scholarly journals Angioleiomyoma of the Internal Auditory Meatus: A Rare Occurrence in the Internal Auditory Canal

2005 ◽  
Vol 84 (4) ◽  
pp. 216-218 ◽  
Author(s):  
Yakubu G. Karagama ◽  
Lindsey R. Bridges ◽  
Philip T. van Hille
Keyword(s):  
Acoustic Neuroma ◽  
Internal Auditory Canal ◽  
Rare Occurrence ◽  
Review Of The Literature ◽  
Internal Auditory Meatus ◽  
Small Tumor

We describe a case of angioleiomyoma of the internal auditory meatus. A finding of this tumor at this site is very unusual. In fact, our review of the literature revealed that only 1 case has been previously reported. In our patient, the tumor was clinically and radiologically difficult to distinguish from an acoustic neuroma. It would be important to recognize this rare small tumor preoperatively because it may be appropriate to manage it conservatively.

Asymmetry of the Internal Auditory Canals without Acoustic Neuroma

1978 ◽  
Vol 87 (6) ◽  
pp. 815-820 ◽  
Author(s):  
Kenneth D. Dolan ◽  
Richard W. Babin ◽  
Charles G. Jacoby
Keyword(s):  
Posterior Fossa ◽  
Acoustic Neuroma ◽  
Cerebellopontine Angle ◽  
Clinical Presentation ◽  
Internal Auditory Canal ◽  
Internal Auditory Meatus ◽  
Radiographic Appearance ◽  
The Past ◽  
Acoustic Neuromas ◽  
Normal Architecture

During the past five years, nine patients with “significant” unilateral enlargement of one internal auditory canal by polytomography were subsequently found to have freely filling canals on contrast posterior fossa myelography. The radiographic appearance of the enlarged canals varied greatly and included all the various configurations usually suggestive of acoustic neuroma. Likewise, the clinical presentation varied greatly from asymptomatic to highly suggestive of cerebellopontine angle tumor. This series underscores the essential nature of posterior fossa studies in the evaluation of potential acoustic neuromas and the variability of the normal architecture of the internal auditory meatus.

scholarly journals Distal Mycotic Aneurysm of the AICA Mimicking Intracanalicular Acoustic Neuroma

2003 ◽  
Vol 30 (4) ◽  
pp. 388-392 ◽  
Author(s):  
Salvatore DiMaio ◽  
Gérard Mohr ◽  
Jean-Jacques Dufour ◽  
Steffan Albrecht
Keyword(s):  
Acoustic Neuroma ◽  
Internal Auditory Canal ◽  
Vascular Lesions ◽  
Pathological Examination ◽  
Anterior Inferior Cerebellar Artery ◽  
Review Of The Literature ◽  
Intraluminal Thrombus ◽  
Recent Onset ◽  
Cerebellar Artery ◽  
Pathophysiologic Mechanisms

Background:Among cases of cerebellopontine angle lesions, vascular lesions involving the internal auditory canal are extremely rare. We report a distal fusiform mycotic pseudoaneurysm of the anterior inferior cerebellar artery (AICA) that simulated an acoustic neuroma on presentation.Methods:A 60-year-old woman was investigated for recent onset of acute dizziness. Laboratory and radiographic investigations are presented, as well as the surgical management of the patient and pathological examination of the aneurysm.Conclusion:An exceptionally rare case of distal mycotic intracanalicular pseudoaneurysm of the AICA with intraluminal thrombus and fusiform anatomy is described. In our review of the literature (1966-present), only five other intracanalicular AICA-aneurysms were encountered, none of which were infectious in etiology. The possible pathophysiologic mechanisms of distal AICA-aneurysms are discussed along with the currently available literature.

Lipomas of the Internal Auditory Canal - Report of Two Cases and Review of the Literature

2004 ◽  
Vol 65 (02) ◽  
pp. 88-94 ◽  
Author(s):  
V. Braun ◽  
T. Kretschmer ◽  
C. Sommer ◽  
W. Schachenmayr ◽  
H.-P. Richter
Keyword(s):  
Internal Auditory Canal ◽  
Review Of The Literature

Facial Nerve Dissection by use of Acoustic (Loudspeaker) Facial EMG Monitoring

1986 ◽  
Vol 95 (4) ◽  
pp. 458-463 ◽  
Author(s):  
Sam E. Kinney ◽  
Richard Prass
Keyword(s):  
Facial Nerve ◽  
Acoustic Neuroma ◽  
Internal Auditory Canal ◽  
Subsequent Development ◽  
Lateral Approach ◽  
Nerve Function ◽  
Facial Nerve Function ◽  
Facial Emg ◽  
Acoustic Neuroma Surgery ◽  
Total Tumor Removal

The development of the surgical microscope in 1953, and the subsequent development of microsurgical instrumentation, signaled the beginning of modern-day acoustic neuroma surgery. Preservation of facial nerve function and total tumor removal is the goal of all acoustic neuroma surgery. The refinement of the translabyrinthine removal of acoustic neuromas by Dr. William House’ significantly improved preservation of facial nerve function. This is made possible by the anatomic identification of the facial nerve at the lateral end of the internal auditory canal. When the surgery is accomplished from a suboccipital or retrosigmoid approach, the facial nerve may be identified at the brain stem or within the internal auditory canal. Identifying the facial nerve from the posterior approach is not as anatomically precise as from the lateral approach through the labyrinth. The use of a facial nerve stimulator can greatly facilitate Identification of the facial nerve in these procedures.

Squamous Differentiation in a Sarcomatoid Chromophobe Renal Cell Carcinoma: An Unusual Case Report With Review of the Literature

2008 ◽  
Vol 132 (10) ◽  
pp. 1672-1674
Author(s):  
Seethalakshmi Viswanathan ◽  
Sangeeta B. Desai ◽  
S. R. Prabhu ◽  
Mahul B. Amin
Keyword(s):  
Renal Cell Carcinoma ◽  
Case Report ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Unusual Case ◽  
Chromophobe Renal Cell Carcinoma ◽  
Rare Occurrence ◽  
Review Of The Literature ◽  
Squamous Differentiation ◽  
Unusual Case Report

Abstract We describe an extremely rare occurrence of a squamous differentiation in a sarcomatoid chromophobe renal cell carcinoma in a 45-year-old woman with nodal and lung metastasis at presentation. The tumor on histology showed all 3 components intimately admixed with each other, which to the best of our knowledge is the first such case to be reported in the literature. The renal pelvis was smooth walled and uninvolved. Kidney-specific cadherin was positive in the chromophobe renal cell carcinoma areas and negative in the sarcomatoid and squamous areas.

Idiopathic Bilateral Auricular Ossificans: A Case Report and Review of the Literature

2004 ◽  
Vol 128 (12) ◽  
pp. 1432-1434 ◽  
Author(s):  
Whitney A. High ◽  
Matthew J. Larson ◽  
Mai P. Hoang
Keyword(s):  
Radiographic Examination ◽  
Ectopic Calcification ◽  
Rare Occurrence ◽  
Review Of The Literature ◽  
Routine Testing ◽  
Elastic Cartilage ◽  
Addison Disease ◽  
Pathologic Findings ◽  
History Of ◽  
The Right

Abstract Petrification of the auricle results in a rigid and immalleable ear. The etiology of such a finding is usually ectopic calcification. The condition has been associated with injurious processes, such as cold injury, and with various endocrinopathies, including Addison disease. In a significant number of cases, ossification occurs without knowledge of the precipitating cause or event. True auricular ossification is a rare occurrence, with only 12 histologically confirmed cases in the literature. We herein present the clinical and pathologic findings of another case. A 60-year-old man with diet-controlled diabetes presented with a 10-year history of slowly and insidiously stiffened auricles. He denied any precipitating historical events. Routine testing did not demonstrate systemic abnormalities. Radiographic examination revealed opacities consistent with bony structure in the auricles of the ears, with the right more prominent than the left. Histologic sampling demonstrated ossification with deposition of trabecular bone in proximity to normal elastic cartilage.

Hand-Held Thulium Laser Fiber and Ultrasonic Aspirator for Opening the Internal Auditory Canal During Acoustic Neuroma Microneurosurgery: Operative Technique

2019 ◽  
Vol 126 ◽  
pp. 497
Author(s):  
Luciano Mastronardi ◽  
Francesco Corrivetti ◽  
Carlo Giacobbo Scavo ◽  
Raffaelino Roperto ◽  
Guglielmo Cacciotti ◽  
...  
Keyword(s):  
Acoustic Neuroma ◽  
Operative Technique ◽  
Internal Auditory Canal ◽  
Thulium Laser ◽  
Ultrasonic Aspirator ◽  
Laser Fiber

Internal Auditory Canal Osteoma: Case Report and Review of the Literature

2015 ◽  
Vol 94 (6) ◽  
pp. E23-E25 ◽  
Author(s):  
Sharon Ovnat Tamir ◽  
Francoise Cyna-Gorse ◽  
Olivier Sterkers
Keyword(s):  
Case Report ◽  
Internal Auditory Canal ◽  
Review Of The Literature
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