INTRODUCTION In children, hypoacusis, or conductive hearing loss, is usually acquired; otitis media with effusion is the most common etiology. However, in some cases this condition is congenital, ranging from deformities of the external and middle ear to isolated ossicular chain malformations. The non-ossicular anomalies of the middle ear, for instance, persistent stapedial artery and anomaly o...

OBJECTIVE To describe the audiometric results after stapes surgery in a consecutive series of patients with stapes footplate ankylosis combined with another ossicular middle ear anomaly. STUDY DESIGN A retrospective analysis of charts collected between 1986 and 2001. SETTING A tertiary referral center. PATIENTS A total of 25 patients (30 ears) underwent exploratory tympanotomies and ossic...

OBJECTIVE To develop a staging system for congenital cholesteatoma in predicting the likelihood of residual disease. DESIGN Retrospective analysis of data from a case series, to identify predictors of residual disease. SETTING Tertiary care pediatric hospital. PARTICIPANTS Children undergoing surgical removal of congenital cholesteatoma. There were 156 patients, with 160 cholesteatomas; 4...

BACKGROUND We aimed to evaluate the clinical and imaging presentations of Langerhans cell histiocytosis (LCH) in the pediatric temporal bone. METHODS This retrospective study included 27 pediatric cases with pathological confirmed LCH of the temporal bone. The clinical and imaging features of the cases were analyzed. The involvement of ossicular chain and otic capsule was also evaluated. RE...

OBJECTIVE: This study aims to analyze factors influencing the recurrence of acquired pediatric cholesteatoma that has impact on operative plan decision. PATIENTS AND METHODS: Retrospective review of 62 children (68 ears) with acquired middle ear cholesteatoma who underwent surgery from 1995 to 2006. Age distribution at initial operation ranged from 3 to 16 years with mean age of 11.2 years. Sur...

UNLABELLED Hearing loss is a common functional disorder after trauma, and radiologists should be aware of the ossicular, labyrinthine or brain lesions that may be responsible. After a trauma, use of a systematic approach to explore the main functional components of auditory pathways is essential. Conductive hearing loss is caused by the disruption of the conductive chain, which may be due to os...

OBJECTIVES/HYPOTHESIS A piezoelectric sensor, floating piezoelectric microphone, driven by acoustic vibration of the ossicles, is one possible design for a microphone for a totally implantable cochlear implant. The purpose of the article was to study the frequency response of the floating piezoelectric microphone and to identify the ideal feasible position in the ossicular chain. STUDY DESIGN...

OBJECTIVE To report hearing results using a titanium ossicular replacement prosthesis during canal wall down mastoidectomy with tympanoplasty to treat cholesteatoma. DESIGN Retrospective medical record review. SETTING Referral university hospital. PATIENTS Patients with cholesteatoma treated with primary or revision canal wall down mastoidectomy with tympanoplasty in a single stage. Patie...