Dural arteriovenous fistula involving the posterior condylar canal.

Although dural arteriovenous fistulas (DAVFs) occur in any structure that is covered by the dura mater, DAVFs at the posterior condylar canal have not been reported. We present a DAVF that involves the posterior condylar canal and drains into the posterior condylar vein and the occipital sinus, which was treated by selective transvenous embolization. Knowledge of venous anatomy of the craniocervical junction and careful assessment of the location of the arteriovenous fistula can contribute to successful treatment.

Occipital neuralgia as a presenting symptom of cervicomedullary dural arteriovenous fistula.

Dural arteriovenous fistulas (DAVFs) at the cervicomedullary junction are rare and have a wide variation in presentation. We report a case of occipital neuralgia (ON) as a rare presenting symptom of cervicomedullary DAVF causing intramedullary hemorrhage at the C1 level. It is important to consider the underlying causes of ON, and precise neurological examinations and radiological evaluations are needed.

Rebleeding of ruptured cerebral aneurysms during three-dimensional computed tomographic angiography: report of two cases and literature review.

Although three-dimensional computed tomographic angiography (3D-CTA) is less complicated and time-consuming than conventional cerebral angiography (CCA) and represents a reliable alternative for evaluating cerebral aneurysms, some patients experience aneurysmal rerupture during 3D-CTA. Two women, 79 and 71 years old, who presented with severe subarachnoid hemorrhage (SAH) underwent 3D-CTA within 3 h after SAH onset. Their images clearly indicated extravasation from their aneurysms.

Venous aneurysm development associated with a dural arteriovenous fistula of the anterior cranial fossa with devastating hemorrhage--case report.

A 67-year-old man presented with devastating intracranial hemorrhage (ICH) from an anterior cranial fossa dural arteriovenous fistula (DAVF). Four years earlier, digital subtraction angiography had disclosed a DAVF at the right anterior cranial fossa fed mainly by the ethmoidal branches of the bilateral sphenopalatine arteries and slightly by the ethmoidal arteries of the bilateral ophthalmic arteries, and drained primarily by the sphenoparietal and cavernous sinuses via two dilated cortical veins and slightly by the superior sagittal sinus via a frontal ascending vein. Three-dimensional computed tomography angiography revealed the development of a venous aneurysm on the main draining vein over a 4-year period, but no other changes.

Glioblastoma with an intratumoral feeding-artery aneurysm.

We report a patient with recurrent glioblastoma, in whom serial magnetic resonance angiography (MRA) demonstrated gradual enlargement of an artery feeding the tumor and the development of an intratumoral aneurysm that led to intratumoral hemorrhage. The literature contains no previous reports that clinically document intratumoral aneurysms arising from these vessels. This is a rare case of glioblastoma in which the association of an intratumoral feeding-artery aneurysm, whose rupture led to intratumoral bleeding, was documented by serial MRA imaging and follow-up.