scholarly journals Resection of small acoustic neuroma using the transcanal transvestibular endoscopic approach

2021 ◽  
Vol 49 (12) ◽  
pp. 030006052110624
Author(s):  
Tao Chen ◽  
Zhenzhang Lu ◽  
Yuxiang Zhou ◽  
Duanlong Zhao ◽  
Yongtian Lu ◽  
...  
Keyword(s):  
Acoustic Neuroma ◽  
Severe Pain ◽  
Tumor Tissue ◽  
Residual Tumor ◽  
Functional Results ◽  
Endoscopic Approach ◽  
Acoustic Neuromas ◽  
Safe Technique ◽  
Postoperative Vertigo ◽  
Small Acoustic Neuroma

We evaluated the outcomes of resection of small acoustic neuromas using the transcanal transvestibular endoscopic approach. Two patients with a small acoustic neuroma were treated using this approach. The sizes of the tumors were 11 × 6 mm and 12 × 10 mm. Both tumors were removed completely without residual tumor tissue, and damage to the facial nerve and cochlear nerve was avoided. No patients developed postoperative vertigo, aggravation of postoperative facial paralysis, severe pain, or permanent postoperative complications. The patients were followed up for 6 months, and none developed recurrence. Resection of small acoustic neuromas by the transcanal transvestibular endoscopic approach is a simple and safe technique that achieves excellent functional results.

The Treatment Dilemma of Small Acoustic Neuroma and the Role of Hearing Preservation Surgery

Skull Base ◽  
2008 ◽  
Vol 18 (S 01) ◽  
Author(s):  
Francesco Biroli ◽  
Antonio Mazzoni ◽  
Camillo Foresti ◽  
Antonio Signorelli
Keyword(s):  
Acoustic Neuroma ◽  
Hearing Preservation ◽  
Small Acoustic Neuroma ◽  
Hearing Preservation Surgery

Use of 5-aminolevulinic acid in fluorescence-guided resection of meningioma with high risk of recurrence

2007 ◽  
Vol 106 (6) ◽  
pp. 1070-1074 ◽  
Author(s):  
Yoshinaga Kajimoto ◽  
Toshihiko Kuroiwa ◽  
Shin-Ichi Miyatake ◽  
Tsugumichi Ichioka ◽  
Minoru Miyashita ◽  
...  
Keyword(s):  
High Risk ◽  
Tumor Tissue ◽  
Aminolevulinic Acid ◽  
Superior Sagittal Sinus ◽  
Residual Tumor ◽  
Strong Fluorescence ◽  
Glioma Surgery ◽  
Risk Of Recurrence ◽  
Sagittal Sinus ◽  
Atypical Meningiomas

✓It has been established that fluorescence-guided resection using 5-aminolevulinic acid (5-ALA) is useful in glioma surgery. The authors report on a 65-year-old woman who had a huge atypical left-hemisphere meningioma, which extended into the skull and to the superior sagittal sinus and demonstrated fluorescence in response to administration of 5-ALA. After the tumor was removed, the operative field was observed under the fluorescent mode of a fluorescence surgical microscopy system. Several minute areas of residual tumor tissue were visualized as strong fluorescence behind the vein and sinus, in a part of the hypertrophic dura, and along the edge of the skull. These remnants were completely removed. The authors concluded that fluorescence-guided resection using 5-ALA is useful in cases of atypical meningiomas with a high risk of recurrence.

Acoustic Neuromas and the Acoustic Impedance of the Ear

1973 ◽  
Vol 38 (3) ◽  
pp. 345-353 ◽  
Author(s):  
J. H. Macrae
Keyword(s):  
Tympanic Membrane ◽  
Acoustic Neuroma ◽  
Acoustic Impedance ◽  
Theoretical Calculations ◽  
Low Frequencies ◽  
Cochlear Duct ◽  
Acoustic Neuromas ◽  
Affected Side ◽  
Contralateral Ear ◽  
Conductive System

The acoustic impedance at the tympanic membrane was measured at frequencies in the range 100–1000 Hz and found to be abnormal on the affected side in four patients with acoustic neuroma. In all four the resistance was abnormally high at low frequencies on the affected side, and in three the reactance of the affected ear was raised relative to that of the contralateral ear, particularly at low frequencies. The abnormality is attributed to an increase in the input acoustic impedance of the cochlea produced by the increase in protein content of the cochlear fluids and dilatation of the cochlear duct known to occur in acoustic neuroma. This explanation is supported by theoretical calculations carried out on an electric analogue of the conductive system, and it is suggested that similar abnormalities in the acoustic impedance at the tympanic membrane might occur in other pathologies which produce abnormal mechanical conditions in the cochlea.

Translabyrinthine Approach for Acoustic Neuroma

Neurosurgery ◽  
2004 ◽  
Vol 54 (2) ◽  
pp. 391-396 ◽  
Author(s):  
John Diaz Day ◽  
Douglas A. Chen ◽  
Moises Arriaga
Keyword(s):  
Surgical Treatment ◽  
Acoustic Neuroma ◽  
Cerebellopontine Angle ◽  
Hearing Preservation ◽  
Retrosigmoid Approach ◽  
The Past ◽  
Translabyrinthine Approach ◽  
Acoustic Neuromas

Abstract THE TRANSLABYRINTHINE APPROACH has been popularized during the past 30 years for the surgical treatment of acoustic neuromas. It serves as an alternative to the retrosigmoid approach in patients when hearing preservation is not a primary consideration. Patients with a tumor of any size may be treated by the translabyrinthine approach. The corridor of access to the cerebellopontine angle is shifted anteriorly in contrast to the retrosigmoid approach, resulting in minimized retraction of the cerebellum. Successful use of the approach relies on a number of technical nuances that are outlined in this article.

Vestibular disorders and impaired path integration along a linear trajectory

2000 ◽  
Vol 10 (1) ◽  
pp. 7-15 ◽  
Author(s):  
Helen S. Cohen
Keyword(s):  
Acoustic Neuroma ◽  
Vestibular Disorders ◽  
Vestibular Input ◽  
Active Motion ◽  
Eyes Closed ◽  
Acoustic Neuromas ◽  
Vestibular Information ◽  
Lateral Distance ◽  
Eyes Open ◽  
Straight Ahead

The goal of this study was to determine if people use vestibular information to keep track of their positions while walking through a simple course. Subjects were normals and patients with chronic peripheral vestibulopathies – each of whom were tested once – and patients with acoustic neuromas tested pre- operatively and one and three weeks post-operatively. Subjects walked over a straight course, 7.62 m, with their eyes open and then with their eyes closed. The time needed for task performance, the forward distance subjects walked before veering, and the lateral distance subjects veered from the straight ahead were recorded. The angle of veering was then calculated. Normals were able to perform this task easily with eyes open or closed. With eyes closed pre-operative acoustic neuroma subjects walked significantly shorter distances before veering than normals but did not veer significantly more than normals or take longer than normals to perform the task. Chronic vestibulopathy subjects, by contrast, were significantly impaired compared to normals on all measures. With eyes open within a week after acoustic neuroma resection subjects could perform the task as well as normals. With eyes closed, however, post-operative subjects were impaired compared to their own pre-operative levels, but they had returned to their pre-operative levels at the second post-operative test. Ataxia was only weakly correlated to any measures and tumor size was not related to performance. These findings support the hypothesis that vestibular input is used for spatial orientation during active motion.

Transmastoid extracranial repair of CSF leaks following acoustic neuroma resection

1989 ◽  
Vol 103 (9) ◽  
pp. 842-844 ◽  
Author(s):  
A. K. Robson ◽  
P. M. Clarke ◽  
M. Dilkes ◽  
A. R. Maw
Keyword(s):  
Cerebrospinal Fluid ◽  
Surgical Management ◽  
Acoustic Neuroma ◽  
Complete Resolution ◽  
Sternomastoid Muscle ◽  
Translabyrinthine Approach ◽  
Suboccipital Craniectomy ◽  
Acoustic Neuromas ◽  
Good Access ◽  
Csf Leaks

AbstractAcoustic neuromas may be resected either by a suboccipital craniectomy or translabyrinthine approach; the latter gives good access without unduly traumatising the brainstem, but can lead to a higher incidence of cerebrospinal fluid (CSF) leaks. The surgical management of these leaks can be difficult; we describe a transmastoid extracranial technique using pedicled sternomastoid muscle that has produced complete resolution of the leak in all cases managed in this way.

Some Observations in a Case of Acoustic Neuroma

1978 ◽  
Vol 43 (4) ◽  
pp. 459-466 ◽  
Author(s):  
Shlomo Silman ◽  
Stanley A. Gelfand ◽  
Tong Chun
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Acoustic Neuroma ◽  
Recent Theory ◽  
Acoustic Neuromas ◽  
Apparent Relationship ◽  
Stapedius Reflex ◽  
The Subject ◽  
Acoustic Tumor ◽  
Insight Into

The subject was a 47-year-old male with a moderate asymmetrical sensorineural hearing loss that initially presented cochlear signs except for positive stapedius reflex results. Over the course of only five weeks, he developed the audiological constellation of retrocochlear involvement. The retrocochlear results were confirmed by the removal of an acoustic tumor. The results highlight the importance of audiological monitoring and reflex measures in the identification of acoustic neuromas. Several observations provide insight into the apparent relationship between loudness and the stapedius reflex. The findings are discussed with reference to a proposed extension of Borg’s recent theory that elevated reflex thresholds and reflex decay reflect differing degrees of the eighth nerve destruction.

Sign in / Sign up

Export Citation Format

Share Document