51
|
Lucidi D, Paludetti G, Settimi S, De Corso E, Picciotti PM, Sergi B. How Long Is Otosclerosis Surgery Effective? Hearing Results after a 22-Year Follow-Up. Audiol Neurootol 2020; 26:121-126. [PMID: 32882686 DOI: 10.1159/000509106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 06/02/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Stapes surgery is a safe procedure, with favourable hearing outcome. The objective of the study is to assess the long-term hearing results, addressing the bone conduction (BC) decay and the need for hearing aids in otosclerosis patients. METHODS We enrolled patients who underwent stapes surgery by means of stapedectomy or stapedotomy between 1991 and 2001. All enrolled patients underwent pure-tone audiometry (PTA) between September 2017 and June 2018. A set of questions was administered to record the prevalence of subjective symptoms and the need for hearing aids. RESULTS Seventy patients were enrolled for a long-term evaluation; 37 patients underwent bilateral surgery; therefore, 107 ears were included in the analysis. The average follow-up period was 22 years. No statistically significant difference was found between early and late post-operative air conduction (AC) PTA (41 vs. 49 dB; p > 0.05) nor between early and late post-operative BC-PTA (29 vs. 37 dB; p > 0.05). A significant difference was observed for AC at 8 kHz (65 vs. 78 dB; p < 0.05) and BC at 2 and 4 kHz (28 vs. 40 dB and 45 vs. 58 dB, respectively; p < 0.05). CONCLUSIONS This is, to our knowledge, the longest mean follow-up time in the literature. A mild decrease in both AC and BC threshold can be expected and the sensorineural decay is more pronounced on the high frequencies. The subjective hearing symptoms and overall sound perception are satisfactory.
Collapse
Affiliation(s)
- Daniela Lucidi
- Head & Neck Department, Università Cattolica del Sacro Cuore, 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
| | - Stefano Settimi
- Head & Neck Department, Università Cattolica del Sacro Cuore, Rome, Italy,
| | - Eugenio De Corso
- Otorhinolaryngology and Head & Neck Surgery Unit, 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
| | - 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
| |
Collapse
|
52
|
Touska P, Connor S. Imaging of the temporal bone. Clin Radiol 2020; 75:658-674. [DOI: 10.1016/j.crad.2020.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022]
|
53
|
Wiatr A, Wiatr M. Unfavourable prognostic factors in patients treated surgically for otosclerosis. Acta Otolaryngol 2020; 140:533-536. [PMID: 32223484 DOI: 10.1080/00016489.2020.1745270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Backgrounds: Otosclerosis is the cause of between 5% and 9% of all deafness cases and between 18% and 22% of conductive hearing loss cases. Neurosensory deafness develops in 30% of patients with otosclerosis.Aims/Objectives: The aim was to seek a correlation that would reflect the dependence of the results of middle ear surgery on the type of abnormalities atypical of otosclerosis but found during the stapedotomy surgery.Materials and Methods: The analysis included 140 patients who underwent surgery for otosclerosis. The hearing of all patients was assessed using an audiometric test.Results: In the assessment of changes in the mean bone conduction values, statistically significant differences between the reference group and the subgroup of patients on whom a myringoplasty was performed, as well as in patients with adhesions present in the middle ear spaces, were found only for the 500 Hz frequency.Conclusion and Significance: The removal of abnormalities, such as the loss of the eardrum (iatrogenic), changes to the lining and adhesions other than those typical of otosclerosis, restores middle ear mechanics after a stapedotomy on the inner ear and leads to a measurable improvement in mean bone conduction values.
Collapse
Affiliation(s)
- Agnieszka Wiatr
- Department of Otolaryngology, Jagiellonian University Medical College, Kraków, Poland
| | - Maciej Wiatr
- Department of Otolaryngology, Jagiellonian University Medical College, Kraków, Poland
| |
Collapse
|
54
|
Erdem D, Şevik Eliçora S, Güven B, Dinç AE. GPER-1 and sex-hormone levels in patients with otosclerosis. Am J Otolaryngol 2020; 41:102442. [PMID: 32144019 DOI: 10.1016/j.amjoto.2020.102442] [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: 02/13/2020] [Revised: 02/18/2020] [Accepted: 02/18/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Otosclerosis is a widespread disease but the etiopathogenesis is still not fully understood. Hormonal factors especially estrogens are accused in recent years. The study aimed to evaluate the levels of G-protein associated membrane estrogen receptor-1 (GPER-1) and sex-hormones in patients with otosclerosis. SUBJECT AND METHODS The study included 60 people (30 otosclerosis patients, 30 control group). Serum sex-hormone (estradiol, progesterone, prolactin and total testosterone) and GPER-1 levels were measured in otosclerosis patients and compared with the normal population. For the otosclerosis group, air conduction and bone conduction thresholds and air-bone gaps were viewed from audiograms and the relationships between hearing and GPER-1 or sex-hormone levels were also investigated. RESULTS Sex-hormone levels were not different between the groups. GPER-1 level was significantly lower in the otosclerosis group [3.1353 (0.76-8.21) ng/mL] than the control group [5.4773 (0.96-20.31) ng/mL] (p =0.017). Differential diagnosis with ROC analysis for the GPER-1 level was also significant (p=0.017). GPER-1 level was significantly lower for the females than the males in the otosclerosis group (p=0.043). Serum estradiol, progesterone, and prolactin levels were significantly higher (p=0.02, p =0.029 and p=0.019 respectively) and the GPER-1 level was significantly lower (p= 0.04) in the female patients compared to the female controls. There was no statistically significant relationship between GPER-1 or sex-hormone levels and hearing parameters. CONCLUSION GPER-1 level was lower in the otosclerosis patients compared to healthy volunteers and also lower in females than males in the patient group. Female sex-hormone levels were higher and GPER-1 level was lower in the female patient group than the female control group. Neither GPER-1 nor sex-hormone levels were not predictive of hearing levels. These findings indicate that sex-hormones especially estrogen and GPER-1 might have a potential role in the etiopathogenesis of otosclerosis. This is the first study in the literature that investigates the GPER-1 values in otosclerosis.
Collapse
Affiliation(s)
- Duygu Erdem
- Department of Otorhinolaryngology, Faculty of Medicine, Zonguldak Bülent Ecevit University, Zonguldak, Turkey.
| | - Sultan Şevik Eliçora
- Department of Otorhinolaryngology, Faculty of Medicine, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
| | - Berrak Güven
- Department of Medical Biochemistry, Faculty of Medicine, Zonguldak Bülent Ecevit University, Zonguldak, Turkey
| | - Aykut Erdem Dinç
- Department of Otorhinolaryngology, Ekol Hospitals, İzmir, Turkey
| |
Collapse
|
55
|
Machol K, Hadley TD, Schmidt J, Cuthbertson D, Traboulsi H, Silva RC, Citron C, Khan S, Citron K, Carter E, Brookler K, Shapiro JR, Steiner RD, Byers PH, Glorieux FH, Durigova M, Smith P, Bober MB, Sutton VR, Lee BH, Nagamani SCS, Raggio C. Hearing loss in individuals with osteogenesis imperfecta in North America: Results from a multicenter study. Am J Med Genet A 2020; 182:697-704. [PMID: 31876392 PMCID: PMC7385724 DOI: 10.1002/ajmg.a.61464] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 12/05/2019] [Indexed: 12/16/2022]
Abstract
Hearing loss (HL) is an extra-skeletal manifestation of the connective tissue disorder osteogenesis imperfecta (OI). Systematic evaluation of the prevalence and characteristics of HL in COL1A1/COL1A2-related OI will contribute to a better clinical management of individuals with OI. We collected and analyzed pure-tone audiometry data from 312 individuals with OI who were enrolled in the Linked Clinical Research Centers and the Brittle Bone Disorders Consortium. The prevalence, type, and severity of HL in COL1A1/COL1A2-related OI are reported. We show that the prevalence of HL in OI is 28% and increased with age in Type I OI but not in Types III and IV. Individuals with OI Types III and IV are at a higher risk to develop HL in the first decade of life when compared to OI Type I. We also show that the prevalence of SNHL is higher in females with OI compared to males. This study reveals new insights regarding prevalence of HL in OI including a lower general prevalence of HL in COL1A1/COL1A2-related OI than previously reported (28.3 vs. 65%) and high prevalence of SNHL in females. Our data support the need in early routine hearing evaluation in all types of OI that can be adjusted to the severity of the skeletal disease.
Collapse
Affiliation(s)
- Keren Machol
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Trevor D Hadley
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | - Jake Schmidt
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Henri Traboulsi
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Rodrigo C Silva
- Department of Otolaryngology-Head and Neck Surgery, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Chloe Citron
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Sobiah Khan
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Kate Citron
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Erin Carter
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Kenneth Brookler
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| | - Jay R Shapiro
- Department of Bone and Osteogenesis Imperfecta, Kennedy Krieger Institute, Baltimore, Maryland
- Department of Medicine at Uniformed Services, University of the Health Sciences, Bethesda, Maryland
| | - Robert D Steiner
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
- Pediatrics and Molecular and Medical Genetics, Oregon Health & Science University, Portland, Oregon
| | - Peter H Byers
- Department of Medicine, Division of Medical Genetics, University of Washington, Seattle
- Department of Pathology, Division of Medical Genetics, University of Washington, Seattle
| | - Francis H Glorieux
- Shriner's Hospital for Children and McGill University, Montreal, Quebec, Canada
| | - Michaela Durigova
- Shriner's Hospital for Children and McGill University, Montreal, Quebec, Canada
| | - Peter Smith
- Motion Analysis Laboratory, Shriners Hospitals for Children, Chicago, Illinois
| | - Michael B Bober
- Division of Orthogenetics, Alfred I. duPont Hospital for Children, Wilmington, Delaware
| | - Vernon R Sutton
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Brendan H Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Sandesh C S Nagamani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
- Texas Children's Hospital, Houston, Texas
| | - Cathleen Raggio
- Department of Pediatric Orthopedic Surgery, Hospital for Special Surgery, New York, New York
| |
Collapse
|
56
|
Arain Z, Abbas Y, Adams A. Pediatric otosyphilis—An unusual cause of conductive hearing loss. Radiol Case Rep 2020; 15:65-70. [PMID: 31737149 PMCID: PMC6849424 DOI: 10.1016/j.radcr.2019.09.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/29/2019] [Accepted: 09/30/2019] [Indexed: 11/01/2022] Open
Abstract
We present the case of a 5 year old female with a unilateral conductive hearing loss which had a relapsing and remitting course over a 3 year period. An initial noncontrast CT temporal bone study was unremarkable and a diagnosis of otitis media was made in the first instance. However, a second CT temporal bone study performed 3 years later demonstrated bilateral demineralisation of the ossicles and abnormal lucency affecting both the otic capsules. A diagnosis of otosyphilis was proposed on the basis of the imaging features and a prior medical history of previously treated congenital syphilis. With the benefit of hindsight, early pericochlear lucency was identified on the initial CT temporal bone study. There has been a steady rise of syphilis cases since the millennium with resurgence in many high income countries. Otosyphilis has a highly variable clinical presentation and there is limited data to establish the pattern of hearing loss in pediatric patients with a background of congenital otosyphilis. Temporal bone and otic capsule demineralisation carries a broad differential diagnosis including osteogenesis imperfecta, otosclerosis, Paget's disease and radiation related changes. Otosyphilis is a rare but potentially treatable cause of deafness and a high index of suspicion is required to make the diagnosis. In conjunction with a positive syphilis serology, a noncontrast temporal bone CT can aid the diagnosis and expedite the treatment.
Collapse
|
57
|
Wiatr A, Składzień J, Strek P, Wiatr M. Carhart Notch-A Prognostic Factor in Surgery for Otosclerosis. EAR, NOSE & THROAT JOURNAL 2019; 100:NP193-NP197. [PMID: 31558062 DOI: 10.1177/0145561319864571] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Otosclerosis is an underlying disease of the bony labyrinth. This disorder, occurring only within the area of a person's temporal bone, is characterized by a progressive hearing loss and tinnitus. MATERIAL AND METHODS The study looked for the answer to the question of whether the presence or absence of Carhart notch in the presurgical tonal audiogram affects the final outcome of the otosclerosis surgery. RESULTS The analysis included 140 patients operated on for the first time due to otosclerosis between 2010 and 2016. The study group consisted of 107 women aged from 19 to 62 (average age: 40.33) and 33 men aged 27 to 59 (average age: 38.23). Analysis showed a statistically better result of stapedotomy in patients without the notch than in the same procedure in patients with the notch present. The opposite situation occurred in the case of stapedectomy. CONCLUSION (1) The presence of a refraction of the bone conduction curve with a depth of 10 to 20 dB at a frequency of 2000 Hz (the so-called Carhart notch) in the presurgical tonal audiogram is an unfavorable prognostic factor in relation to closing the cochlear reserve and improving bone conduction after the stapedotomy. (2) Regardless of the presence or absence of Carhart notch in the presurgical tonal audiogram, stapedotomy is the procedure with the highest efficiency in the treatment of otosclerosis.
Collapse
Affiliation(s)
- Agnieszka Wiatr
- Department of Otolaryngology, 49573Jagiellonian University Medical College, Kraków, Poland
| | - Jacek Składzień
- Department of Otolaryngology, 49573Jagiellonian University Medical College, Kraków, Poland
| | - Pawel Strek
- Department of Otolaryngology, 49573Jagiellonian University Medical College, Kraków, Poland
| | - Maciej Wiatr
- Department of Otolaryngology, 49573Jagiellonian University Medical College, Kraków, Poland
| |
Collapse
|
58
|
Wichova H, Alvi S, Boatright C, Ledbetter L, Staecker H, Lin J. High-Resolution Computed Tomography of the Inner Ear: Effect of Otosclerosis on Cochlear Aqueduct Dimensions. Ann Otol Rhinol Laryngol 2019; 128:749-754. [PMID: 30971097 DOI: 10.1177/0003489419842579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The cochlear aqueduct is a bony duct connecting the scala tympani with the subarachnoid space. Given the pathophysiology of otosclerosis, including bone resorption and new bone deposition, we hypothesize that the cochlear aqueduct in otosclerotic ears is narrowed. METHODS A retrospective review of patients with otosclerosis who have undergone high-resolution computed tomography (HRCT) of the temporal bone was completed. The control cohort included 20 patients with the diagnosis of noise-induced hearing loss, without the diagnosis of otosclerosis. Uniform measurements of cochlear aqueduct dimensions were performed using the axial plane. RESULTS The otosclerosis cohort included 25 males and 52 females with mean age of 52.2 ± 17.6 years. The control group included 10 males and 10 females with mean age of 64.0 ± 18.5 years. The mean cochlear aqueduct length, width mid canal, aperture base, aperture widest diameter, and funnel diameter in millimeters were 12.19 ± 1.66, 0.68 ± 0.28, 4.21 ± 1.67, 3.23 ± 1.47, and 2.70 ± 1.05 in the ears with otosclerotic foci and 11.57 ± 1.66, 0.69 ± 0.29, 2.56 ± 1.59, 2.77 ± 1.67, and 2.58 ± 1.03 in control group, respectively. Statistical difference was seen in length of cochlear aqueduct, aperture base, and aperture widest diameters (P = .017, <.001, .007). CONCLUSIONS The length of the cochlear aqueduct and the funnel width are statistically longer in the otosclerotic population compared to control. The width of the cochlear aqueduct is not statistically different.
Collapse
Affiliation(s)
- Helena Wichova
- 1 Department of Otolaryngology, Head & Neck Surgery, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Sameer Alvi
- 1 Department of Otolaryngology, Head & Neck Surgery, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Christine Boatright
- 2 Department of Radiology, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Luke Ledbetter
- 2 Department of Radiology, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Hinrich Staecker
- 1 Department of Otolaryngology, Head & Neck Surgery, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - James Lin
- 1 Department of Otolaryngology, Head & Neck Surgery, The University of Kansas Medical Center, Kansas City, Kansas, USA
| |
Collapse
|
59
|
|
60
|
Arli C, Gulmez I, Saraç ET, Okuyucu Ş. Assessment of inflammatory markers in otosclerosis patients. Braz J Otorhinolaryngol 2019; 86:456-460. [PMID: 30926454 PMCID: PMC9422544 DOI: 10.1016/j.bjorl.2018.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 09/13/2018] [Accepted: 12/06/2018] [Indexed: 11/30/2022] Open
Abstract
Introduction Otosclerosis is an idiopathic disease characterized by new bone formation in foci of the human otic capsule. It is more common in Caucasian populations; affecting females twice as often as males. Its etiopathogenesis has not yet been fully elucidated. Objective The aim of this study was to investigate the relationship between otosclerosis and white blood cell and thrombocyte counts, mean platelet volume, neutrophil lymphocyte ratio, and the platelet lymphocyte ratio. Methods This retrospective case-control study was conducted in the outpatient clinic Mustafa Kemal University, in the department of otolaryngology, between 2015 and 2018. A total of 30 patients with an established diagnosis of otosclerosis were compared to a control group of 30 healthy subjects, matched for age, gender and body mass index. The white blood cell, thrombocyte, mean platelet volume, neutrophil lymphocyte ratio and platelet lymphocyte ratio values were calculated for all participants. Results There was no statistically significant difference between the groups with respect to age, gender, or body mass index, or for the mean neutrophil lymphocyte ratio, platelet lymphocyte ratio, white blood cell, or thrombocyte values (p > 0.05). A statistically significant difference was determined between the groups for the mean platelet volume values. The mean platelet volume values were lower in the otosclerotic patients (p = 0.047). Conclusion These results show that neutrophil lymphocyte ratio, platelet lymphocyte ratio, white blood cell and thrombocytes should not be used to predict otosclerosis, but suggest that mean platelet volume may be a negative predictive marker.
Collapse
Affiliation(s)
- Cengiz Arli
- Mustafa Kemal University, Medicine Faculty Antakya, Ear-Nose-Throat Department, Antakya, Turkey.
| | - Ihsan Gulmez
- Hatay State Hospital, Ear-Nose-Throat Department, Antakya, Turkey
| | - Elif Tuğba Saraç
- Mustafa Kemal University, Audiology Department, Medicine Faculty Antakya, Antakya, Turkey
| | - Şemsettin Okuyucu
- Mustafa Kemal University, Medicine Faculty Antakya, Ear-Nose-Throat Department, Antakya, Turkey
| |
Collapse
|
61
|
Wang F, Yoshida T, Shimono M, Sugimoto S, Teranishi M, Naganawa S, Sone M. Significance of internal auditory canal diverticula in ears with otosclerosis. Acta Otolaryngol 2018; 138:1066-1069. [PMID: 30682901 DOI: 10.1080/00016489.2018.1521526] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Diverticula in the internal auditory canal (IAC) have been reported in ears with otosclerosis. OBJECTIVE We evaluated hearing levels and vascular activity in ears with otosclerosis with and without IAC diverticula and clarify the significance of IAC diverticula. MATERIALS AND METHODS Sixty-one ears from 54 patients who underwent stapes surgery for otosclerosis [fenestral (48 ears) and retrofenestral (13 ears) groups] were included in the present study. Preoperative hearing levels on pure tone audiometry (PTA) and intraoperative measurements of blood flow were compared between the groups. RESULTS A total of 24 of 61 ears (39.3%) showed IAC diverticula, significantly higher than the frequency in ears without otosclerosis (3.7%). No significant differences in air- and bone-conduction thresholds on PTA were evident between ears with and without IAC diverticula in each group. Ears without IAC diverticula tended to show higher blood flow in the area anterior to the oval window than ears with IAC diverticula, but the difference was not significant. CONCLUSIONS The incidence of the IAC diverticula in otosclerosis was significantly higher than in cases without otosclerosis. The existence of IAC diverticula was not evidently related to the severity of the disease from the perspective of hearing level and vascular activity.
Collapse
Affiliation(s)
- Fei Wang
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Otorhinolaryngology, The First Affiliated Hospital of China Medical University, Otorhinolaryngology, Shenyang, China
| | - Tadao Yoshida
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mariko Shimono
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Satofumi Sugimoto
- Department of Otorhinolaryngology, Nagoya Univerisity Hospital, Nagoya, Japan
| | - Masaaki Teranishi
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinji Naganawa
- Department of Radiology, Nagoya University, Graduate School of Medicine, Nagoya, Japan
| | - Michihiko Sone
- Department of Otorhinolaryngology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
62
|
Abstract
Many bone dysplasias, some common and others rare, may involve the temporal bone causing conductive, sensorineural, or mixed hearing loss, vestibular dysfunction, or skull base foraminal narrowing, potentially affecting quality of life. Some conditions may affect only the temporal bone, whereas others may be more generalized, involving different regions of the body. High-resolution computed tomography may detect subtle osseous changes that can help define the type of dysplasia, and MR imaging can help define the degree of activity of lesions and potential associated complications.
Collapse
|