Acoustic neuroma
نویسنده
چکیده
IMAGING FINDINGS Magnetic resonance imaging (MRI) of the brain showed a 1.5to 1.8-cm solid and cystic mass that enhances on T1 with contrast at the right cerebellopontine angle and extends into the internal auditory canal, abutting the cerebellum medially (Figure 1). On the day of treatment a stereolocalization MRI showed a mass in the right cerebellopontine angle extending into the right internal auditory canal with heterogeneous enhancement and cystic peripheral areas. Mass measured approximately 2.5 × 2.1 × 1.2 cm in craniocaudal (CC), transverse, and anteroposterior (AP) dimensions, respectively. There was mild mass effect on adjacent brainstem. Remainder of the cranial nerves were normal in course and caliber. (Figure 2)
منابع مشابه
Clinical significance of an increased cochlear 3D fluid-attenuated inversion recovery signal intensity on an MR imaging examination in patients with acoustic neuroma.
BACKGROUND AND PURPOSE The increased cochlear signal on FLAIR images in patients with acoustic neuroma is explained by an increased concentration of protein in the perilymphatic space. However, there is still debate whether there is a correlation between the increased cochlear FLAIR signal and the degree of hearing disturbance in patients with acoustic neuroma. Our aim was to investigate the cl...
متن کاملAcoustic neuroma presenting as sudden hearing loss.
Sudden hearing loss occurs as the initial symptom in 1 to 9 per cent of all acoustic neuromas. A case of an acoustic neuroma presenting with sudden hearing loss is described. In this case, the hearing thresholds returned to normal. To the authors' knowledge, this is the first case in which an acoustic neuroma presenting with sudden hearing loss exhibited a return to normal thresholds. This sugg...
متن کاملChanges in Gait Detected by Three-Dimensional Motion Analysis in Patients with Acoustic Neuroma
Many patients with acoustic neuroma experience hearing loss, tinnitus, and equilibrium disturbance. Gait studies performed using tactile sensors placed under the feet have indicated that an acoustic neuroma causes unstable gait, even though this cannot be detected by visual observation. Three-dimensional motion analysis is a useful tool to assess gait. The purpose of this study was to use a thr...
متن کاملPatient perception of comorbid conditions after acoustic neuroma management: survey results from the acoustic neuroma association.
OBJECTIVES/HYPOTHESIS Based on survey results of the Acoustic Neuroma Association, the patient ratings of the most difficult aspects of acoustic neuroma management were reported and a review of the literature was made regarding comorbid conditions associated with acoustic neuroma treatment and their impact on patient quality of life. STUDY DESIGN Cohort study of 1940 patients who were members...
متن کاملRisk Factors of Acoustic Neuroma: Systematic Review and Meta-Analysis
PURPOSE Many epidemiological studies have investigated environmental risk factors for the development of acoustic neuroma. However, these results are controversial. We conducted a meta-analysis of case-control studies to identify any potential relationship between history of noise exposure, smoking, allergic diseases, and risk of acoustic neuroma. MATERIALS AND METHODS We searched PubMed to i...
متن کاملRole of Tobacco Use in the Etiology of Acoustic Neuroma
Two previous studies suggest that cigarette smoking reduces acoustic neuroma risk; however, an association between use of snuff tobacco and acoustic neuroma has not been investigated previously. The authors conducted a case-control study in Sweden from 2002 to 2007, in which 451 cases and 710 population-based controls completed questionnaires. Cases and controls were matched on gender, region, ...
متن کامل