PMC5364905_01
Computed tomography showing an internal artery aneurysm in the sphenoid sinus.
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F1
To examine the vessels, computed tomography (CT) was performed and detected an ICA aneurysm (Fig. 1).
Magnetic resonance angiography showing no aneurysm at the any portions of arteries.
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F2
There was not an aneurysm at that time (Fig. 2).
Angiography showing a right internal artery aneurysm which show poorly defined neck.
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F3
To detect the bleeding points we performed angiography. The angiography revealed 20 mm aneurysm which had poorly defined neck (Fig. 3).
(A) Diagram showing the arteries in the head and neck after the first operation was performed. (B) Diagram after the second surgery in which the many presumed collateral arteries are depicted.
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F4
The cervical portion of the ICA was ligated, and the distal portion from the ophthalmic artery of the ICA was clipped to trap the ICA (Fig. 4A).
The computed tomography after the first operation showing no right internal carotid artery and aneurysm.
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F5
Postoperative images showed no right ICA or the aneurysm (Fig. 5).
The operative view showed the stumps of IC and aneurysm which were severed. The neck was poorly defined.
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F6
Finally, a poorly defined neck was found, which highly showed a traumatic aneurysm (Fig. 6).