[A case of cavernous sinus aspergillosis].

We reported a case of cavernous sinus aspergillosis. A 62-year-old man complained of trigeminal neuralgia in the right V1 region. Neurological examination on admission showed ptosis, loss of light reflex and ophthalmoplegia externa in the right side.

[Evoked potential monitoring in an operation of neurosurgery].

In the neurosurgical field, the evoked potential is employed for the monitoring of intraoperative nerve function. During evoked potential monitoring, surgical manipulation-related nerve dysfunction is detected, and functional localization/nerves in the cerebral cortex are identified to prevent postoperative neurological complications. It is important to reduce the contact resistance to 2 kOmega or less on the application of plate electrodes used for recording and prevent noise by bundling electrode leads, to ensure a stable evoked potential during surgery.

[New monitoring method for the pudental nerve during surgery: cases of intraoperative monitoring for lumbo-sacral lipomeningocele].

We carried out intraoperative monitoring of the pudental nerve while separating vertebral spinal tumors from the spinal cord in five patients, including four infants. Although monitoring using a manometer or needle electrodes has been reported, monitoring done with disk electrodes to ascertain the compound muscle action potential (CMAP) of the external sphincter muscle has not been yet attempted. Prior to the surgical procedure, we locate a point suitable for CAMP recording of the muscle.

Recurrent meningitis associated with complete Currarino triad in an adult--case report.

A 58-year-old woman presented with Currarino triad manifesting as recurrent meningitis. Currarino triad is a combination of a presacral mass, a congenital sacral bony abnormality, and an anorectal malformation, which is caused by dorsal-ventral patterning defects during embryonic development. She had a history of treatment for anal stenosis in her childhood.

[Observation of statistics of screening for unruptured cerebral aneurysms in Tochigi prefecture].

Screening for unruptured cerebral aneurysms (UCAs) using magnetic resonance imaging (MRI) and angiography (MRA) is prevalent in Japan. To reveal the prevalence of UCAs found during screening, we collected data of the results in 1999, in Tochigi prefecture. In the prefecture, of which the population was about 2 million, 26 institutions had been established in 1999, and 5,222 persons had been screened.

Intracranial hemangiopericytoma with extracranial metastasis occurring after 22 years.

A 65-year-old man developed pancreatic and pubic tumors 22 years after craniotomy for a left sphenoid ridge tumor. The histological finding of the primary sphenoid ridge tumor was meningotheliomatous meningioma. The histological appearance of the biopsy specimen of the pubic tumor was hemangiopericytoma.