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Abstract
OBJECTIVE To determine the long-term, spontaneous growth arrest rates in a large cohort of vestibular schwannoma patients. METHODS This paper describes a retrospective case series of 735 vestibular schwannoma patients organised into four groups: group A patients showed tumour growth which then stopped without any treatment; group B patients showed tumour growth which continued, but were managed conservatively; group C patients had a growing vestibular schwannoma and received active treatment; and group D patients had a stable, non-growing vestibular schwannoma. Demographics, tumour size and vestibular schwannoma growth rate (mm/month) were recorded. RESULTS A total of 288 patients (39.2 per cent) had growing vestibular schwannomas. Of the patients, 103 (35.8 per cent) were managed conservatively, with 52 patients (50.5 per cent of the conservative management group, 18 per cent of the total growing vestibular schwannoma group) showing growth arrest, which occurred on average at four years following the diagnosis. Eighty-two per cent of vestibular schwannomas stopped growing within five years. Only differences between age (p = 0.016) and vestibular schwannoma size (p = 0.0008) were significant. CONCLUSION Approximately 20 per cent of growing vestibular schwannomas spontaneously stop growing, predominantly within the first five years; this is important for long-term management.
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Salem N, Galal A, Piras G, Sykopetrites V, Di Rubbo V, Talaat M, Sobhy O, Sanna M. Management of Vestibular Schwannoma with Normal Hearing. Audiol Neurootol 2023; 28:12-21. [PMID: 36228574 DOI: 10.1159/000524925] [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: 12/10/2021] [Accepted: 04/17/2022] [Indexed: 01/20/2023] Open
Abstract
INTRODUCTION This work aimed to study the management of vestibular schwannoma (VS) patients with normal hearing (NH). METHODS A retrospective study was undertaken in a Quaternary referral center for skull base pathologies. Among 4,000 VS patients 162 met our strict audiological criteria for NH. These patients were divided into 2 management groups, wait and scan (W&S) (45/162, 25%) and operated patients (123/162, 75%), and 6 patients were included in both groups. RESULTS Our management strategy achieved the goals for treatment of VS. First goal, all tumors were completely removed except for 2 intentional residuals. Second goal, facial nerve (FN) function preservation (House Brackmann I, II, and III) was 95.9%. Third goal, possible hearing preservation (HP) attempts occurred in (50/122) (40.9%) with an HP rate in 44% of the patients. Additionally, there were only 2 cases of postoperative complications with no CSF leakage. The prospect of HP in NH patients did not differ with respect to tumor size. However, patients with normal preoperative ABR seemed to have better chances of HP and good FN function and vice versa. HP rate was superior for the MCFA as opposed to the RS + RLA. W&S group demonstrated hearing stability in 88.9% of the patients and FN function stability of HB I in 100% of the patients. CONCLUSIONS Surgical resection is a reasonable and definitive management option for VS with NH. Nevertheless, choosing to manage cases with observation remains an appropriate management option for NH patients. ABR might be considered as an adjuvant tool indicating better prognosis for HP.
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Affiliation(s)
- Nervana Salem
- Department of Neurotology and Skull Base Surgery, Gruppo Otologico, Piacenza/Rome, Italy.,Department of Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Ahmed Galal
- Department of Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Gianluca Piras
- Department of Neurotology and Skull Base Surgery, Gruppo Otologico, Piacenza/Rome, Italy
| | - Vittoria Sykopetrites
- Department of Neurotology and Skull Base Surgery, Gruppo Otologico, Piacenza/Rome, Italy
| | - Vittoria Di Rubbo
- Department of Neurotology and Skull Base Surgery, Gruppo Otologico, Piacenza/Rome, Italy
| | - Mohamed Talaat
- Department of Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Ossama Sobhy
- Department of Otorhinolaryngology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Mario Sanna
- Department of Neurotology and Skull Base Surgery, Gruppo Otologico, Piacenza/Rome, Italy
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Wait and Scan Management of Intra-canalicular Vestibular Schwannomas: Analysis of Growth and Hearing Outcome. Otol Neurotol 2022; 43:676-684. [PMID: 35761461 DOI: 10.1097/mao.0000000000003562] [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 report on the results of intracanalicular vestibular schwannomas (ICVS) that were managed by wait and scan and to analyze the possible predictors of tumor growth and hearing deterioration throughout the observation period. STUDY DESIGN A retrospective case series. SETTING Quaternary referral center for skull base pathologies. PATIENTS Patients with sporadic ICVS managed by wait and scan. INTERVENTION Serial resonance imaging (MRI) with size measurement and serial audiological evaluation. MAIN OUTCOME MEASURE Tumor growth defined as 2 mm increase of maximal tumor diameter, further treatment, and hearing preservation either maintain initial modified Sanna hearing class, or maintain initial serviceable hearing (class A/B). RESULTS 339 patients were enrolled. The mean follow-up was 36.5±31.7 months with a median of 24 months. Tumor growth occurred in 141 patients (40.6%) either as slow growth (SG) in 26.3% of cases or fast growth (FG) in 15.3% of cases. Intervention was performed in only 64 cases (18.8%). Out of 271 patients who underwent hearing analysis, 86 patients (33.5%) showed hearing deterioration to a lower hearing class of the modified Sanna classification. Tumor growth and older age were predictors of hearing deterioration. Of the 125 cases with initial serviceable hearing (Class A/B), 91 cases (72.8%) maintained serviceable hearing at last follow-up. Tumor growth and a worse initial pure tone average (PTA) were predictors of hearing deterioration. CONCLUSIONS Wait and scan management of ICVS is a viable option and only 18.8% of patients needed further treatment. Hearing tends to deteriorate over time.
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A 2 and 5-Year Longitudinal Analysis of 671 Consecutive Patients Diagnosed with Unilateral Vestibular Schwannoma. Otol Neurotol 2022; 43:702-708. [PMID: 35709433 DOI: 10.1097/mao.0000000000003536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To analyse the 2 and 5-year outcomes of a cohort of patients with newly diagnosed vestibular schwannoma patients. STUDY DESIGN Longitudinal cohort study. SETTING Tertiary skull base referral unit. PATIENTS Six hundred and seventy-one consecutive patients referred to the Cambridge Skull Base Unit between 2005 and 2010. MAIN OUTCOME MEASURES 1) Treatment outcomes, 2) hearing preservation, 3) facial nerve function, and 4) gross tumor control. RESULTS At initial diagnosis, 440/671(65.6%) of patients entered a watch, wait and rescan (WWR) pathway, 208/671 (31%) underwent primary microsurgical excision and 23/671 (3.4%) primary radiotherapy. Of patients who entered WWR, 144/440 (32.7%) exhibited tumor growth necessitating secondary intervention at a mean of 22.7 months; 67.4% had radiotherapy and 32.6% surgery. Radiotherapy was successful at achieving tumor control in 95% of cases. Primary surgery via the translabyrinthine route was performed in the majority of cases allowing for a radiologically clear surgical resection in 93% of cases. CONCLUSION The Cambridge philosophy of treating the newly diagnosed vestibular schwannoma aims at preserving functional status where possible. In patients with small tumors it is recommended that they are placed on to a WWR pathway, of which 67.3% will not exhibit any growth by 5 years. If small tumors grow more than 2 mm by serial scanning, radiotherapy offers a high rate of tumor control. In patients with larger tumors more than 20 mm we would advocate microsurgical excision by the translabyrinthine route which offers excellent functional outcomes and gross tumor control.
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Abstract
OBJECTIVE To characterize the natural history of hearing loss for patients presenting with serviceable hearing (SH) who undergo a wait-and-scan approach for sporadic vestibular schwannoma (VS) using aggregate time-to-event survival analysis. STUDY DESIGN Systematic review. SETTING Published international English literature, January 1, 2000 to May 31, 2020. PATIENTS Patients with sporadic VS entering a wait-and-scan approach with SH at diagnosis. INTERVENTIONS Observation with serial MRI and audiometry. RESULTS In total, 3,652 patients from 26 studies were included for analysis. Mean age at diagnosis was 58.8 years (SD, 4.1). Mean follow-up was 49.2 months (SD, 26.5). In total, 755 patients (21%) failed conservative treatment and underwent radiosurgery or microsurgery at the time of last follow-up. The average loss to follow-up was 6.9% (SD, 11.1). A total of 1,674 patients had SH at the time of diagnosis. Survival rates for maintaining SH were 96% at 1 year, 77% at 3 years, 62% at 5 years, and 42% at 10 years following diagnosis. CONCLUSION In this systematic review, aggregate data from 3,652 patients across 26 studies show consistent patterns in progression of hearing loss during observation for patients with sporadic VS as a function of time. As an easy-toremember conservative benchmark for those presenting with SH at diagnosis: approximately 75% retain SH at 3 years, 60% at 5 years, and 40% at 10 years.
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Nasrollahi TS, Shahrestani S, Borrelli M, Raskin J, Hopp ML, Wu AW, Miller ME, Wong YT. Analysis of readmissions data among frail and non-frail patients presenting for acoustic neuroma. J Clin Neurosci 2022; 99:82-88. [PMID: 35278933 DOI: 10.1016/j.jocn.2022.03.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/22/2022] [Accepted: 03/07/2022] [Indexed: 10/18/2022]
Abstract
The incidence of acoustic neuromas in the United States is 1.09 per 100,000 with 23,739 newly diagnosed cases in the years 2004 to 2010. Because the recent literature has supported that frailty can serve as a more accurate predictor of patient outcomes when evaluated with age, and is an important variable to consider in the course of patient treatment. The objective of this study was to compare the outcomes of frail patients who had undergone surgery for acoustic neuroma with their non-frail counterparts.The authors conducted a retrospective cohort study of geriatric patients receiving cranial neurosurgery for acoustic neuroma between 2016 and 2017 by using the Nationwide Readmission Database. A total of 396 frail patients and 402 non-frail patients were identified through the database of undergoing surgery for acoustic neuroma. Frail patients had statistically higher rates of readmission (p < 0.01), post-operative infection (p < 0.01), facial paralysis (p < 0.01), urinary tract infection (p < 0.01), hydrocephalus (p < 0.01), and dysphagia (p < 0.01). These post-op morbidities likely led to the increased length of stay (p < 0.01), non-routine discharge (p < 0.01), and all payer cost seen in frail patients (p < 0.01). However, no significant difference was found between frail and non-frail patients with regards to CSF leak, post hemorrhagic anemia, myocardial infarction, and mortality. Patient frailty status is a significant predictor of poor outcomes in the postoperative sequelae of acoustic neuroma surgery. Further, models including patient frailty plus age outperformed those using age alone for prediction of several postoperative complications.
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Affiliation(s)
- Tasha S Nasrollahi
- Cedars-Sinai Division of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
| | - Shane Shahrestani
- Department of Neurosurgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.
| | - Michela Borrelli
- Cedars-Sinai Division of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
| | - Jonathan Raskin
- Cedars-Sinai Division of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
| | - Martin L Hopp
- Cedars-Sinai Division of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
| | - Arthur W Wu
- Cedars-Sinai Division of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
| | - Mia E Miller
- Cedars-Sinai Division of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
| | - Yu-Tung Wong
- Cedars-Sinai Division of Otolaryngology, Cedars-Sinai Medical Center, Los Angeles, CA, United States.
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Conlan O, Kontorinis G. Long-term growth patterns of vestibular schwannomas after stereotactic radiotherapy: delayed re-growth. Eur Arch Otorhinolaryngol 2022; 279:4825-4830. [PMID: 35129632 PMCID: PMC9474560 DOI: 10.1007/s00405-022-07281-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 01/21/2022] [Indexed: 11/26/2022]
Abstract
Purpose To determine the long-term outcomes of patients with vestibular schwannomas (VS) after stereotactic radiosurgery (SRS) who experience delayed tumour regrowth. Methods We carried out a retrospective case series in tertiary university settings. We included patients with VS with initial response to SRS and delayed regrowth, assessing a database of 735 patients with VS and 159 patients who had SRS as sole treatment. Following SRS, all patients had clinical follow-up and serial magnetic resonance imaging (MRI). We documented the post-SRS clinical assessment, pre- and post-SRS VS size as per MRI in predetermined time periods, response to treatment and rate of (re-) growth and the final outcome in each case. Results We identified six patients with good initial response but delayed VS regrowth at a faster rate than pre-SRS. The mean growth rate for these VS was 0.347 mm/month (range 0.04–0.78 mm/month) prior to treatment; the mean growth rate at the time of delayed re-growth was 0.48 mm/month (range 0.17–0.75 mm/month); this did not reach the level of statistical significance (p = 0.08). This regrowth occurred at a mean time of 42 months (range 36–66 months) post-SRS and stopped 22 months (mean, range 12–36 months) post regrowth detection in all cases. Conclusions Given that delayed post-SRS VS regrowth can occur in approximately 4% of the treated cases, it is important to continue close clinical and radiological follow-up. Despite this abnormal behaviour, VS do stop growing again; still, patients should be made aware of the possibility of this uncommon VS behaviour following SRS.
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Affiliation(s)
- Owen Conlan
- School of Medicine, University of Glasgow, Glasgow, UK
| | - Georgios Kontorinis
- School of Medicine, University of Glasgow, Glasgow, UK.
- Department of Otolaryngology-Head and Neck Surgery, Queen Elizabeth University Hospital, 1345 Govan Road, Glasgow, G51 4TF, UK.
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Sergi B, Balducci M, Paludetti G, Olivi A, Picciotti PM, De Corso E, Passali GC, Fetoni AR, Lucidi D. Decision Making on Vestibular Schwannoma: Lessons from a Multidisciplinary Board. World Neurosurg 2021; 157:e506-e513. [PMID: 34710576 DOI: 10.1016/j.wneu.2021.10.140] [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] [Received: 09/22/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Management of vestibular schwannoma (VS) is a complex process aimed at identifying a clinical indication for fractionated stereotactic radiotherapy (sRT) or radiosurgery, microsurgical resection, or wait and scan (WS). We describe the experience of our VS multidisciplinary team (MDT) at a tertiary university referral center created for diagnosis, treatment, and follow-up of VS patients. METHODS We conducted a retrospective study on 132 consecutive patients referred to the MDT and managed by observation (WS), microsurgery, or fractionated sRT. The analysis included patient age, tumor size, hearing level, facial nerve function, tumor control, complications, and quality of life questionnaires. RESULTS Among the patients, 21% were subjected to microsurgery, 10% to sRT, and 69% to WS. The median follow-up time was 30 months. Outcomes based on different management modalities are described. Statistically significant differences among groups were detected in terms of quality of life (physical domain). CONCLUSIONS MDT may provide the best individualized therapy for VS patients compared with a single gold-standard strategy.
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Affiliation(s)
- Bruno Sergi
- Head & Neck Department, Università Cattolica del Sacro Cuore, Rome, Italy; Otorhinolaryngology and Head & Neck Surgery Unit, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy
| | - Mario Balducci
- Department of Radiotherapy, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy
| | - Gaetano Paludetti
- Head & Neck Department, Università Cattolica del Sacro Cuore, Rome, Italy; Otorhinolaryngology and Head & Neck Surgery Unit, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy
| | - Alessandro Olivi
- Department of Neurosurgery, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy
| | - Pasqualina Maria Picciotti
- Head & Neck Department, Università Cattolica del Sacro Cuore, Rome, Italy; Otorhinolaryngology and Head & Neck Surgery Unit, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy.
| | - Eugenio De Corso
- Otorhinolaryngology and Head & Neck Surgery Unit, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy
| | - Giulio Cesare Passali
- Head & Neck Department, Università Cattolica del Sacro Cuore, Rome, Italy; Otorhinolaryngology and Head & Neck Surgery Unit, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy
| | - Anna Rita Fetoni
- Head & Neck Department, Università Cattolica del Sacro Cuore, Rome, Italy; Otorhinolaryngology and Head & Neck Surgery Unit, Fondazione Policlinico Universitario "A. Gemelli"-IRCCS, Rome, Italy
| | - Daniela Lucidi
- Department of Otolaryngology-Head and Neck Surgery, University Hospital of Modena, Modena, Italy
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Tawfik KO, McDonald M, Ren Y, Moshtaghi O, Schwartz MS, Friedman RA. Cochlear T2 Signal May Predict Hearing Outcomes After Resection of Acoustic Neuroma. Otol Neurotol 2021; 42:1399-1407. [PMID: 34121085 DOI: 10.1097/mao.0000000000003228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Examine the impact of preoperative cochlear Fast Imaging Employing Steady-state Acquisition (FIESTA) and Constructive Interference in Steady State (CISS) signal intensity on hearing outcomes after middle cranial fossa (MCF) resection of acoustic neuroma (AN). METHODS Adult patients (≥18 years) who underwent MCF AN resection for hearing preservation (HP) between November 2017 and September 2019 were retrospectively reviewed. All patients had preoperative word recognition score (WRS) ≥50%. HP was defined as postoperative WRS ≥50%. A neuroradiologist blinded to patients' clinical and audiometric outcomes reviewed patients' preoperative magnetic resonance images. Ipsilateral-to-contralateral cochlear FIESTA/CISS signal intensity ratios were determined using hand-drawn regions of interest focused on the cochlear fluid. Preoperative and postoperative pure tone average (PTA) and WRS were reviewed. RESULTS Fifty-one patients were reviewed (60.8% female). Mean age was 47 years and mean tumor size 9.2 mm (±3.8). Hearing was preserved in 56.9% (n = 29). FIESTA/CISS signal ratios did not significantly differ between patients with and without HP. Lower FIESTA/CISS signal ratios correlated with greater declines in hearing (r = 0.322, p = 0.011 for PTA; and r = 0.384, p = 0.004 for WRS). On multivariate analysis accounting for tumor size and preoperative PTA/WRS, decreases in FIESTA/CISS signal ratios independently predicted greater declines in hearing by PTA (b = -100.9, p = 0.012) and WRS (b = 76.208), although the latter result was not statistically significant (p = 0.078). CONCLUSIONS Cochlear FIESTA/CISS signal intensity may be a predictor of postoperative hearing loss after MCF AN resection. In this cohort, degraded preoperative cochlear FIESTA/CISS signal strongly predicted postoperative hearing loss.Level of Evidence: IV.
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Affiliation(s)
| | - Marin McDonald
- University of California San Diego School of Medicine, La Jolla, California
| | - Yin Ren
- University of California San Diego School of Medicine, La Jolla, California
| | - Omid Moshtaghi
- University of California San Diego School of Medicine, La Jolla, California
| | - Marc S Schwartz
- University of California San Diego School of Medicine, La Jolla, California
| | - Rick A Friedman
- University of California San Diego School of Medicine, La Jolla, California
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Gan J, Zhang Y, Wu J, Lei D, Zhang F, Zhao H, Wang L. Current Understanding of Hearing Loss in Sporadic Vestibular Schwannomas: A Systematic Review. Front Oncol 2021; 11:687201. [PMID: 34476211 PMCID: PMC8406761 DOI: 10.3389/fonc.2021.687201] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 07/21/2021] [Indexed: 11/13/2022] Open
Abstract
Objective Hearing loss is the most common initial symptom in patients with sporadic vestibular schwannomas (SVS). Hearing preservation is an important goal of both conservative and surgical therapy. However, the mechanism of SVS-associated hearing loss remains unclear. Thus, we performed this systematic review to summarize the current understanding of hearing loss in the SVS and distill a testable hypothesis to further illuminate its underlying mechanism. Methods A systematic review querying four databases (PubMed, Medline, Embase, and Web of Science) was performed to identify studies evaluating hearing loss in patients with SVS and exploring the potential mechanisms of hearing impairment. Results A total of 50 articles were eligible and included in this review. After analysis, the retrieved studies could be categorized into four types: (1) 29 studies explore the relationship between hearing loss and the growth pattern of the tumor (e.g., tumor size/volume, growth rate, tumor location, etc.); (2) ten studies investigate the potential role of cochlear dysfunction in hearing deterioration, including structural abnormality, protein elevation in perilymph, and cochlear malfunctioning; (3) two studies looked into SVS-induced impairment of auditory pathway and cortex; (4) in the rest nine studies, researchers explored the molecular mechanism underlying hearing loss in SVS, which involves molecular and genetic alterations, inflammatory response, growth factors, and other tumor-associated secretions. Conclusions Multiple factors may contribute to the hearing impairment in SVS, including the growth pattern of tumor, cochlear dysfunction, impairment of auditory pathway and cortex, genetic and molecular changes. However, our current understanding is still limited, and future studies are needed to explore this multifactorial hypothesis and dig deeper into its underlying mechanism.
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Affiliation(s)
- Jinlu Gan
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanling Zhang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingnan Wu
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Deqiang Lei
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fangcheng Zhang
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongyang Zhao
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lei Wang
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Abstract
BACKGROUND Vestibular schwannomas exhibit a uniquely variable natural history of growth, stability, or even spontaneous regression. We hypothesized that a transitory population of immune cells, or immunomodulation of tumors cells, may influence the growth pattern of schwannomas. We therefore sought to characterize the impact of the immune microenvironment on schwannoma behavior. METHODS Forty-eight vestibular schwannomas with preoperative magnetic resonance imaging and 11 with serial imaging were evaluated for presence of immune infiltrates (including the pan-leukocyte marker Cluster of Differentiation (CD)45, CD4 and CD8 T-cell, and CD68 and CD163 macrophages) as well as expression of immunomodulatory regulators (Programmed Death Ligand 1 (PD-L1), Programmed Death Ligand 2 (PD-L2), LAG-3, TIM-3, V-domain Ig Suppressor of T cell Activation). Maximal diameter, volume, and recurrence were annotated. RESULTS Vestibular schwannomas were characterized by diverse signatures of tumor infiltrating leukocytes and immunomodulatory markers. The median tumor volume was 4.7 cm (Interquartile Range (IQR) 1.0-13.0) and maximum diameter was 2.3 cm (IQR 1.5-3.2). Among tumors with serial imaging, the median volumetric growth was 0.04 cm/mo (IQR 0.01-0.18). Tumor volume and maximum diameter demonstrated strong concordance (R = 0.90; p < 0.001). Vestibular schwannoma volume was positively associated with CD4, CD68, and CD163, but not CD8, immune infiltration (all p < 0.05). Tumor growth was positively associated with CD163 and PD-L1 (both p < 0.05). Further, CD163 modified this effect: the relationship between PD-L1 and growth strengthened with increasing CD163 infiltration (R = 0.81, p = 0.007). No other immune cell types modified this relationship. These associations were inconsistently observed for maximum diameter and linear growth. CONCLUSION Vestibular schwannomas demonstrate variable expression of immune regulatory markers as well as immune infiltrates. Tumor size is associated with immune infiltrates and tumor growth is associated with PD-L1, especially in the presence of M2-subtype macrophages. Volumetric measures may associate with the biological signature more accurately than linear parameters. Future exploration of the role of immune modulation in select schwannomas will further enhance our understanding of the biology of these tumors and suggest potential therapeutic avenues for control of tumor growth.
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Imaging Post Stereotactic Radiosurgery for Vestibular Schwannomas-When Should We Scan? Otol Neurotol 2021; 42:e216-e221. [PMID: 33252368 DOI: 10.1097/mao.0000000000002910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To identify the optimal time for imaging following stereotactic radiosurgery (SRS) in patients with vestibular schwannomas (VS). STUDY DESIGN Retrospective case series. SETTING Tertiary, university center. PATIENTS Patients with VS treated with SRS. INTERVENTIONS Pre- and post-SRS surveillance with magnetic resonance imaging (MRI); patients should have at least two pre- and two post-SRS scans available to be included. MAIN OUTCOME MEASURES Patient demographics, tumor size, and growth per month ratio pre- and post-SRS and time interval between serial MRI. RESULTS Forty-two patients fulfilled the inclusion criteria. The average tumor size before the treatment was 16.9 mm (range, 10-28 mm) while 2 years posttreatment it was 16 mm (range, 7-25 mm) (p = 0.5). Average time of the first MRI post-SRS was 11 months (range, 5-14) with an average change in tumor size at that time of +0.53 mm (range, -5-8). Average time to second MRI was 22.3 months (range, 12-33) with an average change in tumor size at second scan of -1.14 (range, -5-2) mm (p = 0.117). The average growth/mo ratio before SRS was 0.26 mm/mo (range, 0-1), while post-SRS 0.05 mm/mo (range, -0.3-0.5) and -0.16 mm/mo (range, -18-0.25) at the time of the first and second scan, respectively (p < 0.001). CONCLUSIONS Given the initial increase in size following SRS, unless clinically indicated, MRI post-SRS at less than 1 year has no clinical value. The growth per month ratio provides more meaningful values for response to treatment than tumor size measurements.
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A Novel Imaging Grading Biomarker for Predicting Hearing Loss in Acoustic Neuromas. Clin Neuroradiol 2020; 31:599-610. [PMID: 32720068 DOI: 10.1007/s00062-020-00938-7] [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] [Received: 05/05/2020] [Accepted: 07/06/2020] [Indexed: 01/12/2023]
Abstract
PURPOSE The aim of this study was to investigate an imaging biomarker based on contrast enhanced T1-weighted and T2-weighted magnetic resonance imaging (MRI) to determine the hearing loss related to acoustic neuromas (AN). METHODS In this retrospective study, 441 acoustic neuromas treated with microsurgery were included. The diagnostic and follow-up MRI and audiometry of these patients were compared. RESULTS We discovered a new MRI grading biomarker based on the percentage of tumor filling the inner auditory canal (TFIAC classification). The area under the receiver operating characteristics (AUROC) curve was highest for TFIAC (0.675), followed by period of observation (0.615) and tumor size (0.6) (P < 0.001). The percentage of patients in TFIAC grade III (90.1%) experiencing hypoacusis prior to microsurgery was significantly higher than that in TFIAC grade I (72.7%, P = 0.037) and TFIAC grade IV patients had a higher rate of non-serviceable hearing compared to TFIAC grade III patients (P < 0.001). During the follow-up, TFIAC grade IV patients experienced a significantly higher rate of non-serviceable hearing than TFIAC grade III patients in all ANs (P < 0.001) and in serviceable hearing acoustic neuroma cases prior to surgery (TFIAC grade IV 55.4%, TFIAC grade III 69.0%, P = 0.045). The TFIAC grade IV patients experienced a significantly higher rate of facial nerve dysfunction than TFIAC grade III patients after surgery (grade IV 48.0%, grade III 26.1%, P < 0.001). CONCLUSION The TFIAC classification serves as a potential imaging biomarker for preoperative and postoperative hearing prediction in ANs, which may aid neurosurgeons in predicting hearing loss and selecting optimal surgical strategies.
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Katsumi S, Sahin MI, Lewis RM, Iyer JS, Landegger LD, Stankovic KM. Intracochlear Perfusion of Tumor Necrosis Factor-Alpha Induces Sensorineural Hearing Loss and Synaptic Degeneration in Guinea Pigs. Front Neurol 2020; 10:1353. [PMID: 32116980 PMCID: PMC7025643 DOI: 10.3389/fneur.2019.01353] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 12/09/2019] [Indexed: 12/15/2022] Open
Abstract
Tumor necrosis factor-alpha (TNF-α) is a proinflammatory cytokine that plays a prominent role in the nervous system, mediating a range of physiologic and pathologic functions. In the auditory system, elevated levels of TNF-α have been implicated in several types of sensorineural hearing loss, including sensorineural hearing loss induced by vestibular schwannoma, a potentially fatal intracranial tumor that originates from the eighth cranial nerve; however, the mechanisms underlying the tumor's deleterious effects on hearing are not well-understood. Here, we investigated the effect of acute elevations of TNF-α in the inner ear on cochlear function and morphology by perfusing the cochlea with TNF-α in vivo in guinea pigs. TNF-α perfusion did not significantly change thresholds for compound action potential (CAP) responses, which reflect cochlear nerve activity, or distortion product otoacoustic emissions, which reflect outer hair cell integrity. However, intracochlear TNF-α perfusion reduced CAP amplitudes and increased the number of inner hair cell synapses without paired post-synaptic terminals, suggesting a pattern of synaptic degeneration that resembles that observed in primary cochlear neuropathy. Additionally, etanercept, a TNF-α blocker, protected against TNF-α-induced synaptopathy when administered systemically prior to intracochlear TNF-α perfusion. Findings motivate further investigation into the harmful effects of chronically elevated intracochlear levels of TNF-α, and the potential for etanercept to counter these effects.
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Affiliation(s)
- Sachiyo Katsumi
- Eaton Peabody Laboratories, Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States.,Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, United States
| | - Mehmet I Sahin
- Eaton Peabody Laboratories, Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States.,Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, United States
| | - Rebecca M Lewis
- Eaton Peabody Laboratories, Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States.,Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, United States
| | - Janani S Iyer
- Eaton Peabody Laboratories, Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States.,Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, United States.,Program in Speech and Hearing Bioscience and Technology, Harvard Medical School, Boston, MA, United States
| | - Lukas D Landegger
- Eaton Peabody Laboratories, Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States.,Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, United States
| | - Konstantina M Stankovic
- Eaton Peabody Laboratories, Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA, United States.,Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, MA, United States.,Program in Speech and Hearing Bioscience and Technology, Harvard Medical School, Boston, MA, United States.,Harvard Program in Therapeutic Science, Harvard Medical School, Boston, MA, United States
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15
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Ruiz-Garcia H, Peterson J, Leon J, Malouff T, Vallow L, Lundy L, Chaichana KL, Vibhute P, Trifiletti DM. Initial Observation among Patients with Vestibular Schwannoma. J Neurol Surg B Skull Base 2020; 82:e15-e21. [PMID: 34306913 DOI: 10.1055/s-0040-1701222] [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: 05/02/2019] [Accepted: 12/02/2019] [Indexed: 10/25/2022] Open
Abstract
Introduction Vestibular schwannomas (VS) are slow growing tumors. Although there are a wide variety of available treatment options, these tumors are often initially observed. We aimed to establish the presenting symptoms and outcomes of patients treated with initial observation at our institution. Methods The medical records of patients with radiographically diagnosed VS were reviewed from 1989 to 2018. Actuarial estimates of radiographic tumor control and freedom of local therapy were calculated and compared using Cox regression analyses. Results A total of 360 patients were diagnosed with VS at our institution from 1989 through 2018 with a median age of 59.9 years. After radiographic diagnosis, 243 patients (67.5%) opted for initial observation. Local control at 1, 5, and 10 years was 91, 67, and 58%, respectively. On multivariable analysis, factors associated with shorter time to radiographic tumor progression included younger patient age ( p = 0.016) and tumors with an extracanalicular component ( p = 0.032). Regarding time until definitive treatment only larger baseline American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) tumor size predicted for earlier initiation of therapy ( p < 0.001), although this was restricted to tumors with an extracanalicular component ( p = 0.004), as opposed to purely internal auditory canal tumors ( p = 0.839). Conclusion Many patients who were initially observed continued to have satisfactory local control rates at 10 years. In patients with extracanalicular tumors, larger AAO-HNS tumor measurements were associated with earlier radiographic tumor progression and shorter time to local therapy, with 7 mm serving as a potential threshold value for extracanalicular tumors. Younger patients and tumors with primarily an extracanalicular portion may warrant closer observation.
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Affiliation(s)
- Henry Ruiz-Garcia
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, United States
| | - Jennifer Peterson
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, United States.,Department of Neurological Surgery, Mayo Clinic, Jacksonville, Florida, United States
| | - Janet Leon
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, United States
| | - Timothy Malouff
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, United States
| | - Laura Vallow
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, United States
| | - Larry Lundy
- Department of Otolaryngology, Mayo Clinic, Jacksonville, Florida, United States
| | - Kaisorn L Chaichana
- Department of Neurological Surgery, Mayo Clinic, Jacksonville, Florida, United States
| | - Prasanna Vibhute
- Department of Radiology, Mayo Clinic, Jacksonville, Florida, United States
| | - Daniel M Trifiletti
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, United States.,Department of Neurological Surgery, Mayo Clinic, Jacksonville, Florida, United States
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16
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Somers T, Kania R, Waterval J, Van Havenbergh T. What is the Required Frequency of MRI Scanning in the Wait and Scan Management? J Int Adv Otol 2019; 14:85-89. [PMID: 29764780 DOI: 10.5152/iao.2018.5348] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The wait and scan policy is being increasingly used as the first measure after the diagnosis of a vestibular schwannoma (VS) using magnetic resonance imaging (MRI). As part of the European Academy of Otology and Neuro-Otology (EAONO) position statement on VS, the frequency of imaging has been studied in the literature. Among 163 studies, 29 fulfilled the inclusion criteria and were scored using the Grading of Recommendations, Assessment, Development, and Evaluation system. Because tumor growth rate during the first 5 years of follow-up is predictive of further growth during the upcoming years, a protocol for wait and scan is useful for centers dealing with this condition. The EAONO proposal is that after the initial diagnosis by MRI, a first new MRI would take place after 6 months, annually for 5 years, and then every other year for 4 years, followed by a lifelong MRI follow-up every 5 years. The first early MRI is to screen for fast-growing tumors, and the lifelong follow-up with tapered intervals is to detect late repeated growth.
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Affiliation(s)
| | - Romain Kania
- Department of ENT, Hôpital Lariboisière, Université de Paris, France
| | - Jerome Waterval
- Department of ENT, Radboud Ziekenhuis, University of Nijmegen, Netherlands
| | - Tony Van Havenbergh
- Department of Neurosurgery, Sint-Augustinus Ziekenhuis, Wilrijk, Antwerp, Belgium
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17
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Delayed Tumor Growth in Vestibular Schwannoma: An Argument for Lifelong Surveillance. Otol Neurotol 2019; 40:1224-1229. [DOI: 10.1097/mao.0000000000002337] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Santa Maria PL, Shi Y, Gurgel RK, Corrales CE, Soltys SG, Santa Maria C, Murray K, Chang SD, Blevins NH, Gibbs IC, Jackler RK. Long-Term Hearing Outcomes Following Stereotactic Radiosurgery in Vestibular Schwannoma Patients-A Retrospective Cohort Study. Neurosurgery 2019; 85:550-559. [PMID: 30247723 PMCID: PMC7137466 DOI: 10.1093/neuros/nyy407] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 08/01/2018] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND An understanding of the hearing outcomes is needed for treatment counseling for patients with vestibular schwannomas (VS). OBJECTIVE To determine long-term hearing results following stereotactic radiosurgery (SRS) for VS and identify any influential variables. METHODS Tertiary hospital retrospective cohort. RESULTS There were 579 tumors (576 patients) treated with SRS. Eighty-two percent (473) of tumors had ≥1 yr and 59% (344 ≥3 yr follow-up. In the 244 tumor ears, with measurable hearing before SRS who were followed ≥1 yr, 14% (31) had improved hearing, 13% (29) unchanged hearing, and 74% (158) had worsened hearing. In 175 patients with ≥3 yr follow-up and who had measurable hearing pretreatment, 6% (11 ears) improved hearing, 31% (54 ears) unchanged hearing, and 63% (110 ears) had worsened hearing. Patients with tumors with larger target volumes (P = .040) and with neurofibromatosis type 2 (NF2; P = .017) were associated with poorer hearing (P = .040). Patients with word recognition scores (WRS) of 50% or poorer had tumors with a larger volume (P = .0002), larger linear size (P = .032), and NF2 (P = .045). Traditionally reported hearing outcomes using the Gardner Robertson maintenance of PTA ≤50 db or WRS ≥50% were 48% at 3 yr, which overestimates hearing outcomes compared to the above reporting standards. CONCLUSION Hearing declines over time in VS treated with SRS in a high proportion of cases. The frequency and magnitude of long-term hearing decline following SRS argues against prophylactic radiation for small tumors in hearing ears with undetermined growth behavior.
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Affiliation(s)
- Peter L Santa Maria
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
- Department of Ear Sciences, The University of Western Australia, Nedlands, Australia
- Ear Science Institute Australia, Subiaco, Australia
| | - Yangyang Shi
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
| | - Richard K Gurgel
- Department of Otolaryngology, Head and Neck Surgery, University of Utah, Salt Lake City, Utah
| | - C Eduardo Corrales
- Division of Otolaryngology—Head and Neck Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Scott G Soltys
- Department of Radiation Oncology, Stanford University, Palo Alto, California
| | - Chloe Santa Maria
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
- Department of Ear Sciences, The University of Western Australia, Nedlands, Australia
- Ear Science Institute Australia, Subiaco, Australia
| | - Kevin Murray
- School of Population and Global Health, The University of Western Australia, Nedlands, Australia
| | - Steven D Chang
- Department of Neurosurgery, Stanford University, Stanford, California
| | - Nikolas H Blevins
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
- Department of Neurosurgery, Stanford University, Stanford, California
| | - Iris C Gibbs
- Department of Radiation Oncology, Stanford University, Palo Alto, California
| | - Robert K Jackler
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
- Department of Neurosurgery, Stanford University, Stanford, California
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19
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Yanagihara TK, Wang TJC. Commentary: Long-Term Hearing Outcomes Following Stereotactic Radiosurgery in Vestibular Schwannoma Patients-A Retrospective Cohort Study. Neurosurgery 2019; 85:E660-E661. [PMID: 30307519 DOI: 10.1093/neuros/nyy446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 08/17/2018] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ted K Yanagihara
- Department of Radiation Oncology, Weill Cornell Medical College, New York, New York
| | - Tony J C Wang
- Department of Radiation Oncology, Columbia University Medical Center, New York, New York
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20
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Carlson ML, Vivas EX, McCracken DJ, Sweeney AD, Neff BA, Shepard NT, Olson JJ. Congress of Neurological Surgeons Systematic Review and Evidence-Based Guidelines on Hearing Preservation Outcomes in Patients With Sporadic Vestibular Schwannomas. Neurosurgery 2019; 82:E35-E39. [PMID: 29309683 DOI: 10.1093/neuros/nyx511] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 10/02/2017] [Indexed: 11/14/2022] Open
Abstract
Question 1 What is the overall probability of maintaining serviceable hearing following stereotactic radiosurgery utilizing modern dose planning, at 2, 5, and 10 yr following treatment? Recommendation Level 3: Individuals who meet these criteria and are considering stereotactic radiosurgery should be counseled that there is moderately high probability (>50%-75%) of hearing preservation at 2 yr, moderately high probability (>50%-75%) of hearing preservation at 5 yr, and moderately low probability (>25%-50%) of hearing preservation at 10 yr. Question 2 Among patients with AAO-HNS (American Academy of Otolaryngology-Head and Neck Surgery hearing classification) class A or GR (Gardner-Robertson hearing classification) grade I hearing at baseline, what is the overall probability of maintaining serviceable hearing following stereotactic radiosurgery, utilizing modern dose planning, at 2, 5, and 10 yr following treatment? Recommendation Level 3: Individuals who meet these criteria and are considering stereotactic radiosurgery should be counseled that there is a high probability (>75%-100%) of hearing preservation at 2 yr, moderately high probability (>50%-75%) of hearing preservation at 5 yr, and moderately low probability (>25%-50%) of hearing preservation at 10 yr. Question 3 What patient- and tumor-related factors influence progression to nonserviceable hearing following stereotactic radiosurgery using ≤13 Gy to the tumor margin? Recommendation Level 3: Individuals who meet these criteria and are considering stereotactic radiosurgery should be counseled regarding the probability of successful hearing preservation based on the following prognostic data: the most consistent prognostic features associated with maintenance of serviceable hearing are good preoperative word recognition and/or pure tone thresholds with variable cut-points reported, smaller tumor size, marginal tumor dose ≤12 Gy, and cochlear dose ≤4 Gy. Age and sex are not strong predictors of hearing preservation outcome. Question 4 What is the overall probability of maintaining serviceable hearing following microsurgical resection of small to medium-sized sporadic vestibular schwannomas early after surgery, at 2, 5, and 10 yr following treatment? Recommendation Level 3: Individuals who meet these criteria and are considering microsurgical resection should be counseled that there is a moderately low probability (>25%-50%) of hearing preservation immediately following surgery, moderately low probability (>25%-50%) of hearing preservation at 2 yr, moderately low probability (>25%-50%) of hearing preservation at 5 yr, and moderately low probability (>25%-50%) of hearing preservation at 10 yr. Question 5 Among patients with AAO-HNS class A or GR grade I hearing at baseline, what is the overall probability of maintaining serviceable hearing following microsurgical resection of small to medium-sized sporadic vestibular schwannomas early after surgery, at 2, 5, and 10 yr following treatment? Recommendation Level 3: Individuals who meet these criteria and are considering microsurgical resection should be counseled that there is a moderately high probability (>50%-75%) of hearing preservation immediately following surgery, moderately high probability (>50%-75%) of hearing preservation at 2 yr, moderately high probability (>50%-75%) of hearing preservation at 5 yr, and moderately low probability (>25%-50%) of hearing preservation at 10 yr. Question 6 What patient- and tumor-related factors influence progression to nonserviceable hearing following microsurgical resection of small to medium-sized sporadic vestibular schwannomas? Recommendation Level 3: Individuals who meet these criteria and are considering microsurgical resection should be counseled regarding the probability of successful hearing preservation based on the following prognostic data: the most consistent prognostic features associated with maintenance of serviceable hearing are good preoperative word recognition and/or pure tone thresholds with variable cut-points reported, smaller tumor size commonly less than 1 cm, and presence of a distal internal auditory canal cerebrospinal fluid fundal cap. Age and sex are not strong predictors of hearing preservation outcome. Question 7 What is the overall probability of maintaining serviceable hearing with conservative observation of vestibular schwannomas at 2, 5, and 10 yr following diagnosis? Recommendation Level 3: Individuals who meet these criteria and are considering observation should be counseled that there is a high probability (>75%-100%) of hearing preservation at 2 yr, moderately high probability (>50%-75%) of hearing preservation at 5 yr, and moderately low probability (>25%-50%) of hearing preservation at 10 yr. Question 8 Among patients with AAO-HNS class A or GR grade I hearing at baseline, what is the overall probability of maintaining serviceable hearing with conservative observation at 2 and 5 yr following diagnosis? Recommendation Level 3: Individuals who meet these criteria and are considering stereotactic radiosurgery should be counseled that there is a high probability (>75%-100%) of hearing preservation at 2 yr, and moderately high probability (>50%-75%) of hearing preservation at 5 yr. Insufficient data were available to determine the probability of hearing preservation at 10 yr for this population subset. Question 9 What patient and tumor-related factors influence progression to nonserviceable hearing during conservative observation? Recommendation Level 3: Individuals who meet these criteria and are considering observation should be counseled regarding probability of successful hearing preservation based on the following prognostic data: the most consistent prognostic features associated with maintenance of serviceable hearing are good preoperative word recognition and/or pure tone thresholds with variable cut-points reported, as well as nongrowth of the tumor. Tumor size at the time of diagnosis, age, and sex do not predict future development of nonserviceable hearing during observation. The full guideline can be found at: https://www.cns.org/guidelines/guidelines-manage-ment-patients-vestibular-schwannoma/chapter_3.
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Affiliation(s)
- Matthew L Carlson
- Department of Otorhinolaryngology, Mayo Clinic, School of Medicine, Rochester, Minnesota.,Department of Neurologic Surgery, Mayo Clinic, School of Medicine, Rochester, Minnesota
| | - Esther X Vivas
- Department of Otolaryngology-Head & Neck Surgery, Emory University School of Medicine, Atlanta, Georgia
| | - D Jay McCracken
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia
| | - Alex D Sweeney
- Bobby R. Alford Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, Texas
| | - Brian A Neff
- Department of Otorhinolaryngology, Mayo Clinic, School of Medicine, Rochester, Minnesota.,Department of Neurologic Surgery, Mayo Clinic, School of Medicine, Rochester, Minnesota
| | - Neil T Shepard
- Department of Otorhinolaryngology, Mayo Clinic, School of Medicine, Rochester, Minnesota
| | - Jeffrey J Olson
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, Georgia
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21
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Screening for vestibular schwannoma in the context of an ageing population. The Journal of Laryngology & Otology 2019; 133:640-649. [DOI: 10.1017/s0022215119000963] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractObjectiveTo review the literature regarding screening for vestibular schwannoma in the context of demographic changes leading to increasing numbers of elderly patients presenting with asymmetric auditory symptoms.MethodsA systematic review of the literature was performed, with narrative synthesis and statistical analysis of data where appropriate.ResultsVestibular schwannomas diagnosed in patients aged over 70 years exhibit slower growth patterns and tend to be of smaller size compared to those tumours in younger age groups. This fact, combined with reduced life expectancy, renders the probability of these tumours in the elderly requiring active treatment with surgery or stereotactic radiotherapy to be extremely low. Vestibular schwannomas in the elderly are much more likely to be managed by serial monitoring with magnetic resonance imaging. The weighted yield of magnetic resonance imaging in the diagnosis of vestibular schwannoma in all age groups is 1.18 per cent, with almost 85 scans required to diagnose 1 tumour.ConclusionAn evidence-based approach to the investigation of asymmetric hearing loss and tinnitus in the elderly patient can be used to formulate guidelines for the rational use of magnetic resonance imaging in this population.
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22
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Buch K, Juliano A, Stankovic KM, Curtin HD, Cunnane MB. Noncontrast vestibular schwannoma surveillance imaging including an MR cisternographic sequence: is there a need for postcontrast imaging? J Neurosurg 2019; 131:549-554. [PMID: 30095338 DOI: 10.3171/2018.3.jns1866] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/06/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the use of a noncontrast MRI protocol that includes a cisternographic sequence (CISS/FIESTA/3D DRIVE) compared to a protocol that includes a gadolinium-enhanced sequence in order to determine whether a noncontrast approach could be utilized to follow vestibular schwannomas. METHODS A total of 251 patients with vestibular schwannomas who underwent MRI of the temporal bones that included both cisternographic sequence and postcontrast T1 imaging between January 2000 and January 2016 for surveillance were included in this retrospective study. The size of the vestibular schwannomas was independently assessed on a noncontrast MR cisternographic sequence and compared to size measurements on a postcontrast sequence. The evaluation of intralesional cystic components (identified as T2 signal hyperintensity) and hemorrhagic components (identified with intrinsic T1 hyperintensity) on noncontrast MR sequences was compared to evaluation on postcontrast MR sequences to determine whether additional information could be derived from the postcontrast sequences. Additionally, any potentially clinically significant, incidentally detected findings on the postcontrast T1 sequences were documented and compared with the detection of these findings on the precontrast images. RESULTS No significant difference in vestibular schwannoma size was found when comparing measurements made on the images obtained with the MR cisternographic sequence and those made on images obtained with the postcontrast sequence (p = 0.99). Noncontrast MR images were better (detection rate of 87%) than postcontrast images for detection of cystic components. Noncontrast MR images were also better for identifying hemorrhagic components. No additional clinically relevant information regarding the tumors was identified on the postcontrast sequences. CONCLUSIONS Based on the results of this study, a noncontrast MR protocol that includes a cisternographic sequence would be sufficient for the accurate characterization of size and signal characteristics of vestibular schwannomas, obviating the need for gadolinium contrast administration for the routine surveillance of these lesions.
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Affiliation(s)
- Karen Buch
- 1Department of Neuroradiology, Massachusetts General Hospital; and
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23
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Zanoletti E, Mazzoni A, Martini A, Abbritti RV, Albertini R, Alexandre E, Baro V, Bartolini S, Bernardeschi D, Bivona R, Bonali M, Borghesi I, Borsetto D, Bovo R, Breun M, Calbucci F, Carlson ML, Caruso A, Cayé-Thomasen P, Cazzador D, Champagne PO, Colangeli R, Conte G, D'Avella D, Danesi G, Deantonio L, Denaro L, Di Berardino F, Draghi R, Ebner FH, Favaretto N, Ferri G, Fioravanti A, Froelich S, Giannuzzi A, Girasoli L, Grossardt BR, Guidi M, Hagen R, Hanakita S, Hardy DG, Iglesias VC, Jefferies S, Jia H, Kalamarides M, Kanaan IN, Krengli M, Landi A, Lauda L, Lepera D, Lieber S, Lloyd SLK, Lovato A, Maccarrone F, Macfarlane R, Magnan J, Magnoni L, Marchioni D, Marinelli JP, Marioni G, Mastronardi V, Matthies C, Moffat DA, Munari S, Nardone M, Pareschi R, Pavone C, Piccirillo E, Piras G, Presutti L, Restivo G, Reznitsky M, Roca E, Russo A, Sanna M, Sartori L, Scheich M, Shehata-Dieler W, Soloperto D, Sorrentino F, Sterkers O, Taibah A, Tatagiba M, Tealdo G, Vlad D, Wu H, Zanetti D. Surgery of the lateral skull base: a 50-year endeavour. ACTA OTORHINOLARYNGOLOGICA ITALICA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI OTORINOLARINGOLOGIA E CHIRURGIA CERVICO-FACCIALE 2019; 39:S1-S146. [PMID: 31130732 PMCID: PMC6540636 DOI: 10.14639/0392-100x-suppl.1-39-2019] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Disregarding the widely used division of skull base into anterior and lateral, since the skull base should be conceived as a single anatomic structure, it was to our convenience to group all those approaches that run from the antero-lateral, pure lateral and postero-lateral side of the skull base as “Surgery of the lateral skull base”. “50 years of endeavour” points to the great effort which has been made over the last decades, when more and more difficult surgeries were performed by reducing morbidity. The principle of lateral skull base surgery, “remove skull base bone to approach the base itself and the adjacent sites of the endo-esocranium”, was then combined with function preservation and with tailoring surgery to the pathology. The concept that histology dictates the extent of resection, balancing the intrinsic morbidity of each approach was the object of the first section of the present report. The main surgical approaches were described in the second section and were conceived not as a step-by-step description of technique, but as the highlighthening of the surgical principles. The third section was centered on open issues related to the tumor and its treatment. The topic of vestibular schwannoma was investigated with the current debate on observation, hearing preservation surgery, hearing rehabilitation, radiotherapy and the recent efforts to detect biological markers able to predict tumor growth. Jugular foramen paragangliomas were treated in the frame of radical or partial surgery, radiotherapy, partial “tailored” surgery and observation. Surgery on meningioma was debated from the point of view of the neurosurgeon and of the otologist. Endolymphatic sac tumors and malignant tumors of the external auditory canal were also treated, as well as chordomas, chondrosarcomas and petrous bone cholesteatomas. Finally, the fourth section focused on free-choice topics which were assigned to aknowledged experts. The aim of this work was attempting to report the state of the art of the lateral skull base surgery after 50 years of hard work and, above all, to raise questions on those issues which still need an answer, as to allow progress in knowledge through sharing of various experiences. At the end of the reading, if more doubts remain rather than certainties, the aim of this work will probably be achieved.
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Affiliation(s)
- E Zanoletti
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - A Mazzoni
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - A Martini
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - R V Abbritti
- Department of Neurosurgery, Lariboisière Hospital, University of Paris Diderot, Paris, France
| | | | - E Alexandre
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - V Baro
- Academic Neurosurgery, Department of Neuroscience DNS, University of Padova Medical School, Padova, Italy
| | - S Bartolini
- Neurosurgery, Bellaria Hospital, Bologna, Italy
| | - D Bernardeschi
- AP-HP, Groupe Hôspital-Universitaire Pitié-Salpêtrière, Neuro-Sensory Surgical Department and NF2 Rare Disease Centre, Paris, France
- Sorbonne Université, Paris, France
| | - R Bivona
- ENT and Skull-Base Surgery Department, Department of Neurosciences, Ospedale Papa Giovanni XXIII, Bergamo, Italy
| | - M Bonali
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Modena, Italy
| | - I Borghesi
- Neurosurgery, Maria Cecilia Hospital, Cotignola (RA), Italy
| | - D Borsetto
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - R Bovo
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - M Breun
- Department of Neurosurgery, Julius Maximilians University Hospital Würzburg, Bavaria, Germany
| | - F Calbucci
- Neurosurgery, Maria Cecilia Hospital, Cotignola (RA), Italy
| | - M L Carlson
- Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, MN, USA
- Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA
| | - A Caruso
- Gruppo Otologico, Piacenza-Rome, Italy
| | - P Cayé-Thomasen
- The Department of Otorhinolaryngology, Head & Neck Surgery and Audiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - D Cazzador
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
- Department of Neuroscience DNS, Section of Human Anatomy, Padova University, Padova, Italy
| | - P-O Champagne
- Department of Neurosurgery, Lariboisière Hospital, University of Paris Diderot, Paris, France
| | - R Colangeli
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - G Conte
- Department of Neuroradiology, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milano, Italy
| | - D D'Avella
- Academic Neurosurgery, Department of Neuroscience DNS, University of Padova Medical School, Padova, Italy
| | - G Danesi
- ENT and Skull-Base Surgery Department, Department of Neurosciences, Ospedale Papa Giovanni XXIII, Bergamo, Italy
| | - L Deantonio
- Department of Radiation Oncology, University Hospital Maggiore della Carità, Novara, Italy
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - L Denaro
- Academic Neurosurgery, Department of Neuroscience DNS, University of Padova Medical School, Padova, Italy
| | - F Di Berardino
- Unit of Audiology, Department of Clinical Sciences and Community Health, University of Milano, Italy
- Department of Surgery, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milano, Italy
| | - R Draghi
- Neurosurgery, Maria Cecilia Hospital, Cotignola (RA), Italy
| | - F H Ebner
- Department of Neurosurgery, Eberhard Karls University Tübingen, Germany
| | - N Favaretto
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - G Ferri
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Modena, Italy
| | | | - S Froelich
- Department of Neurosurgery, Lariboisière Hospital, University of Paris Diderot, Paris, France
| | | | - L Girasoli
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - B R Grossardt
- Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - M Guidi
- Gruppo Otologico, Piacenza-Rome, Italy
| | - R Hagen
- Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, "Julius-Maximilians" University Hospital of Würzburg, Bavaria, Germany
| | - S Hanakita
- Department of Neurosurgery, Lariboisière Hospital, University of Paris Diderot, Paris, France
| | - D G Hardy
- Department of Neurosurgery, Cambridge University Hospital, Cambridge, UK
| | - V C Iglesias
- ENT and Skull-Base Surgery Department, Department of Neurosciences, Ospedale Papa Giovanni XXIII, Bergamo, Italy
| | - S Jefferies
- Oncology Department, Cambridge University Hospital, Cambridge, UK
| | - H Jia
- Department of Otolaryngology Head and Neck Surgery, Shanghai Ninh People's Hospital, Shanghai Jiatong University School of Medicine, China
| | - M Kalamarides
- AP-HP, Groupe Hôspital-Universitaire Pitié-Salpêtrière, Neuro-Sensory Surgical Department and NF2 Rare Disease Centre, Paris, France
- Sorbonne Université, Paris, France
| | - I N Kanaan
- Department of Neurosciences, King Faisal Specialist Hospital & Research Center, Alfaisal University, College of Medicine, Riyadh, KSA
| | - M Krengli
- Department of Radiation Oncology, University Hospital Maggiore della Carità, Novara, Italy
- Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - A Landi
- Academic Neurosurgery, Department of Neuroscience DNS, University of Padova Medical School, Padova, Italy
| | - L Lauda
- Gruppo Otologico, Piacenza-Rome, Italy
| | - D Lepera
- ENT & Skull-Base Department, Ospedale Nuovo di Legnano, Legnano (MI), Italy
| | - S Lieber
- Department of Neurosurgery, Eberhard Karls University Tübingen, Germany
| | - S L K Lloyd
- Department of Neuro-Otology and Skull-Base Surgery Manchester Royal Infirmary, Manchester, UK
| | - A Lovato
- Department of Neuroscience DNS, Audiology Unit, Padova University, Treviso, Italy
| | - F Maccarrone
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Modena, Italy
| | - R Macfarlane
- Department of Neurosurgery, Cambridge University Hospital, Cambridge, UK
| | - J Magnan
- University Aix-Marseille, France
| | - L Magnoni
- Unit of Audiology, Department of Clinical Sciences and Community Health, University of Milano, Italy
- Department of Surgery, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milano, Italy
| | - D Marchioni
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Verona, Italy
| | | | - G Marioni
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | | | - C Matthies
- Department of Neurosurgery, Julius Maximilians University Hospital Würzburg, Bavaria, Germany
| | - D A Moffat
- Department of Neuro-otology and Skull Base Surgery, Cambridge University Hospital, Cambridge, UK
| | - S Munari
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - M Nardone
- ENT Department, Treviglio (BG), Italy
| | - R Pareschi
- ENT & Skull-Base Department, Ospedale Nuovo di Legnano, Legnano (MI), Italy
| | - C Pavone
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | | | - G Piras
- Gruppo Otologico, Piacenza-Rome, Italy
| | - L Presutti
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Modena, Italy
| | - G Restivo
- ENT and Skull-Base Surgery Department, Department of Neurosciences, Ospedale Papa Giovanni XXIII, Bergamo, Italy
| | - M Reznitsky
- The Department of Otorhinolaryngology, Head & Neck Surgery and Audiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - E Roca
- Department of Neurosurgery, Lariboisière Hospital, University of Paris Diderot, Paris, France
| | - A Russo
- Gruppo Otologico, Piacenza-Rome, Italy
| | - M Sanna
- Gruppo Otologico, Piacenza-Rome, Italy
| | - L Sartori
- Academic Neurosurgery, Department of Neuroscience DNS, University of Padova Medical School, Padova, Italy
| | - M Scheich
- Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, "Julius-Maximilians" University Hospital of Würzburg, Bavaria, Germany
| | - W Shehata-Dieler
- Department of Otorhinolaryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery, "Julius-Maximilians" University Hospital of Würzburg, Bavaria, Germany
| | - D Soloperto
- Otolaryngology-Head and Neck Surgery Department, University Hospital of Verona, Italy
| | - F Sorrentino
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - O Sterkers
- AP-HP, Groupe Hôspital-Universitaire Pitié-Salpêtrière, Neuro-Sensory Surgical Department and NF2 Rare Disease Centre, Paris, France
- Sorbonne Université, Paris, France
| | - A Taibah
- Gruppo Otologico, Piacenza-Rome, Italy
| | - M Tatagiba
- Department of Neurosurgery, Eberhard Karls University Tübingen, Germany
| | - G Tealdo
- Department of Neuroscience DNS, Otolaryngology Section, Padova University, Padova, Italy
| | - D Vlad
- Gruppo Otologico, Piacenza-Rome, Italy
| | - H Wu
- Department of Otolaryngology Head and Neck Surgery, Shanghai Ninh People's Hospital, Shanghai Jiatong University School of Medicine, China
| | - D Zanetti
- Unit of Audiology, Department of Clinical Sciences and Community Health, University of Milano, Italy
- Department of Surgery, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milano, Italy
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Reznitsky M, Cayé-Thomasen P. Systematic Review of Hearing Preservation in Observed Vestibular Schwannoma. J Neurol Surg B Skull Base 2019; 80:165-168. [PMID: 30931224 DOI: 10.1055/s-0039-1679894] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 01/07/2019] [Indexed: 10/27/2022] Open
Abstract
Objective This is a systematic review of the literature on the spontaneous course of hearing in patients observed with a vestibular schwannoma. Included studies are appraised using the Grading of Recommendations Assessment, Development and Evaluation system. Design PubMed, Embase, Medline, Cochrane library, and CINAHL (Cumulative Index to Nursing and Allied Health Literature) were searched for literature on hearing in patients observed with a vestibular schwannoma. Participants Of 217 evaluated papers, 15 were included, representing a total of 2,142 patients. Main Outcome Measures Hearing according to the AAO-HNS (American Academy of Otorhinolaryngology- Head and Neck Surgery) classification system. Weighted average of the proportion of patients preserving good hearing (>70% discrimination score and pure tone audiometry [PTA] < 30dB) and serviceable hearing (>50% discrimination score and PTA < 50dB) was determined. Results Fifty percent of patients presenting with good hearing at diagnosis had preserved this after a mean of 5 years of observation, whereas serviceable hearing was preserved in 54%. Patients with normal discrimination at diagnosis preserve their hearing very well. Very few studies exist on long-term hearing preservation. Conclusions After 5 years of observation, around half of patients will have preserved good or serviceable hearing. Patients with normal discrimination at diagnosis are more likely to preserve good hearing.
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Affiliation(s)
- Martin Reznitsky
- Department of Oto-rhino-laryngology, Head and Neck Surgery, F2074, Copenhagen University Hospital Rigshospitalet, Copenhagen Ø, Denmark
| | - Per Cayé-Thomasen
- Department of Oto-rhino-laryngology, Head and Neck Surgery, F2074, Copenhagen University Hospital Rigshospitalet, Copenhagen Ø, Denmark
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Kleijwegt M, Bettink F, Malessy M, Putter H, van der Mey A. Clinical Predictors Leading to Change of Initial Conservative Treatment of 836 Vestibular Schwannomas. J Neurol Surg B Skull Base 2019; 81:15-21. [PMID: 32021745 DOI: 10.1055/s-0039-1678708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/11/2019] [Indexed: 10/27/2022] Open
Abstract
Objective This study was aimed to determine the role of clinical presentation and tumor characteristics in vestibular schwannoma (VS) at diagnosis, initially treated with conservative management. Design The study was designed as a retrospective chart review. Setting The study was prepared at national tertiary referral center for VS patients. Participants A total of 836 VS patients, initially treated conservatively, were included. Main Outcome Measures Patient characteristics: age at diagnosis, gender, frequency, and duration of, hearing loss, tinnitus, balance disorder (unsteadiness, dizziness, and vertigo), respectively; and tumor characteristics: laterality, growth, cystic component, and location were analyzed in relation to tumor size at diagnosis and change in treatment strategy. Results In total, 169 (20%) patients had a change in treatment strategy. Factors at diagnosis that had a high influence on intervention were a short duration of hearing loss (hazard ratio [HR]: 4.8, p < 0.001) and cystic tumors (HR = 2.6, p < 0.001). Balance disorders and extracanalicular (EC) tumor location have a medium influence on intervention (HR = 1.6, p < 0.01). Tumour growth was seen in 55% of the intervention group; we found a significant correlation with a short duration of hearing loss. Cystic VS was significantly higher between the medium and large tumors, 24.3% and 38.1%. ( p = 0.001), respectively. Conclusions Patients with a short duration of hearing loss, balance disorders, EC located tumors, and cystic tumors have a significantly higher chance of a change in treatment strategy. Large tumor size at diagnosis and a cystic component were related to age > 65 years at diagnosis.
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Affiliation(s)
- Maarten Kleijwegt
- Department of ENT, Leiden University Medical Center, Leiden, The Netherlands
| | - Floris Bettink
- Department of ENT, Leiden University Medical Center, Leiden, The Netherlands
| | - Martijn Malessy
- Department of Neurosurgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Hein Putter
- Department of Medical Statistics, Leiden University Medical Center, Leiden, The Netherlands
| | - Andel van der Mey
- Department of ENT, Leiden University Medical Center, Leiden, The Netherlands
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Kaul V, Cosetti MK. Management of Vestibular Schwannoma (Including NF2). Otolaryngol Clin North Am 2018; 51:1193-1212. [DOI: 10.1016/j.otc.2018.07.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Cohen-Inbar O, Sviri GE. Adaptive Hybrid Surgery: Paradigm Shift for Patient-centered Neurosurgery. Rambam Maimonides Med J 2018; 9:RMMJ.10346. [PMID: 30089092 PMCID: PMC6115482 DOI: 10.5041/rmmj.10346] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The surgical management of cerebral and skull base lesions has evolved greatly in the last few decades. Still, a complete resection of lesions abutting critical neurovascular structures carries significant morbidity. Stereotactic radiosurgery (SRS) has emerged as an increasingly accepted treatment option. Minimally invasive, SRS results in excellent tumor control and low complication rates in patients with moderate-size tumors. The management of large cerebral and skull base tumors remains a formidable challenge. In such large tumors, radical surgical extirpation offers a significantly higher risk of neurological deficit, and SRS alone cannot be used because of the elevated incidence of radiation-induced complications known to be associated with large-volume tumors. With increasing treatment volumes, SRS-associated tumor control rates decrease and complication rates increase. Planned subtotal resection (STR) with adjuvant SRS (adaptive hybrid surgery [AHS]) has gained increasing interest in recent years as a multimodal approach. In AHS, a planned STR (aimed at decreasing surgical morbidity) followed by SRS to a preplanned residual tumor aids in harnessing advantages offered by both approaches. Although intuitive and reasonable, this paradigm shift from maximal resection at all cost has not been adopted widely. Combining open microsurgery with SRS requires a good understanding of both surgical and SRS modalities and their respective safety-efficacy features. We present a review and discussion on AHS as a modern, multidisciplinary treatment approach. Available data and views are discussed for vestibular schwannoma (VS) as a sample tumor. Other indications for AHS are mentioned in brief.
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Affiliation(s)
- Or Cohen-Inbar
- Department of Neurological Surgery, Rambam Maimonides Health Care Campus, Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
- Department of Neurological Surgery and Gamma-Knife Center, University of Virginia Health Care Campus, Charlottesville, VA, USA
- To whom correspondence should be addressed. E-mail:
| | - Gil E Sviri
- Department of Neurological Surgery, Rambam Maimonides Health Care Campus, Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
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Sheppard JP, Lagman C, Prashant GN, Alkhalid Y, Nguyen T, Duong C, Udawatta M, Gaonkar B, Tenn SE, Bloch O, Yang I. Planned Subtotal Resection of Vestibular Schwannoma Differs from the Ideal Radiosurgical Target Defined by Adaptive Hybrid Surgery. World Neurosurg 2018. [PMID: 29530701 DOI: 10.1016/j.wneu.2018.03.005] [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] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To retrospectively compare ideal radiosurgical target volumes defined by a manual method (surgeon) to those determined by Adaptive Hybrid Surgery (AHS) operative planning software in 7 patients with vestibular schwannoma (VS). METHODS Four attending surgeons (3 neurosurgeons and 1 ear, nose, and throat surgeon) manually contoured planned residual tumors volumes for 7 consecutive patients with VS. Next, the AHS software determined the ideal radiosurgical target volumes based on a specified radiotherapy plan. Our primary measure was the difference between the average planned residual tumor volumes and the ideal radiosurgical target volumes defined by AHS (dRVAHS-planned). RESULTS We included 7 consecutive patients with VS in this study. The planned residual tumor volumes were smaller than the ideal radiosurgical target volumes defined by AHS (1.6 vs. 4.5 cm3, P = 0.004). On average, the actual post-operative residual tumor volumes were smaller than the ideal radiosurgical target volumes defined by AHS (2.2 cm3 vs. 4.5 cm3; P = 0.02). The average difference between the ideal radiosurgical target volume defined by AHS and the planned residual tumor volume (dRVAHS-planned) was 2.9 ± 1.7 cm3, and we observed a trend toward larger dRVAHS-planned in patients who lost serviceable facial nerve function compared with patients who maintained serviceable facial nerve function (4.7 cm3 vs. 1.9 cm3; P = 0.06). CONCLUSIONS Planned subtotal resection of VS diverges from the ideal radiosurgical target defined by AHS, but whether that influences clinical outcomes is unclear.
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Affiliation(s)
- John P Sheppard
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Carlito Lagman
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Giyarpuram N Prashant
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Yasmine Alkhalid
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Thien Nguyen
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Courtney Duong
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Methma Udawatta
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Bilwaj Gaonkar
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Stephen E Tenn
- Department of Radiation Oncology, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA
| | - Orin Bloch
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Isaac Yang
- Department of Neurosurgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA; Department of Radiation Oncology, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA; Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA; Jonsson Comprehensive Cancer Center, Ronald Reagan UCLA Medical Center at the University of California, Los Angeles (UCLA), Los Angeles, California, USA; Department of Neurosurgery, Harbor-UCLA Medical Center of the University of California, Los Angeles (UCLA), Torrance, California, USA; Los Angeles Biomedical Research Institute, Harbor-UCLA Medical Center of the University of California, Los Angeles (UCLA), Torrance, California, USA.
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Ehret F, Muacevic A. A Suspected Vestibular Schwannoma with Uncharacteristic Growth Dynamic and Symptom Severity: A Case Report. Cureus 2018. [PMID: 29531877 PMCID: PMC5837235 DOI: 10.7759/cureus.2024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Vestibular schwannomas are mostly sporadic, neuroectodermal, benign tumors of the myelin-forming cells of the vestibulocochlear nerve. Typical initial symptoms of vestibular schwannomas often include unilateral hearing loss, tinnitus, vertigo, and headaches. As schwannomas characteristically show a slow growth rate and various symptoms, different therapeutic approaches are possible, ranging from a watchful waiting strategy to radiation therapy and neurosurgical tumor removal. In addition, these treatment options should be evaluated carefully and assigned individually to the patients’ needs and symptoms while respecting the feasibility and possible outcome of the chosen treatment. We present a 69-year-old patient with an atypical, severe symptom constellation and tumor growth dynamic. The planned treatment of the schwannoma with radiosurgery revealed an unforeseen change of focus. Most notably, this case emphasizes the importance of a thorough radiological and patient-orientated assessment.
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Affiliation(s)
- Felix Ehret
- Radiation Oncology, European CyberKnife Center Munich
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Kirchmann M, Karnov K, Hansen S, Dethloff T, Stangerup SE, Caye-Thomasen P. Ten-Year Follow-up on Tumor Growth and Hearing in Patients Observed With an Intracanalicular Vestibular Schwannoma. Neurosurgery 2017; 80:49-56. [PMID: 27571523 DOI: 10.1227/neu.0000000000001414] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Accepted: 06/05/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Reports on the natural history of tumor growth and hearing in patients with a vestibular schwannoma (VS) are almost exclusively short-term data. Long-term data are needed for comparison with results of surgery and radiotherapy. OBJECTIVE To report the long-term occurrence of tumor growth and hearing loss in 156 patients diagnosed with an intracanalicular VS and managed conservatively. METHODS In this longitudinal cohort study, diagnostic and follow-up magnetic resonance imaging and audiometry were compared. RESULTS After a follow-up of 9.5 years, tumor growth had occurred in 37% and growth into the cerebellopontine angle had occurred in 23% of patients. Conservative treatment failed in 15%. The pure tone average had increased from 51- to 72-dB hearing level, and the speech discrimination score (SDS) had decreased from 60% to 34%. The number of patients with good hearing (SDS > 70%) was reduced from 52% to 22%, and the number of patients with American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) class A hearing was reduced from 19% to 3%. Hearing was preserved better in patients with 100% SDS at diagnosis than in patients with even a small loss of SDS. Serviceable hearing was preserved in 34% according to AAO-HNS (class A-B) and in 58% according to the word recognition score (class I-II). Rate of hearing loss was higher in patients with growing tumors. CONCLUSION Tumor growth occurred in only a minority of patients diagnosed with an intracanalicular VS during 10 years of observation. The risk of hearing loss is small in patients with normal discrimination at diagnosis. Serviceable hearing is preserved spontaneously in 34% according to AAO-HNS and in 58% according to the word recognition score.
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Affiliation(s)
- Malene Kirchmann
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, and Audiology, Copenhagen University Hospital Rigshos-pitalet, Copenhagen, Denmark
| | - Kirstine Karnov
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, and Audiology, Copenhagen University Hospital Rigshos-pitalet, Copenhagen, Denmark
| | - Søren Hansen
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, and Audiology, Copenhagen University Hospital Rigshos-pitalet, Copenhagen, Denmark
| | - Thomas Dethloff
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, and Audiology, Copenhagen University Hospital Rigshos-pitalet, Copenhagen, Denmark
| | - Sven-Eric Stangerup
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, and Audiology, Copenhagen University Hospital Rigshos-pitalet, Copenhagen, Denmark
| | - Per Caye-Thomasen
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, and Audiology, Copenhagen University Hospital Rigshos-pitalet, Copenhagen, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Intracanalicular Vestibular Schwannomas: Initial Clinical Manifestation, Imaging Classification, and Risk Stratification for Management Proposal. Otol Neurotol 2017; 38:1345-1350. [DOI: 10.1097/mao.0000000000001538] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Correlation Between Aspirin Intake and Reduced Growth of Human Vestibular Schwannoma: Volumetric Analysis. Otol Neurotol 2017; 37:1428-34. [PMID: 27631829 DOI: 10.1097/mao.0000000000001180] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To determine whether people with sporadic vestibular schwannoma (VS) who take aspirin for unrelated medical reasons exhibit less tumor growth than nonaspirin users. We previously demonstrated the efficacy of salicylates in inhibiting VS growth in vitro, corroborating the results of our retrospective clinical study, which found halted VS growth (based on linear tumor measurements) in aspirin users. The current study evaluates this association using more accurate tumor volumetric measurements, and quantifies the degree of frequency-specific, VS-induced hearing loss. STUDY DESIGN Retrospective analysis. SETTING Tertiary care hospital. PATIENTS Diagnosed with VS between 1980 and 2012, followed by serial magnetic resonance imaging for at least 1 year. MAIN OUTCOME MEASURES Patient history of aspirin intake; change in VS volume over time of observation; frequency-specific, VS-induced audiometric threshold shifts. RESULTS Of the 347 patients followed by serial magnetic resonance imaging scans, 86 had sequential scans available for 3D-segmented volumetric analysis for up to 11 years of follow-up (median 53 mo). Twenty-five (29%) had documented history of aspirin intake; 8 (32%) of these demonstrated VS growth. Of the 61 (71%) nonusers, 36 (59%) demonstrated growth. A significant inverse association was found among aspirin users and VS growth: odds ratio 0.32, 95% confidence interval 0.11 to 0.91. VS-induced audiometric thresholds shifts were larger above than below 2000 Hz. CONCLUSION Our volumetric analysis of VS growth reaffirms the results of our linear analysis and suggests that aspirin may inhibit VS growth. The audiometric findings are consistent with the previously reported VS-induced predominantly high-frequency sensorineural hearing loss.
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Single Institutional Experience With Observing 564 Vestibular Schwannomas: Factors Associated With Tumor Growth. Otol Neurotol 2017; 37:1630-1636. [PMID: 27668793 DOI: 10.1097/mao.0000000000001219] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To characterize the risk and predictors of growth during observation of vestibular schwannomas (VS). STUDY DESIGN Retrospective case series. SETTING Single academic, tertiary care center. PATIENTS Five hundred sixty-four consecutive VS patients who underwent at least two magnetic resonance imaging (MRI) studies before intervention. INTERVENTION(S) Serial MRI studies. MAIN OUTCOME MEASURE(S) Tumor growth, defined as a ≥2 mm increase in the maximum tumor diameter between consecutive MRI studies, or between the first and last study. RESULTS A total of 1296 patients (1995-2015) with VS were identified. Of those, 564 patients (median age 59.2 years; 53.5% female) were initially observed and underwent multiple MRI studies (median follow-up 22.9 months, interquartile range [IQR] 11.7-42.7). The median maximum tumor diameter at presentation was 1.00 cm (IQR 0.6-1.51 cm). In all, 40.8% of tumors demonstrated growth and 32.1% underwent intervention (21.5% microsurgery, 10.5% radiation) during the surveillance period. Multivariable Cox regression analysis showed that for each tumor, the risk of growth or intervention was significantly increased for larger initial VS diameters (HR = 2.22; 95% CI: 1.90-2.61) and when disequilibrium was a presenting symptom (HR = 1.70; 95% CI: 1.30-2.23). Patient age, sex, aspirin use, and presenting symptoms of asymmetric hearing loss, tinnitus, and vertigo were not associated with tumor growth. CONCLUSION To date, this is the largest series of observed VS reported in the literature. Risk of VS growth is significantly increased among patients who present with larger tumors and who have concomitant disequilibrium.IRB:: 151481. DEFINE PROFESSIONAL PRACTICE GAP AND EDUCATIONAL NEED No cohort with this sample size has assessed vestibular schwannoma growth rates in conjunction with this number of variables. LEARNING OBJECTIVE To characterize vestibular schwannoma growth rates and predictors of growth.
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Zou J, Hirvonen T. "Wait and scan" management of patients with vestibular schwannoma and the relevance of non-contrast MRI in the follow-up. J Otol 2017; 12:174-184. [PMID: 29937853 PMCID: PMC6002632 DOI: 10.1016/j.joto.2017.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/29/2017] [Accepted: 08/04/2017] [Indexed: 02/04/2023] Open
Abstract
Vestibular schwannoma (VS) is a slow-growing benign neoplasm. There has been an evolution in the management of VS from active treatments (microsurgery and stereotactic radiotherapy) to conservative management (wait and scan). Regular MRI scanning is necessary to monitor tumor progression. Conservative management causes significantly less complications and offers a higher quality of life compared with active treatments. The mean growth rate of VS varies from 0.4 to 2.9 mm/year, and spontaneous shrinkage is observed in 3.8 percent of tumors during observation. If significant growth occurs, active treatment is considered. Significant growth is defined as an increase of at least 3 mm in the largest extrameatal diameter in any plane between the first and last available scans. The vestibulocochlear nerve is surrounded by cerebrospinal fluid, which provides natural contrast for MRI; thus, gadolinium may not be needed to detect VS. Specific sequences have high sensitivity, specificity, and accuracy for detection of progression. Hypointense signal in the ipsilateral inner ear fluid might be a useful sign to distinguish VS from meningioma. In this paper, we summarize the current status of research on conservative management and non-contrast MRI for the detection of VS.
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Affiliation(s)
- Jing Zou
- Department of Otolaryngology-Head and Neck Surgery, Center for Otolaryngology-Head & Neck Surgery of Chinese PLA, Changhai Hospital, Second Military Medical University, Shanghai, China
- Corresponding author. Department of Otolaryngology-Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Changhai Road #168, 200433 Shanghai, China.
| | - Timo Hirvonen
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Wu H, Zhang L, Han D, Mao Y, Yang J, Wang Z, Jia W, Zhong P, Jia H. Summary and consensus in 7th International Conference on acoustic neuroma: An update for the management of sporadic acoustic neuromas. World J Otorhinolaryngol Head Neck Surg 2016; 2:234-239. [PMID: 29204572 PMCID: PMC5698531 DOI: 10.1016/j.wjorl.2016.10.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 10/17/2016] [Accepted: 10/19/2016] [Indexed: 11/26/2022] Open
Abstract
Sporadic vestibular schwannoma (acoustic neuroma) is a benign tumor arising from cochleovestibular nerve. Nowadays, various specialties and medical centers are treating this disease, and the multidisciplinary collaboration is the trend. In an effort to promote a uniform standard for reporting clinical results, even for treatment indications, the mainly controversies were posed and discussed during the 7th International Conference on acoustic neuroma, and the agreement was summarized by the Committee of this conference. The main symptoms grading and tumor stage should note its name of classification for making them comparable. The goal of the modern managements for vestibular schwannoma is to improve the quality of life with lower mortality, lower morbidity and better neurological function preservation. The experience of surgical team and their preference might be a major factor for the outcome. Because of lacking of long-term follow-up large data after radiotherapy, and with the development of microsurgery, radiotherapy is now less recommended except for recurrent cases or elderly patients.
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Affiliation(s)
- Hao Wu
- Department of Otolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China.,Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Shanghai University School of Medicine, Shanghai 200092, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Liwei Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medial University, Beijing 100050, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Dongyi Han
- Department of Otolaryngology Head and Neck Surgery, People's Liberation Army General Hospital, Beijing 100853, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Jun Yang
- Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Shanghai University School of Medicine, Shanghai 200092, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Zhaoyan Wang
- Department of Otolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China.,Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Shanghai University School of Medicine, Shanghai 200092, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Wang Jia
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medial University, Beijing 100050, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Ping Zhong
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China.,Committee of 7th International Conference on Acoustic Neuroma, Shanghai, China
| | - Huan Jia
- Department of Otolaryngology Head and Neck Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China.,Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital Shanghai University School of Medicine, Shanghai 200092, China
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Stereotactic radiotherapy of vestibular schwannoma. Strahlenther Onkol 2016; 193:200-212. [DOI: 10.1007/s00066-016-1086-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 11/14/2016] [Indexed: 01/24/2023]
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Hearing Loss Progresses Faster in Patients With Growing Intracanalicular Vestibular Schwannomas. Otol Neurotol 2016; 37:1442-8. [DOI: 10.1097/mao.0000000000001190] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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The Clinical Behavior of Asymptomatic Incidental Vestibular Schwannomas Is Similar to That of Symptomatic Tumors. Otol Neurotol 2016; 37:1435-41. [DOI: 10.1097/mao.0000000000001188] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Paldor I, Chen AS, Kaye AH. Growth rate of vestibular schwannoma. J Clin Neurosci 2016; 32:1-8. [PMID: 27450283 DOI: 10.1016/j.jocn.2016.05.003] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 05/15/2016] [Indexed: 11/30/2022]
Abstract
Vestibular schwannoma (VS) is the most common tumor in the extra-axial posterior fossa compartment in adults. Growth rate is paramount to decision making regarding treatment and follow up of these tumors. We conducted a comprehensive review of the literature to answer four questions: What percentage of newly diagnosed VS will grow on follow-up? What factors correlate to tumor growth? What is the "normal" growth rate for sporadic VS? What factors characterize VS with rapid growth? Thirty-seven reports, with more than 4000 patients, fit our review criteria. One third of newly diagnosed VS will grow on follow-up of 1-3years. However, after 5years, up to one half will grow. Patient age and sex do not influence growth of VS. Hearing loss and vertigo at presentation do not predict tumor growth. It is unclear whether balance disturbance or tinnitus predict tumor growth. Tumor size and location do not predict tumor growth. Growth in the first year of observation is a strong predictor of tumor growth. The average growth rate of a VS is 0.99-1.11mm/year. However, the expected growth rate for VS that have been shown to grow at first follow-up is 3mm/year. Factors that may predict tumor growth of above 4mm/year are cystic and hemorrhagic features in the tumor, and hormonal treatment. VS grow at an average 1mm/year. VS that have been shown to grow at first follow-up should be considered for treatment, unless contraindicated. Long term follow-up is recommended for VS.
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Affiliation(s)
- Iddo Paldor
- Department of Neurosurgery, The Royal Melbourne Hospital, 300 Grattan street, Parkville, Victoria 3052, Australia.
| | - Annie S Chen
- Department of Neurosurgery, The Royal Melbourne Hospital, 300 Grattan street, Parkville, Victoria 3052, Australia
| | - Andrew H Kaye
- Department of Surgery, The University of Melbourne, Parkville, Australia
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McRackan TR, Brackmann DE. Historical Perspective on Evolution in Management of Lateral Skull Base Tumors. Otolaryngol Clin North Am 2015; 48:397-405. [DOI: 10.1016/j.otc.2015.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Jethanamest D, Rivera AM, Ji H, Chokkalingam V, Telischi FF, Angeli SI. Conservative management of vestibular schwannoma: Predictors of growth and hearing. Laryngoscope 2015; 125:2163-8. [DOI: 10.1002/lary.25159] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Daniel Jethanamest
- Department of Otolaryngology; New York University School of Medicine; New York New York
| | - Andrew M. Rivera
- Department of Otolaryngology; University of Miami Miller School of Medicine; Miami Florida U.S.A
| | - Hongzhao Ji
- Department of Otolaryngology; University of Miami Miller School of Medicine; Miami Florida U.S.A
| | | | - Fred F. Telischi
- Department of Otolaryngology; University of Miami Miller School of Medicine; Miami Florida U.S.A
| | - Simon I. Angeli
- Department of Otolaryngology; University of Miami Miller School of Medicine; Miami Florida U.S.A
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Møller MN, Hansen S, Miyazaki H, Stangerup SE, Caye-Thomasen P. Active Treatment is Not Indicated in the Majority of Patients Diagnosed with a Vestibular Schwannoma: A Review on the Natural History of Hearing and Tumor Growth. CURRENT OTORHINOLARYNGOLOGY REPORTS 2014. [DOI: 10.1007/s40136-014-0064-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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