INTRODUCTION To reduce incidence of residual cholesteatoma following ear surgery; and to reduce the need for second look "open" mastoidectomy using endoscopic mastoidotomy. Ten-year retrospective chart review of 249 primary cholesteatoma cases (1994-2004) with a minimum follow-up of two years. The first objective was to evaluate the effectiveness of otoendoscopy in reducing the incidence of "ch...

We present a very rare case of a 29-month-old boy with acute onset right abducens nerve palsy complicated by inferior petrosal sinus septic thrombosis due to mastoiditis without petrous apicitis. Four months after mastoidectomy, the patient fully recovered from an esotropia of 30 prism diopters and an abduction limitation (-4) in his right eye.

Objective: To observe the clinical manifestations, imaging features of a case of a patient with cholesteatomatous otitis media complicated with suppurative meningitis and venous sinus thrombosis and to explore the treatment method and prognosis. Method: The medical history of the patient and the data of physical examinations, imaging examinations and laboratory examinations were collected. Resu...

To date, clinical application of image-guided surgery (IGS) to otology/neurotology has been limited, but a large potential market and numerous applications support use. Such applications include control of surgical instruments (eg, turning off a drill when close to an anatomic boundary), robotic surgery (eg, robotic mastoidectomy), and minimally invasive surgery (eg, percutaneous cochlear impla...

We report the case of a 38-yr-old man who presented for an emergency mastoidectomy and suffered from severe upper airways obstruction in the postoperative period. Subsequent questioning revealed a history of heroic snoring and further investigations proved a diagnosis of obstructive sleep apnoea.

OBJECTIVES/HYPOTHESIS To review long-term hearing results after intact canal wall mastoidectomy with tympanoplasty for treatment of cholesteatoma and to identify factors associated with improved hearing outcomes. STUDY DESIGN A retrospective analysis of all cases of cholesteatoma treated with intact canal wall mastoidectomy at a single institution by the senior author over a period of 9 years...

Robots have been shown to be useful in assisting surgeons in a variety of bone drilling and milling procedures. Examples include commercial systems for joint repair or replacement surgeries, with in vitro feasibility recently shown for mastoidectomy. Typically, the robot is guided along a path planned on a CT image that has been registered to the physical anatomy in the operating room, which is...

OBJECTIVES/HYPOTHESIS Cognitive load theory states that working memory is limited. This has implications for learning and suggests that reducing cognitive load (CL) could promote learning and skills acquisition. This study aims to explore the effect of repeated practice and simulator-integrated tutoring on CL in virtual reality (VR) mastoidectomy simulation. STUDY DESIGN Prospective trial. ...

OBJECTIVE To investigate a correlation between preoperative non-echo planar diffusion-weighted magnetic resonance imaging (non-EPI DW MRI) with surgical findings of localization and extension of cholesteatoma and to develop criteria for surgical planning. PATIENTS Preoperative non-EPI DWMRI was available and positive for cholesteatoma in 27 patients with primary and 23 with residual/recurrent...

The epithelioid variant of malignant peripheral nerve sheath tumours is a rare histological entity, and the occurrence of a malignant peripheral nerve sheath tumour in the skull base is even more unusual. We report a case of a 52-year-old man who presented with reduced hearing in the left ear, giddiness and left-sided facial weakness of short duration. He was a known hypertensive. On examinatio...