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Updated: Jul 4, 2026

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Published on: July 9, 2020
Internal carotid false aneurysm after thermocoagulation of the gasserian ganglion
Sébastien Schmerber1, Ashok Vasdev, Karim Chahine
1Joseph Fournier University, Grenoble, France. SSchmerber@chu-grenoble.fr
Objective:
To identify petrous internal carotid bleeding aneurysm as a complication of gasserian ganglion thermocoagulation.
Patients:
A single case presenting with epistaxis and otorrhagia 1 month after gasserian ganglion thermocoagulation in the treatment of refractory trigeminal neuralgia.
Intervention(S):
Gasserian ganglion thermocoagulation, computed tomographic scan, and angiocomputed tomographic scan revealing petrous internal carotid ruptured aneurysm and internal carotid embolization.
Main Outcome Measure(S):
Radiologic diagnosis of the vascular injury after gasserian ganglion thermocoagulation.
Results:
Radiologic identification of ruptured internal carotid artery as the cause of simultaneous epistaxis and otorrhagia.
Conclusion:
Gasserian ganglion thermocoagulation may cause aneurysm and rupture of the petrous portion of the internal carotid artery.
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