1. Copyright © 2002 American Medical Association. All rights reserved.
From: Evaluation and Surgical Management of Isolated Sphenoid Sinus Disease
Arch Otolaryngol Head Neck Surg. 2002;128(12): doi: /archotol
Figure Legend:
Figure 1. Acute sphenoid sinusitis. A, Axial T2-weighted magnetic resonance image demonstrates an air-fluid level (arrows) within the sphenoid sinus. The signal intensity of the fluid is similar to that of cerebrospinal fluid. Note mucosal thickening within the ethmoid labyrinths bilaterally. B, Coronal T1-weighted postgadolinium image in the same patient demonstrates fluid filling the right sphenoid sinus and an epidural empyema (asterisks) above the planum sphenoidale. There is extensive enhancement of the dura (arrows) consistent with meningeal inflammation related to the sinusitis.
Date of download: 9/26/2017
Copyright © 2002 American Medical Association. All rights reserved.

2. Copyright © 2002 American Medical Association. All rights reserved.
From: Evaluation and Surgical Management of Isolated Sphenoid Sinus Disease
Arch Otolaryngol Head Neck Surg. 2002;128(12): doi: /archotol
Figure Legend:
Fungal process (mycetoma). A, Coronal computed tomographic image filmed with bone window technique demonstrates opacification of the left sphenoid sinus with marked thickening of the walls of the sinus suggesting a long-standing inflammatory process. Foci of increased density consistent with calcifications are noted centrally within the material, suggesting chronic inspissated secretions or the presence of fungal elements. Aspergillus was identified at the time of surgical drainage. B, Axial T2-weighted magnetic resonance image in the same patient shows a central hypointense signal within the left sphenoid sinus surrounded by a rim of hyperintense signal. Foci of low signal are frequently noted in cases of fungal disease and may be related to the presence of hyphae and/or the accumulation of trace metals.
Date of download: 9/26/2017
Copyright © 2002 American Medical Association. All rights reserved.

3. Copyright © 2002 American Medical Association. All rights reserved.
From: Evaluation and Surgical Management of Isolated Sphenoid Sinus Disease
Arch Otolaryngol Head Neck Surg. 2002;128(12): doi: /archotol
Figure Legend:
Cerebrospinal fluid leak. A, Coronal bone window computed tomographic image demonstrates a prominent air-fluid level within the dependent portion of the left sphenoid sinus. A defect in the roof of the left sphenoid sinus (arrow) is noted laterally. The lateral position of the defect in a somewhat hyperpneumatized sphenoid sinus is suggestive of an erosive arachnoid granulation as the cause of the defect. B, Coronal T2-weighted magnetic resonance image in the same patient demonstrates hyperintense signal consistent with fluid in the left sphenoid sinus. No herniation of brain parenchyma into the sinus through the bony dehiscence seen on the computed tomographic examination was identified.
Date of download: 9/26/2017
Copyright © 2002 American Medical Association. All rights reserved.

4. Copyright © 2002 American Medical Association. All rights reserved.
From: Evaluation and Surgical Management of Isolated Sphenoid Sinus Disease
Arch Otolaryngol Head Neck Surg. 2002;128(12): doi: /archotol
Figure Legend:
Cavernous hemangioma. A, Axial soft tissue window computed tomography after contrast administration demonstrates an enhancing mass within the left sphenoid sinus with components also noted within the left middle cranial fossa involving the cavernous sinus (arrows) and within the prepontine cistern. The lateral wall of the left sphenoid sinus is eroded. B, Axial T2-weighted magnetic resonance image demonstrates homogeneous hyperintense signal throughout the lesion, but without definite flow voids. Increased T2 signal is typical of hemangiomas but is not a specific finding. C, Digital subtraction image from an internal carotid arteriogram in a slightly oblique lateral projection demonstrates a dense tumor blush (arrows) surrounding the distal left internal carotid artery characteristic of a hypervascular mass. The component of the lesion within the sphenoid sinus was fed primarily from external carotid artery branches.
Date of download: 9/26/2017
Copyright © 2002 American Medical Association. All rights reserved.