[A case of unruptured fusiform aneurysm in a middle cerebral artery branch].

We report a case of a 55-year-old female presenting with headache. Neuroradiological investigations revealed a fusiform aneurysm at the M3 part of the right middle cerebral artery. The aneurysm rapidly developed in the course of one year.

[Spontaneous umbilical fistula as a complication of ventriculo-peritoneal shunt: case report].

We report a rare case of a spontaneous umbilical fistula as a complication of ventriculo-peritoneal shunt. A 36 year-old male was admitted our hospital complaining serous discharge from the umbilicus. Two years before admission, he underwent ventriculo-peritoneal shunt for the hydrocephalus due to right hypertensive intracranial hematoma and intraventricular hemorrhage.

Surgically treated aneurysm of the trunk of the persistent primitive trigeminal artery--case report.

A 62-year-old man presented with a very rare cerebral aneurysm arising from the trunk of the persistent primitive trigeminal artery (PPTA) manifesting as subarachnoid hemorrhage. Angiography showed a saccular aneurysm at the curved mid-section of the trunk of the left PPTA of the adult type. The patient underwent surgery via the left subtemporal approach, and the aneurysm was successfully eliminated by clipping without sequelae.

A recurrent intradural cervical neurenteric cyst operated on using an anterior approach: a case report.

The neurenteric cyst is an uncommon congenital lesion. In most reported cases, it has been operated on via a posterior approach using a laminectomy, despite the fact that the cyst is usually located ventral to the spinal cord. Reports have shown that early postoperative results have been good with the posterior approach, but very few studies of the long-term postoperative recurrence of neurenteric cysts have been conducted.

Operative findings in cases of trigeminal neuralgia without vascular compression: proposal of a different mechanism.

Trigeminal neuralgia is known to be caused by vascular compression at the trigeminal root entry zone (REZ) and microvascular decompression provides good outcome in most of cases. However, in some cases, no vascular compression was observed at the REZ. Over the last 2(1/2) years, the first author operated on 53 cases of trigeminal neuralgia with microvascular decompression and encountered nine cases where no offending vessels were noted at or near the REZ.