No abstract available.
Arteries* ; Humans ; Intracranial Aneurysm* ; Single Parent*

No abstract available.
Gliosarcoma*

Traumatic intracranial aneurysms are rare, compromising less than 1% of intracranial aneurysms. The case of 20-year-old man suffered from delayed frontal intracerebral hematoma, subarachnoid hemorrhage and intraventricular hemorrhage from traumatic pericallosal aneurysm 12 days after head injury is presented. Traumatic pericallosal artery aneurysm is always near the falcine edge, is unrelated to arterial branching point. Sudden movement of brain and artery causes vessel wall injury against the stationary edge of the falx. Because of high mortality rate of ruptured traumatic aneurysm, clinical suspicion must be focused on the prompt diagnostic work-up and early treatment.
Aneurysm* ; Arteries* ; Brain ; Craniocerebral Trauma ; Hematoma ; Hemorrhage ; Humans ; Intracranial Aneurysm ; Mortality ; Subarachnoid Hemorrhage ; Young Adult

No abstract available.
Diagnosis* ; Hemangioma*

No abstract available.

No abstract available.
Radiosurgery* ; Trigeminal Neuralgia*

The authors analyzed 38 consecutive cases with an occipital arteriovenous malformation(AVM) in regard to visual field defect. The incidence of occipital AVM was 10.4% among 367 patients with a cerebral AVM treated between 1975 and 1994 in our institute. Bleeding rate of occipital AVM in this series was 86.8%(EE cases) and it was significantly higher than that of AVM in other locations. Of 38cases, 15 patients(39.5%) had a visual field defect on admission and all of them were accompanied by intracerebral hematomas caused by the rupture of AVMs. The presence of visual field defect did not correlate with angioarchitecture in reference to pattern of nidus, feeding artery, and draining vein. Of 15 patients with visual field defect. 10 patients showed homonymous hemianopsia and five patients, homonymous quadrantanopsia. The size and location of intracerebral hematoma correlated well with hemispheric approach : 11, parietooccipital approach : 10, with six preoperative embolization and 1 postoperative gamma knife surgery. Fifteen patients underwent gamma knife surgery with five preoperative embolization. One patient underwent embolization only. The results of treatment were as follows : There were no mortality and morbidity except for visual field defect. We confirmed complete resection or obliteration of malformed vessels in 25 patients and reduction of the nidus size in eight patients. Five patients were not followed. After gamma knife surgery, two patients showed rebleeding during the follow up period. Among 23 patients who had no visual field defect before treatment, three patients showed visual field defect after treatment(one after microsurgical resection using occipital interhemispheric approach, two after preoperative embolization). In 15 patients with visual field defect before treatment, four patients showed improvement in their visual field defect after treatment(three after microsurgical resection using occipital interhemispheric approach, one after gamma knife surgery). The parietooccipital approach did not change the status of visual field in any of the ten parients. In occipital AVM, visual field defect was the most srious morbidity. Ruptured occipital AVM had a higher incidence of hemorrhage causing a visual field defect and had a higher indication of direct surgical approach than AVM of other location. In planning surgery of occipital AVM, one has to count microsurgical anatomy based on the visual pathway as well as clinical findings such as the angioarchitecture, location of intracerebral hematoma, and preopeative visual field.
Arteries ; Arteriovenous Malformations* ; Follow-Up Studies ; Hematoma ; Hemianopsia ; Hemorrhage ; Humans ; Incidence ; Mortality ; Occipital Lobe ; Rupture ; Veins ; Visual Fields* ; Visual Pathways

No abstract available.

Although varying types of cystic lesion, true to false, in the spinal cord have been described, spinal enterogenous cyst is a rare condition. It is considered as a result of congenital remnant of primitive foregut. The authors experienced a case of a spinal enterogenous cyst in the intradural space along the fouth, fifth and sixth cervical spine, occurred in a twenty-seven years old male patient. The cyst was composed of hyalinized fibrous wall with single layered lining epithelium, such as simple non-ciliated cuboidal epithelium or ciliated tall columnar epithelium with focal mucinous columnar epithelium.
Male ; Humans ; Cysts

Brain stem hematomas, expecially due to ruptured angiographically occult vascular malformation(AOVM), are of great interest because they are potentially curable. Preoperative diagnosis has been difficult due to poor resolution of CT scans in the posterior fossa region. The advent of MRI has made the identification of the angiographically occult vascular malformation possible before surgical excision. We preset 3 cases of brainstem hematoma due to vascular malformations which wre not visualized by angiography but were diagnosted by MRI. The patients were treated surgically and vascular malformations were confirmed.
Angiography ; Brain Stem* ; Diagnosis ; Hematoma* ; Humans ; Magnetic Resonance Imaging ; Tomography, X-Ray Computed ; Vascular Malformations