Temporal Bone Surgery for Encephaloceles, Superior Semicircular Canal Dehiscence, Neoplasia, and Lesions of the Petrous Apex

2016 ◽  
pp. 221-262
Author(s):  
John S. Oghalai ◽  
Colin L. W. Driscoll
Keyword(s):  
Temporal Bone ◽  
Semicircular Canal ◽  
Petrous Apex ◽  
Superior Semicircular Canal Dehiscence ◽  
Bone Surgery ◽  
Superior Semicircular Canal ◽  
Temporal Bone Surgery ◽  
Canal Dehiscence

scholarly journals Temporal bone anatomy characteristics in superior semicircular canal dehiscence

2017 ◽  
Vol 12 (4) ◽  
pp. 185-191 ◽  
Author(s):  
Marrigje A. de Jong ◽  
David J. Carpenter ◽  
David M. Kaylie ◽  
Erin G. Piker ◽  
Dennis O. Frank-Ito
Keyword(s):  
Temporal Bone ◽  
Semicircular Canal ◽  
Superior Semicircular Canal Dehiscence ◽  
Superior Semicircular Canal ◽  
Temporal Bone Anatomy ◽  
Canal Dehiscence

SUPERIOR SEMICIRCULAR CANAL DEHISCENCE SYNDROME: SUCCESSFUL TREATMENT WITH REPAIR OF THE MIDDLE FOSSA FLOOR

Neurosurgery ◽  
2008 ◽  
Vol 63 (6) ◽  
pp. E1207-E1208 ◽  
Author(s):  
Eric C. Peterson ◽  
Daniel A. Lazar ◽  
Andrew N. Nemecek ◽  
Larry Duckert ◽  
Robert Rostomily
Keyword(s):  
High Resolution ◽  
Temporal Bone ◽  
Successful Treatment ◽  
Semicircular Canal ◽  
Middle Fossa ◽  
Blurred Vision ◽  
Superior Semicircular Canal Dehiscence ◽  
Computed Tomographic ◽  
Superior Semicircular Canal ◽  
Canal Dehiscence

Abstract OBJECTIVE Superior semicircular canal dehiscence syndrome has recently been reported as a cause of pressure- or sound-induced oscillopsia (Tullio phenomenon). We report the presentation and successful treatment of 3 patients with superior semicircular dehiscence syndrome by a joint neurosurgical/neuro-otology team. CLINICAL PRESENTATION Patient 1 is a 37-year-old man who presented with complaints of disequilibrium, fullness in the left ear, hearing loss, and oscillopsia when pressure was applied to the left external auditory canal. Patient 2 is a 46-year-old man who presented with complaints of disequilibrium, fullness in the left ear, and blurred vision associated with heavy lifting or straining. On examination, pneumatic otoscopy produced a sense of motion. Patient 3 is a 29-year-old woman who presented with chronic disequilibrium that resulted in frequent falls. She had a positive fistula test on the left, and vertical nystagmus was elicited when pressure was applied to the left ear. In each patient, high-resolution computed tomographic scanning through the temporal bone revealed dehiscence of the superior semicircular canal on the symptomatic side. INTERVENTION In all 3 cases, a subtemporal, extradural approach was performed with repair of the middle fossa floor using calcium phosphate BoneSource (Howmedica Leibinger, Inc., Dallas, TX). All patients recovered well, with resolution of their symptoms. CONCLUSION Superior semicircular canal dehiscence syndrome is a cause of disequilibrium associated with sound or pressure stimuli. The workup includes a detailed history, electronystagmography including Valsalva maneuvers, and a high-resolution computed tomographic scan though the temporal bone. An extradural repair of the middle fossa floor with BoneSource can successfully treat this condition.

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