2.A Case of Subependymal Giant Cell Astrocytoma in the Absence of Tuberous Sclerosis: Case Report.
Joung Woo LEE ; Tae Sung KIM ; Young Jin LEEM ; Gook Ki KIM ; Bong Am LEE ; Won LEEM
Journal of Korean Neurosurgical Society 1993;22(11):1273-1278
Subenpendymal giant cell astrocytoma is a rare cerebral glioma that mainly occurs in patients with tuberous sclerosis. In the following case, a subependymal giant cell astrocytoma in the absence of tuberous sclerosis occurred in the wall of the lateral ventricle and presented as an intraventricular mass cauing hydrocephalus by obstruction of the foramen of Monro. The mass was removed completely through transcallosal approach with the microsurgical technique.
Astrocytoma*
;
Cerebral Ventricles
;
Giant Cells
;
Glioma
;
Humans
;
Hydrocephalus
;
Lateral Ventricles
;
Tuberous Sclerosis*
3.Clinical Analysis of Spinal Cord Tumors:Review of 105 Cases(981-1991).
Seong Woon YOON ; Young Jin LEEM ; Tae Sung KIM ; Bong Am LEE ; Gook Ki KIM ; Won LEEM
Journal of Korean Neurosurgical Society 1993;22(11):1228-1238
The authors analyzed 105 cases of spinal cord tumor in regarding to the age, sex, location and distribution, clinical presentation and postoperative outcome. They were confirmed by pathologic study at the Kyung Hee Medical Cented from 1981 to 1991. The incidence of spinal cord tumors was slightly predominant in males. The most commom tumor was neurogenic tumor. The neurogenic tumor composed 43.8%(46 cases), and the rests were meningioma 15.2%(16 case), metstasis 10.5%(11 cases) and others. The tumor were located most frequently in the thoracic area(31.4%) and in the intradural extramedullary space(56.1%). Most common initial symptom of spinal cord tumors were pain and it's mean duration was 8.3 month. The patients were assigned to one of four groups according to their neurologic deficit. About 66.6%(70 cases) of the patients were included in Groups I and II(mild neurologic deficit), and others were classified in Groups III and IV(significant to severe neurologic deficit). Complete tumor removal was achieved in 70.4%(4 cases) of the patients, and subtotal removal was performed in 26.7%(28 cases), and biopsy was performed in 2.9%(3 cases). Among the 105 patients, the postoperative outcomes on dischage were recovery in 36 cases(34.3%), improved in 45 cases(42.9%), stationary state in 12 cases(11.4%), and progression in 12 cases(11.4%).
Biopsy
;
Hospital Distribution Systems
;
Humans
;
Incidence
;
Male
;
Meningioma
;
Neurologic Manifestations
;
Spinal Cord Neoplasms
;
Spinal Cord*
4.Subtemporal Approach vs. Pterional Approach in Basilar Bifurcation Aneurysms: 2 Case Reports.
Seong Woon YOON ; Gook Ki KIM ; Young Jin LEEM ; Tae Sung KIM ; Bong Am LEE ; Won LEEM
Journal of Korean Neurosurgical Society 1993;22(12):1394-1402
Two patients with basilar bifurcation aneurysm were treated by different approach, low lying posteriorly projecting aneurysm was clipped with subtemporal approach and high bifurcated basilar bifurcation aneurysm with multiplicity approached through pterional method. The author reviewed literature concerning the approaches of basilar bifurcation aneurysm.
Aneurysm*
;
Deception
;
Humans
5.Detection of human CTLA-4 by using anti-peptide antibody.
Yong Hoon CHUNG ; Yang Ja CHO ; Seog Won LEEM ; Chang Hwan PARK ; Yong CHOI ; Dupont BO
Journal of the Korean Society for Microbiology 1993;28(3):229-237
No abstract available.
Humans*
6.Clinical Study of Cerebral Blood Flow in Patients with Subarachnoid Hemorrhage Due to Ruptured Intracranial Aneurysms.
Young Jin LIM ; Tae Sung KIM ; Gook Ki KIM ; Bong Arm RHEE ; Won LEEM
Journal of Korean Neurosurgical Society 1990;19(10-12):1258-1275
This study was carried out to find out changes in regional cerebral blood flow(r-CBF) in relation to(i) clinical status of patients with subarachnoid hemorrhage due to ruptured intracranial aneurysms ; (ii) the degree of subarachnoid hemorrhage as indicated by brain CT scanning ; (iii) the severity of angiographic vasospasm, and (iv) other neuropathological condition. Measurement of r-CBF were performed, using 133Xe inhalation method, on 50 patients with ruptured intracranial aneurysms. Some of the major findings were as follows : 1) The degree of abnormalities of blood flow correlated well with the clinical severity of neurological deficits. 2) A marked reduction in r-CBF was found in patients with intracerebral hematoma, ischemic lesion and hydrocephalus. 3) In angiospasm area, r-CBF was found in patients with intracerebral hematoma, ischemic lesion and hydrocephalus. 3) In angiospasm area, r-CBF decreases below 30ml/100gm/min in almost all of the patients, and severity of vasospasm correlated with the decrease of CBF. 4) The measurement of CBF on patients with subarachnoid hemorrhage was thought to the useful for foreseeing the clinical outcome of the patients.
Brain
;
Hematoma
;
Humans
;
Hydrocephalus
;
Inhalation
;
Intracranial Aneurysm*
;
Subarachnoid Hemorrhage*
;
Tomography, X-Ray Computed
7.Correlation of Neuropeptide Y Neuron and its Size with Nitric Oxide Synthase in Cerebral Cortex of Aged Rats.
Sung Min KIM ; Young Bum KIM ; Won LEEM
Journal of the Korean Geriatrics Society 2000;4(4):278-285
No abstract available.
Aging
;
Animals
;
Cerebral Cortex*
;
Neurons*
;
Neuropeptide Y*
;
Neuropeptides*
;
Nitric Oxide Synthase*
;
Nitric Oxide*
;
Rats*
8.Intraoperative use of Real-time Ultrasonography in Neurosurgery.
Nam In KIM ; Young Jin LIM ; Tae Sung KIM ; Gook Ki KIM ; Bong Arm RHEE ; Won LEEM
Journal of Korean Neurosurgical Society 1991;20(1-3):3-12
Recent technological advances in ultrasound instrumentation have resulted in equipment that will image in "real-time" slices of the human brain similar in quality to computerized tomography(CT). Multiple authors have attested to its usefulness in locatin, characterizing, and facilitating in the biopsy or removal, or both, of intracerebral masses. In this study, the author has examined the efficacy of intraoperative neurosurgical ultrasound in 18 patients who were admitted to the Department of Neurosurgery, Kyung Hee University Hospital. The results were as follows : 1) It can provide critical assistance in precise localization of subcortical masses, since in many instances the overlying surface of brain provides no clue for localization. 2) This technique is very useful for the identificantion of deep lesions, provding infromation about their solid and cystic components and about the shortest route of access to tumor. 3) It provides precise information to help guide biopsy needles into deep lesions, and to confirm their presence within the lesion itself. 4) The system is highly accurate in visualizing ventricular catheters during and after their placement. 5) The system is inherently safe for the patient and the operating room personnel since there is no radiation exposure.
Biopsy
;
Biopsy, Needle
;
Brain
;
Catheters
;
Humans
;
Needles
;
Neurosurgery*
;
Operating Rooms
;
Ultrasonography*
9.The Role of Gamma Knife Radiosurgery for Essential and Secondary Trigeminal Neuralgia: vs Microsurgery.
Sang Hyun KEEM ; Young Jin LIM ; Won LEEM ; Bong Arm RHEE ; Jun Seok KOH ; Tae Sung KIM ; Gook Ki KIM
Journal of Korean Neurosurgical Society 2000;29(5):650-658
No abstract available.
Microsurgery*
;
Radiosurgery*
;
Trigeminal Neuralgia*
10.A Case of Sphenoid Ridge Meningioma with the Unusual C.T. Finding: Case Report.
Shin Tae KIM ; Bong Arm RHEE ; Won LEEM
Journal of Korean Neurosurgical Society 1981;10(2):709-718
We experienced the unusual C.T. finding of meningioma recently. Classical C.T. finding of meningioma reveals found homogenous high density or isodensity in the plain C.T. and homogenous marked enhancement in the postinfusion C.T. But, some of meningioma demonstrates atypical features such as irregular areas of nonenhancing mass, irregular ill-defined enhancing mass with large area of peritumoral edema, low density area within the mass representing necrosis and cystic change. C.T. finding that we experienced revealed ring-formed high density in the plain C.T. and homogenous strong enhancement in the postinfusion C.T.
Edema
;
Meningioma*
;
Necrosis