Dura-based giant intracranial schwannoma in the middle fossa.

A 49-year-old female presented with a rare giant schwannoma arising from the dura mater of the middle fossa manifesting as loss of left visual acuity. Magnetic resonance imaging revealed a heterogeneously enhanced giant mass in the left middle fossa. Surgery via the transsylvian approach confirmed the origin of the tumor between the left internal carotid artery and the trigeminal nerve in the lateral wall of the cavernous sinus.

Ultrasonic tissue characterization of the atherosclerotic carotid artery: histological correlates or carotid integrated backscatter.

Histological abnormalities of the atherosclerotic lesion are closely related to the stability of the plaque. Specifically, the plaque is likely to be unstable if the fibrous cap is thin. However, ultrasonic characterization of the atherosclerotic lesion has not been done from this viewpoint.

Stenting of extracranial carotid artery stenosis.

The purpose of this study is to evaluate our cases of cervical internal carotid artery stenosis for safty stenting.We investigate the preoperative internal carotid artery stenosis using by integrated backscatter (IBS) method of ultra sonography, comparing with the thirty five surgical specimens as to their nature, histological structure, thickness of fibrous cap. We choose the protection method according to plaque structure, and placed Easy-Wall stent or Smart stent after prePTA.

Direct clipping of a large basilar trunk aneurysm via the posterior petrosal (extended retrolabyrinthine presigmoid) approach--case report.

A 53-year-old female presented with an unruptured, large basilar trunk aneurysm manifesting only as headache with no neurological deficits, including absence of cranial nerve dysfunction. Cerebral angiography disclosed a large aneurysm with a wide neck arising from the midbasilar artery. We treated the aneurysm surgically via the posterior petrosal approach.

[A case of high flow CCF with congestive hemorrhage].

The authors report a case of high flow CCF with intracerebral hemorrhage during treatment with endovascular coil embolization. A 52-year-old woman had been in good health until a sudden onset of orbital bruit and left orbital tinnitus occurred. Conjunctival chemosis and diplopia caused by left abducens palsy gradually progressed.