Middle Ear Diseases

Mansour, Salah; Magnan, Jacques; Nicolas, Karen; Haidar, Hassan

doi:10.1007/978-3-319-72962-6

Cited by 19 publications

(13 citation statements)

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“…In acute infections, myringotomy is usually the first step, followed by antromastoidectomy in patients without clinical improvement. In chronic diseases, urgent mastoidectomy with the removal of granulation tissue or cholesteatoma is almost always advocated [ 10 ]. In all of our patients, middle ear was opened and granulation tissue was found along facial nerve bony canal.…”

Section: Discussionmentioning

confidence: 99%

“…The oligosymptomatic nature of the complication, often accompanied by other intracranial pathologies, causes great diagnostic difficulties. In the pathogenesis of this insidious clinical entity, the aditus ad antrum is often blocked by inflammatory mucosa, granulation tissue, or cholesteatoma [ 10 ]. Symptoms caused by persistent inflammation in mastoid air cells include pain localized deep in middle ear and retroauricular region, conductive hearing loss, and recurrent fever episodes.…”

Section: Introductionmentioning

confidence: 99%

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Facial nerve paresis in the course of masked mastoiditis as a revelator of GPA

Marszał

Bartochowska

et al. 2021

Eur Arch Otorhinolaryngol

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Purpose The aim of this study was to present a series of 6 patients with facial nerve palsy and masked mastoiditis which constituted as revelators of localized granulomatosis with polyangiitis (GPA) and to evaluate the utility of the ACR/EULAR 2017 provisional classification criteria for GPA in such cases. Methods Study group included 58 patients with GPA. Cases with facial nerve palsy and masked mastoiditis were thoroughly analyzed. Results The mean age of patients was 37 years. All manifested unilateral facial nerve palsy and hearing loss, while only 2 reported aural complaints suggesting inflammatory cause of the disease. All cases were qualified for surgical intervention. Intraoperative findings were similar: granulation tissue in tympanic cavity and/or pneumatic spaces of the mastoid process. Only 50% of histopathological results suggested vasculitis. In all cases, elevated levels of antineutrophil cytoplasmic antibodies (ANCA) against peroxidase 3 (PR3-ANCA) were determined. Two patients presented rapid progression of the disease and died within 1 week and 2 months, respectively. Four other patients manifested gradual improvement of hearing and facial nerve function after treatment. Conclusion GPA should be included into differential diagnosis in all cases of persistent facial nerve palsy especially when otological symptoms coexist. Even localized GPA could be very aggressive, revelating generalized form of the disease. Rapid systemic treatment of GPA can protect hearing and facial nerve from permanent severe dysfunction. The ACR/EULAR 2017 provisional classification criteria for GPA seem to be valuable tool in diagnosing ENT patients with localized otological form of the disease.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facial nerve paresis in the course of masked mastoiditis as a revelator of GPA

Marszał

Bartochowska

et al. 2021

Eur Arch Otorhinolaryngol

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“…Since the reverse stimulation is used for treating conductive or mixed hearing loss, the inefficient coupling’s influence in the ear with middle-ear disorder was also investigated by simulating two typical forms of middle-ear disorder: otosclerosis and ossicular chain disarticulation. 19,41 Otosclerosis prevents sound energy into the inner ear, and its typical physiological changes are the hardening of the stapedial annular ligament and the increase in the stapes mass. Hardening of the stapedial annular ligament was simulated by changing its stiffness to 10 times or 100 times the normal value.…”

Section: Methodsmentioning

confidence: 99%

“…19,43 Trauma, otitis media, and middle ear deformities cause the ossicular chain disarticulation, and the most common type is the interruption of the incus long process. 18,41 In the circuit model, the disarticulation of ossicles is always simulated by a short circuit. However, the incus long process is part of the incus, and its removal does not simulate a short circuit.…”

Section: Methodsmentioning

confidence: 99%

Research on coupling effects of actuator and round window membrane on reverse stimulation of human cochlea

Xue

Liu

Yang

et al. 2021

Proc Inst Mech Eng H

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An active actuator of a middle-ear implant coupled to the round window membrane (RWM), which transmits vibration to the cochlea, has been used to compensate for hearing loss in patients. However, various factors affect the coupling condition between the actuator and the RWM, resulting in coupling leakage. In this study, a coupling impedance model of the human ear and the actuator was used to investigate the effect of inefficient coupling during reverse stimulation. First, the three-port circuit network model of the actuator was coupled with the acoustic impedance model of human ear reverse sound transmission. Meanwhile, the inefficient coupling impedance was estimated. Then, the effect of the actuator’s coupling on reverse stimulation was studied by comparing the reverse pressure transfer function. Furthermore, the inefficient coupling’s influence in the ear with middle-ear disorder was also investigated by simulating two typical forms of middle-ear disorder: otosclerosis and ossicular chain disarticulation. The results show that the change of the inefficient coupling impedance plays a significant role during reverse stimulation. Inefficient coupling of the actuator and the RWM deteriorates the cochlear response of reverse stimulation over the entire frequency range. Additionally, the coupling effect of the actuator does not change the influence tendency of middle-ear disorder on reverse stimulation’s performance, but changes the response amplitude of the reverse stimulation.

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“…Non-EPI DW MRI can distinguish cholesteatoma from other tissues asgranulation tissue and mucosal reactions in the middle ear and mastoid. One of the greatest challenges in the past decade has been the question whether MRI could replace second look surgery (7,8) . The aim of the current work was to solve the problem of residual cholesteatoma and decrease the problem of large mastoid cavities and to increase the learning curve of endoscopic ear surgery.…”

Section: Introductionmentioning

confidence: 99%

Endoscopic Versus Microscopic Canal Wall Up Surgery for Cholesteatoma: A Diffusion-Weighted Magnetic Resonance Imaging Post-Operative Study

Mobashir¹,

Ali²,

Hassan³

et al. 2021

The Egyptian Journal of Hospital Medicine

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Background: Cholesteatoma is a surgical disease for which the primary universally accepted goal is total eradication of cholesteatoma to obtain a safe and dry ear. The second objective is restoration or maintaining the hearing. Objective: This study was aimed to solve the problem of residual cholesteatoma and decrease the problem of large mastoid cavities and to increase the learning curve of endoscopic ear surgery. Patients and Methods: non-randomized controlled trial study performed in Otolaryngology, Head and Neck Surgery Departments, Zagazig University Hospitals in the period from February 2018 to February 2021 on 30 patients suffering from middle ear cholesteatoma. Otoendoscopic evaluation were used for detection of the presence of attic perforation, posterosuperior perforation, aural polyps and, whitish shadow behind intact tympanic membrane. All patients were operated under general anesthesia with controlled hypotensive technique. Results: After 1 year of follow-up in 15 patients using endoscopic approach and 15 patients using microscopic approach, the recidivistic cholesteatoma was found in 6.7% in endoscopic group while it was 20% in microscopic group. Conclusions: It could be concluded that the use of an endoscope provided important benefits to patients with middle ear cholesteatoma and offer superior visualization than microscope.

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Middle Ear Diseases

Cited by 19 publications

References 0 publications

Facial nerve paresis in the course of masked mastoiditis as a revelator of GPA

Facial nerve paresis in the course of masked mastoiditis as a revelator of GPA

Research on coupling effects of actuator and round window membrane on reverse stimulation of human cochlea

Endoscopic Versus Microscopic Canal Wall Up Surgery for Cholesteatoma: A Diffusion-Weighted Magnetic Resonance Imaging Post-Operative Study

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