bone images were imported into a freely available segmentation software. Dehiscence lengths and volumes were ascertained by independent authors. Inter-rater observer reliability was assessed using Cronbach's alpha. Correlation and regression analyses were performed to evaluate for relationships between dehiscence size and symptoms (pre- and post-operative).
RESULTS
Thirty-seven dehiscences were segmented using the novel volumetric assessment. Cronbach's alpha for dehiscence lengths and volumes were 0.97 and 0.95, respectively. Dehiscence lengths were more variable as compared to dehiscence volumes (σ2 8.92 vs σ2 0.55, F = 1.74). The mean dehiscence volume was 2.22 mm3 (0.74, 0.64-0.53 mm3). Dehiscence volume and headache at presentation were positively correlated (Rpb = 0.67, P = .03). Dehiscence volume and vertigo improvement after surgery were positively correlated, although this did not reach statistical significance (Rpb = 0.46, P = .21).
CONCLUSION
SSCD volumetry is a novel method of measuring dehiscence size that has excellent inter-rater reliability and is less variable compared to dehiscence length, but its potential as a predictor of symptom outcomes is not substantiated. However, the study is limited by low power.
Collapse
Affiliation(s)
- Carlito Lagman
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Joel S Beckett
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Lawrance K Chung
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Cheng Hao Jacky Chen
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Brittany L Voth
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Bilwaj Gaonkar
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Quinton Gopen
- Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Isaac Yang
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
- Department of Radiation Oncology, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
- Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, California
| |
Collapse
|
18
|
Lagman C, Ong V, Chung LK, Elhajjmoussa L, Fong C, Wang AC, Gopen Q, Yang I. Pediatric superior semicircular canal dehiscence: illustrative case and systematic review. J Neurosurg Pediatr 2017; 20:196-203. [PMID: 28548616 DOI: 10.3171/2017.3.peds1734] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The purpose of this study is to present an illustrative case of pediatric superior semicircular canal dehiscence (SSCD) and to systematically review the current published literature in the pediatric population. METHODS An electronic search of the Scopus, Web of Science, PsycINFO, Cochrane, and Embase databases was performed by 2 independent authors through January 2017. Search term combinations included "pediatrics," "children," "canal," and "dehiscence." Inclusion criteria were as follows: English, full-text clinical studies, case reports, and case series describing pediatric patient(s) (younger than 18 years) with CT evidence of SSCD. Baseline patient demographic characteristics, clinical presentations, dehiscence characteristics, management strategies, and outcome data were extracted. RESULTS A total of 14 studies involving 122 patients were included in the quantitative synthesis. The patients' mean age was 7.22 years. Male predominance was observed (approximate male-to-female ratio of 1.65:1). Neurodevelopmental disorders were common (n = 14, 11.5%). Auditory signs and symptoms were more common than vestibular signs and symptoms. Hearing loss (n = 62, 50.8%) was the most common auditory symptom and an indicator for imaging evaluation. Vertigo was the most common vestibular symptom (n = 8, 6.6%). Hearing aids were recommended in 8 cases (6.6%), and surgical repair was performed in 1 case (0.8%). Symptom outcomes and follow-up durations were infrequently reported. CONCLUSIONS The authors' data suggest that in pediatric SSCD, males are more commonly affected than females. This is different than the adult population in which females are predominantly affected. A history of otologic and/or neurodevelopmental abnormalities was common. There was a preponderance of auditory symptoms in this age group. Conservative management was favored in the majority.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Isaac Yang
- Departments of 1 Neurosurgery.,Radiation Oncology, and.,Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, California
| |
Collapse
|
19
|
Ossen ME, Stokroos R, Kingma H, van Tongeren J, Van Rompaey V, Temel Y, van de Berg R. Heterogeneity in Reported Outcome Measures after Surgery in Superior Canal Dehiscence Syndrome-A Systematic Literature Review. Front Neurol 2017; 8:347. [PMID: 28790965 PMCID: PMC5523725 DOI: 10.3389/fneur.2017.00347] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 07/03/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Superior canal dehiscence syndrome (SCDS) can be treated surgically in patients with incapacitating symptoms. However, the ideal treatment has not been determined. OBJECTIVES This systematic literature review aims to assess available evidence on the comparative effectiveness and risks of different surgical treatments regarding: (1) symptom improvement; (2) objectively measurable auditory and vestibular function; (3) adverse effects, and (4) length of hospitalization. SEARCH METHOD AND DATA SOURCES A systematic database search according to PRISMA statement was conducted on Pubmed, Embase, and Cochrane library. In addition, reference lists were searched. No correspondence with the authors was established. The last search was conducted on June 9, 2017. STUDY ELIGIBILITY CRITERIA Retrospective and prospective cohort studies were held applicable under the condition that they investigated the association between a surgical treatment method and the relief of vestibular and/or auditory symptoms. Only studies including quantitative assessment of the pre- to postoperative success rate of a surgical treatment method were included. Case reports, reviews, meta-analysis, and studies not published in English, Dutch, or German were excluded. DATA COLLECTION AND ANALYSIS The first author searched literature and extracted data; the first and last analyzed the data. MAIN RESULTS Seventeen studies (354 participants, 367 dehiscences) met the eligibility criteria and were grouped according to surgical approach. Seven combinations of surgical approaches and methods for addressing the dehiscence were identified: plugging, resurfacing, or a combination of both through the middle fossa (middle fossa approach); plugging, resurfacing, or a combination of both through the mastoid (transmastoid approach); round window reinforcement through the ear canal (transcanal approach). Several studies showed high internal validity, but quality was often downgraded due to study design (1). Outcome measures and timing of postsurgical assessment varied among studies, making it unfeasible to pool data to perform a meta-analysis. CONCLUSION A standardized protocol including outcome measures and timeframes is needed to compare the effectiveness and safety SCDS treatments. It should include symptom severity assessments and changes in vestibular and auditory function before and after treatment.
Collapse
Affiliation(s)
- Mira E Ossen
- Faculty of Medicine, Maastricht University, Maastricht, Netherlands
| | - Robert Stokroos
- Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Herman Kingma
- Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, Netherlands.,Faculty of Physics, Tomsk State University, Tomsk Russian Federation, Tomsk, Russia
| | - Joost van Tongeren
- Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Vincent Van Rompaey
- Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Yasin Temel
- Department of Neurosurgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Raymond van de Berg
- Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, Netherlands.,Faculty of Physics, Tomsk State University, Tomsk Russian Federation, Tomsk, Russia
| |
Collapse
|
20
|
Ung N, Chung LK, Lagman C, Bhatt NS, Barnette NE, Ong V, Gopen Q, Yang I. Outcomes of middle fossa craniotomy for the repair of superior semicircular canal dehiscence. J Clin Neurosci 2017. [PMID: 28622893 DOI: 10.1016/j.jocn.2017.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Superior semicircular canal dehiscence (SSCD) is a rare defect of the arcuate eminence that causes an abnormal connection between the superior semicircular canal and middle cranial fossa. Patients often present with a variety of auditory and vestibular symptoms. Trigger avoidance is the initial strategy, but surgery may be necessary in debilitating cases. We retrospectively reviewed SSCD patients undergoing repair via a middle fossa craniotomy between March 2011 and September 2015. Forty-nine patients undergoing 58 surgeries were identified. Autophony was the most common symptom at presentation (n=44; 90%). Mean follow-up was 10.9months, with 100% of patients reporting resolution of at least one symptom. Aural fullness was the most commonly resolved symptom following surgical repair (n=19/22; 86%). Hearing loss (n=11/25; 44%) and tinnitus (n=11/38; 29%) were the most common symptoms to persist following surgery. The most common symptom to develop after surgery was disequilibrium (n=4/18; 22%). Upon comparing the overall pre-operative and post-operative groups, the number of patients with autophony (p<0.0001), aural fullness (p=0.0006), hearing loss (p=0.0119), disequilibrium (p=0.0002), sound- and pressure-induced vertigo (p<0.0001), and tinnitus (p<0.0001) were significantly different. Improved clinical outcomes were demonstrated in patients undergoing SSCD repair through a middle cranial fossa approach. The most common presenting symptom (autophony) was also most likely to resolve after surgery. Hearing loss is less amenable to surgical correction. Disequilibrium developed in a small number of patients after repair.
Collapse
Affiliation(s)
- Nolan Ung
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States
| | - Lawrance K Chung
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States
| | - Carlito Lagman
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States
| | - Nikhilesh S Bhatt
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States
| | - Natalie E Barnette
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States
| | - Vera Ong
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States
| | - Quinton Gopen
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States; Department of Head and Neck Surgery, University of California, Los Angeles, 200 UCLA Medical Plaza, Suite 550, Los Angeles, CA 90095-6901, United States
| | - Isaac Yang
- Department of Neurosurgery, University of California, Los Angeles, 300 Stein Plaza, 5th Floor Wasserman Bldg., Los Angeles, CA 90095-6901, United States; Department of Head and Neck Surgery, University of California, Los Angeles, 200 UCLA Medical Plaza, Suite 550, Los Angeles, CA 90095-6901, United States; Jonsson Comprehensive Cancer Center, University of California, Los Angeles, 200 UCLA Medical Plaza, Suite B265, Los Angeles, CA 90095-6951, United States; Department of Radiation Oncology, University of California, Los Angeles, 200 UCLA Medical Plaza, Suite B265, Los Angeles, CA 90095-6951, United States.
| |
Collapse
|
21
|
Trieu V, Pelargos PE, Spasic M, Chung LK, Voth B, Ung N, Gopen Q, Yang I. Minimally Invasive Middle Fossa Keyhole Craniectomy for Repair of Superior Semicircular Canal Dehiscence. Oper Neurosurg (Hagerstown) 2017; 13:317-323. [DOI: 10.1093/ons/opw046] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 01/11/2017] [Indexed: 11/13/2022] Open
|
22
|
Beckett JS, Chung LK, Lagman C, Voth BL, Jacky Chen CH, Gaonkar B, Gopen Q, Yang I. A Method of Locating the Dehiscence during Middle Fossa Approach for Superior Semicircular Canal Dehiscence Surgery. J Neurol Surg B Skull Base 2017; 78:353-358. [PMID: 28725523 DOI: 10.1055/s-0037-1601886] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 02/28/2017] [Indexed: 12/19/2022] Open
Abstract
Objectives Superior semicircular canal dehiscence (SSCD) results from a defect in the middle cranial fossa floor. One challenge during SSCD repair is the lack of a consistent landmark. This study proposes a reference point above the external auditory canal at the level of the zygoma as the inferior craniectomy edge during surgery. Design This is a retrospective review of patients with SSCD. Setting/Participants A total of 72 cases of SSCD in 60 patients were repaired via a middle fossa approach at a single institution. Main Outcome Measures The distance from the proposed reference point to the dehiscence was statistically analyzed using Shapiro-Wilk's goodness-of-fit test and Student's t -test. Results Average distance for all patients was 28.84 ± 2.22 mm (range: 22.96-33.43). Average distance for females was 29.08 mm (range: 24.56-33.43) versus 28.26 mm (range: 22.96-32.36) for males. There was no difference in distance by sex ( p = 0.174). The distance measurements followed a normal distribution with 95% of the patients between 24.49 and 33.10 mm. Conclusion This study analyzed a potential reference point during a middle fossa approach for SSCD surgery. The distance from this reference point to the SSCD was found to be consistent and may serve as a readily identifiable landmark in localizing the dehiscence.
Collapse
Affiliation(s)
- Joel S Beckett
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California, United States
| | - Lawrance K Chung
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California, United States
| | - Carlito Lagman
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California, United States
| | - Brittany L Voth
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California, United States
| | - Cheng Hao Jacky Chen
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California, United States
| | - Bilwaj Gaonkar
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California, United States
| | - Quinton Gopen
- Department of Head and Neck Surgery, University of California, Los Angeles, Los Angeles, California, United States
| | - Isaac Yang
- Department of Neurosurgery, University of California, Los Angeles, Los Angeles, California, United States.,Department of Head and Neck Surgery, University of California, Los Angeles, Los Angeles, California, United States.,Department of Radiation Oncology, University of California, Los Angeles, Los Angeles, California, United States.,Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, California, United States
| |
Collapse
|
23
|
Chung LK, Lagman C, Nagasawa DT, Gopen Q, Yang I. Superior Semicircular Canal Dehiscence in a Patient with Ehlers-Danlos Syndrome: A Case Report. Cureus 2017; 9:e1141. [PMID: 28484680 PMCID: PMC5419820 DOI: 10.7759/cureus.1141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Superior semicircular canal dehiscence (SSCD) is a bony defect in the middle cranial fossa floor that results in an abnormal connection between the inner ear and cranial vault. Although the etiology of SSCD remains unclear, an inappropriately thin or fragile temporal bone likely predisposes an individual towards developing SSCD. Ehlers-Danlos syndrome (EDS) constitutes a group of genetic connective tissue disorders caused by a defect in the production, processing, or structure of collagen, or its associated proteins. The possible association between SSCD and EDS has not been previously described in the literature. We herein report a case of a 50-year-old female with EDS-hypermobility type who presented with a 15-year history of migraines, vertigo, and tinnitus. The patient was subsequently diagnosed with bilateral SSCD and underwent a right middle fossa (pre-auricular infratemporal) craniotomy for SSCD repair. She reported significant improvement in her auditory and vestibular symptoms, with the exception of continued mild dizziness and disequilibrium at the 3-month follow-up. Due to the rare reports of auditory symptoms in EDS, this case study highlights the importance of considering an otological consultation for auditory manifestations in a patient with EDS and illustrates a potential association between EDS and SSCD.
Collapse
Affiliation(s)
- Lawrance K Chung
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles
| | - Carlito Lagman
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles
| | - Daniel T Nagasawa
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles
| | - Quinton Gopen
- Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles
| | - Isaac Yang
- Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles
| |
Collapse
|
24
|
Beckett JS, Lagman C, Chung LK, Bui TT, Lee SJ, Voth BL, Gaonkar B, Gopen Q, Yang I. Computerized Assessment of Superior Semicircular Canal Dehiscence Size using Advanced Morphological Imaging Operators. J Neurol Surg B Skull Base 2016; 78:197-200. [PMID: 28321386 DOI: 10.1055/s-0036-1594241] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 10/10/2016] [Indexed: 10/20/2022] Open
Abstract
Superior semicircular canal dehiscence (SSCD) describes a pathological aperture at the level of the arcuate eminence. Techniques for quantifying defect size are described with most studies using two-dimensional lengths that underestimate the pathology. The objective of this study is to describe a novel method of measurement that combines manual segmentation of high-resolution computed tomography (HRCT) images of the temporal bone and a morphological skeletonization transform to calculate dehiscence volume. Images were imported into a freely available image segmentation tool: ITK-SNAP (version 3.4.0; available at: http://www.itksnap.org/) software. Coronal and sagittal planes were used to outline the dehiscence in all slices demonstrating the defect using the paintbrush tool. A morphological skeletonization transform derived a single-pixel thick representation of the original delineation. This "sheet" of voxels overlaid the dehiscence. Volume was calculated by counting the number of nonzero image voxels within this "sheet" and multiplying this number by the volume (mm3) of each voxel. A total of 70 cases of SSCD were identified. Overall, mean volume was 0.88 mm3 (standard deviation: 0.57, range: 0.11-2.27). We present a novel technique for measuring SSCD, which we believe provides a more accurate representation of the pathology, and has the potential to standardize measurement of SSCD.
Collapse
Affiliation(s)
- Joel S Beckett
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Carlito Lagman
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Lawrance K Chung
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Timothy T Bui
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Seung J Lee
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Brittany L Voth
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Bilwaj Gaonkar
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Quinton Gopen
- Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| | - Isaac Yang
- Department of Neurosurgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States; Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States
| |
Collapse
|