Arachnoid granulations of middle cranial fossa: a population study between cadaveric dissection and in vivo computed tomography examination

2010 ◽  
Vol 33 (3) ◽  
pp. 215-221 ◽  
Author(s):  
Feng Chen ◽  
Xue-fei Deng ◽  
Bin Liu ◽  
Li-na Zou ◽  
De-bin Wang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Population Study ◽  
Middle Cranial Fossa ◽  
Arachnoid Granulations ◽  
Cadaveric Dissection ◽  
Cranial Fossa

scholarly journals Arachnoid granulations of the middle cranial fossa

2010 ◽  
Vol 33 (3) ◽  
pp. 289-289
Author(s):  
R. Shane Tubbs ◽  
Marios Loukas
Keyword(s):  
Middle Cranial Fossa ◽  
Arachnoid Granulations ◽  
Cranial Fossa

scholarly journals Extensions of the Sphenoid Sinus

Neurosurgery ◽  
2010 ◽  
Vol 66 (4) ◽  
pp. 797-816 ◽  
Author(s):  
Jian Wang ◽  
Sharatchandra Bidari ◽  
Kohei Inoue ◽  
Hong Yang ◽  
Albert Rhoton
Keyword(s):  
Computed Tomography ◽  
Sphenoid Sinus ◽  
Middle Cranial Fossa ◽  
Cranial Base ◽  
Sellar Region ◽  
Computed Tomography Images ◽  
Suprasellar Region ◽  
Cranial Fossa ◽  
Minimally Invasive Access ◽  
Selection Of

Abstract OBJECTIVE The transsphenoidal approach has been extended in recent years from tumors of the sellar region to lesions involving other areas bordering the sphenoid sinus including the cavernous sinus, Meckel's cave, middle cranial fossa, planum sphenoidal, suprasellar region, and clivus. The goal of this study was to examine various pneumatized extensions of the sphenoid sinus that may facilitate extended approaches directed through the sinus. METHODS The sphenoid sinus and its surrounding structures were examined in 18 cadaver heads, and the results were correlated with the findings from 100 computed tomography images of the sinus. The sellar type of the sphenoid sinus in which the pneumatization extended beyond the anterior sellar wall was further classified according to the various extensions of the sinus. METHODS The sphenoid sinus and its surrounding structures were examined in 18 cadaver heads, and the results were correlated with the findings from 100 computed tomography images of the sinus. The sellar type of the sphenoid sinus in which the pneumatization extended beyond the anterior sellar wall was further classified according to the various extensions of the sinus. RESULTS The sellar type of the sphenoid sinus was classified into the following 6 basic types based on the direction of pneumatization: sphenoid body, lateral, clival, lesser wing, anterior, and combined. The recesses and prominences, formed by pneumatization of the sinus, act as “windows” opening from the sinus in different areas of the cranial base and may facilitate minimally invasive access to lesions in the corresponding areas. CONCLUSION The variations in the extensions of pneumatization of the sphenoid sinus may facilitate entry into areas bordering the sphenoid sinus and play a role in the selection of a surgical approach to lesions bordering the sinus.

The Relationship Between the Zygomatic Arch and the Floor of the Middle Cranial Fossa

2010 ◽  
Vol 66 (suppl_2) ◽  
pp. ons363-ons369 ◽  
Author(s):  
Hayan Dayoub ◽  
William B. Schueler ◽  
Hakeem Shakir ◽  
Kristopher T. Kimmell ◽  
Eric H. Sincoff
Keyword(s):  
Computed Tomography ◽  
Muscle Thickness ◽  
Middle Cranial Fossa ◽  
Cranial Base ◽  
Zygomatic Arch ◽  
P Value ◽  
Temporalis Muscle ◽  
Computed Tomography Scans ◽  
Cranial Fossa ◽  
Vertical Height

Abstract OBJECTIVE Access to the floor of the middle cranial fossa (MCF) is often required for approaches to cranial base lesions. This study measures the craniocaudal distance between the zygomatic arch (ZA) and the floor of the MCF from a random sample of high-resolution computed tomography scans of the cranial base. Methods Forty computed tomography scans were imported into an OsiriX station and reconstructed in multiple planes. The most caudal point of the MCF was determined in each computed tomography scan. The distances between that point and the root of the zygoma and the middle point of the ZA were calculated. The thickness of the temporalis muscle and the vertical height of the zygoma were also calculated. A 2-tailed, paired Student t test was used to compare right and left measurements with a 95% confidence interval and P value <.05 as statistically significant. RESULTS The foramen ovale was consistently the lowest point of the MCF. The average root-to-floor measurement was 5.05 ± 0.42 mm above the floor of the MCF and distance of the mid-zygoma to the floor was 1.94 ± 0.61 mm above the floor of MCF. The average temporalis muscle thickness and vertical height of the ZA were 22.22 ± 0.36 mm and 8.10 ± 0.13 mm, respectively. The muscle-to-floor measurement (muscle thickness + mid-zygoma-to-floor measurement) was 24.16 ± 0.74 mm. Conclusion The routine use of a zygomatic osteotomy in approaches to the MCF does not provide very much increased exposure. However, in patients with exceptionally thick temporalis muscles or a high ZA, a zygomatic osteotomy may be helpful in providing exposure of the floor of the MCF.

Use of Reconstructed Sagittal Computed Tomography Images to Plan Middle Cranial Fossa Surgery

2001 ◽  
Vol 111 (12) ◽  
pp. 2095-2099
Author(s):  
Krista L. Olson ◽  
Spiros Manolidis ◽  
L. Anne Hayman ◽  
Ling-Ling Chan ◽  
Katherine H. Taber
Keyword(s):  
Computed Tomography ◽  
Middle Cranial Fossa ◽  
Computed Tomography Images ◽  
Cranial Fossa ◽  
Middle Cranial Fossa Surgery

Latent superior canal dehiscence syndrome unmasked by stapedotomy for otosclerosis

2009 ◽  
Vol 124 (4) ◽  
pp. 428-430 ◽  
Author(s):  
A Hope ◽  
P Fagan
Keyword(s):  
Computed Tomography ◽  
Middle Cranial Fossa ◽  
Oval Window ◽  
Stapes Surgery ◽  
Vestibular Evoked Myogenic Potentials ◽  
Vestibular Evoked Myogenic Potential ◽  
High Resolution Computed Tomography ◽  
Superior Canal Dehiscence ◽  
Cranial Fossa ◽  
Canal Dehiscence

AbstractObjective:This report describes a novel case in which superior canal dehiscence syndrome was unmasked by successful stapes surgery for otosclerosis.Methods:Case report and literature review regarding superior canal dehiscence syndrome.Introduction:Superior canal dehiscence syndrome is a rare but well described condition in which audiovestibular symptoms are caused by noise or straining. A dehiscence of the superior semicircular canal in the floor of the middle cranial fossa is responsible, and acts as a ‘third window’ into the inner ear.Case history:A patient with confirmed otosclerosis underwent second-side stapedotomy, with good audiometric outcomes. Unfortunately, surgery was complicated by immediate post-operative vertigo and persistent auditory symptoms. A diagnosis of superior canal dehiscence syndrome was eventually made, on the basis of low threshold vestibular evoked myogenic potentials and characteristic computed tomography findings. Superior canal resurfacing resulted in complete resolution of symptoms.Discussion:The otosclerotic focus in the oval window prevented the development of symptoms from this patient's superior canal dehiscence syndrome. Surgical stapedotomy created a third window and resulted in immediate post-operative imbalance and auditory symptoms.Conclusion:The diagnosis of superior canal dehiscence syndrome should be considered in patients with persistent audiovestibular symptoms after stapes surgery. High resolution computed tomography of the temporal bone and vestibular evoked myogenic potential testing, if available, are the investigations of choice in confirming the diagnosis.

Outcomes of Transzygomatic Middle Cranial Fossa Approach for Resection of Skull Base Tumors

2019 ◽  
Author(s):  
Nauman Manzoor ◽  
Silky Chotai ◽  
Robert Yawn ◽  
Reid Thompson ◽  
Alejandro Rivas
Keyword(s):  
Skull Base ◽  
Middle Cranial Fossa ◽  
Skull Base Tumors ◽  
Middle Cranial Fossa Approach ◽  
Cranial Fossa

Outcomes for Repair of Middle Cranial Fossa Encephaloceles Using Pedicled Temporalis Myofascial Flaps with Bone Grafts

2020 ◽  
Author(s):  
Matthew R. Bartindale ◽  
Douglas D. Backous
Keyword(s):  
Bone Grafts ◽  
Middle Cranial Fossa ◽  
Cranial Fossa

Fetal Bovine Collagen Grafts for Repair of Tegmen Defects and Encephaloceles via Middle Cranial Fossa Approach

2020 ◽  
Author(s):  
Anand Patel ◽  
Matthew R. Bartindale ◽  
Jehad A. Zakaria ◽  
Anand V. Germanwala ◽  
Douglas E. Anderson ◽  
...  
Keyword(s):  
Middle Cranial Fossa ◽  
Middle Cranial Fossa Approach ◽  
Bovine Collagen ◽  
Cranial Fossa ◽  
Fetal Bovine
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