Moyamoya disease is an unusual vascular disorder highlighted by progressive bilateral internal carotid artery occlusion and collateralization of intracranial blood flow. The purposes of the bypass procedures : 1) reduce or arrest of the chance of repeated ischemic attack by making the additional collateral blood flow, 2) decrease the chance of repeated bleeding by reducing the number of moyamoya vessels. During the period from June 1989 through February 1991, 8 moyamoya diseases associated with intraventricular hemorrhage were operated by STA-MCA anastomosis plus EMS. Results are as follows : 1) Slightly female dominancy in incidence(5 : 3), and all of the patients were middle aged(range 32 to 55 years). 2) All of the patients had sudden onset of headache, and most patients whad neck stiffness and vomiting. 3) In all of the patients, confirmatory diagnosis could be done by angiography, and all of the patients had gypical angiographic findings of moyamoya disease. 4) All of the patients had IVH in brain CT scan. 5) All of the patients were surgically treated : STA-MCA anastomosis plus EMS. 6) The postoperative revascularization rate was 89%(8 sides in 9 sides). 7) The postoperative results were excellent in 5, good in 1, and death in 2. The rarity of such lesions in KOrea and their surgical results are reviewed briefly.
Angiography ; Brain ; Carotid Artery, Internal ; Diagnosis ; Female ; Headache ; Hemorrhage* ; Humans ; Korea ; Moyamoya Disease* ; Neck ; Tomography, X-Ray Computed ; Vomiting

The surgical intervention for secondary developmental cervical spinal stenosis that results in myelopathy and radiculopathy has been modified by technical improvement to obtain more reliable enlargement of the cervical spinal canal. The authours have experienced good results with the modified open door expansive laminoplasty, so we report this article. The patients were treated by surgical intervention during the period from October 1989 to February 1991. The results obtained were as follows : 1) The average age was 54.7 years, and the sex distribution ratio of female to male was 2 : 8. 2) In clinical symptoms and symptoms of both myelopathy and radiculopathy. 3) In morphological analysis of lesions, all patients except one case had lesions over 3 levels, The lesions were spondylosis, spondylosis combined with soft disc herniation, spondylosis combined with OPLL, spondylosis combined with OPLL and soft disc herniation, OPLL and OYL in the order of frequency. 4) The operation method was as follows : after the patient was positioned in modified Concorde position, open door lamina was anchored to faced joint capsule and surrounding tissue with nylon sutures. And then the raw epidural space was covered with Lyodura by the modified Hirabayashi method. By this method, reclosure of widened spinal canal was prevented. 5) The outcomes were evaluated by JOA score difference between preoperation and post operation times. The outcome of recovery rate was 100% in five cases. Therewere no aggravated or unimproved cases. The results were excellent 8 cases, good 1 case, unchanged 0 case, poor 0 case and expired 1 case.
Epidural Space ; Female ; Humans ; Joint Capsule ; Male ; Nylons ; Radiculopathy ; Sex Distribution ; Spinal Canal ; Spinal Cord Diseases ; Spinal Stenosis* ; Spondylosis ; Sutures

During the period from March 1990, through September 1993, 11 patients with moyamoya disease underwent superficial temporal artery(STA)-to-middle cerebral artery(MCA) anastomosis and encephalomyosynangiosis(EMS) bilaterally. The mean follow-up period was 30.6 months(range 17 to 42 months). The most frequent computed tomographic findings were intraventricular hemorrhage in adult patients and cortical infarction in pediatric patients. In all of the patients, confirmatory diagnosis could be made by angiography, and all had typical angiographic finding of moyamoya disease. According to angiographic classification by Suzuki, the most frequent phase was stage three. A modified continuous suture technique was used during anastomosis. The advantages of this microvascular suture technique are saving time for the surgical procedure, lessening bleeding from the anastomotic site and the ease and safety with which anastomosis can be achieved in the deep cranial cavity. Postoperatively, follow-up angiography was taken between 1 year and 2 years after operation. The angiography revascularization rate was 100%, excellent in 6, and good in 5. The typical postoperative angiography findings are as follows : 1) reduction of moyamoya vessels, 2) normalization or improvement of abnormal posterior circulation, 3) visualization of MCA territory through MCA-STA bypass, and 4) dilatation of STA. There were no major complication in patients with surgery, and no poor outcomes. These results indicate that the STA-MCA anastomosis and EMS in moyamoya disease can normalize cerebral circulation and reduce repeat ischemic attack and repeated bleeding.
Adult ; Angiography ; Cerebral Arteries* ; Classification ; Diagnosis ; Dilatation ; Follow-Up Studies* ; Hemorrhage ; Humans ; Infarction ; Moyamoya Disease* ; Suture Techniques

Recently we performed a modified sternum-splitting approach in surgery for anterior space-taking lesion in the upper thoracic region. In contrast to the original trans-sternal approach introduced by Cauchoix, we cut only the manubrium and split it using vertebral spreader. After reaching the anterior surface of the cervico-Thoracic vertebrae, the central portion of the vertebral body was removed with air-drill under an operating microscope. The longitudinal bone defect of the vertebral bodies was filled with a bone graft obtained from the iliac bone. Removal of the space-taking lesions in the cervico-thoracic junction and upper thoracic region can be performed safely by utilizing the modified sternum-splitting approach. This approach can be applied also to endarterectomies at the origins of the vertebral arteries and the subclavian artery.
Endarterectomy ; Manubrium ; Microsurgery ; Spine ; Subclavian Artery ; Transplants ; Vertebral Artery

In the treatment of fractures of the thoracolumbar junctiion area, surgical intervention was performed when posterior part of veretbral body, posterior structure supporting ligaments were involved and body compression more than 40%. Number of cases satisfying above criteria were seven between Aug. 1990 and Jun. 1991. Age distribution ranged from 15 to 57 years. Sex ratio was 4:3(F:M). Four patients presented with nerve root sign, one patient with cauda equina signs, and two patients were normal neurologically. In all cases, spinal canal decompression, internal instrument fixation, and bone fusion with iliac bone were performed via anterolateral approach. After surgical treatment, neurological deficits disappeared and kyphotic angle returned to normal range of thoracolumbar junction area in all cases. Percentage of body compression was improved from preop. 55% to postop. 21% in average. According to above results, we concluded that anterior instrumental fixation combined with bone fusion using iliac bone was supperior to posterior approach in providing biomechanical stability and decompression of protruding ventral bone fragments.
Age Distribution ; Cauda Equina ; Decompression ; Humans ; Ligaments ; Reference Values ; Sex Ratio ; Spinal Canal

Cerebral rete mirabile is a unusual form of chronic cerebrovascular occlusive disease characterized usually by bilateral stenosis of distal internal carotid arteries and their vicinity, by a hazy network of collateral circulation at the base of brain called moyamoya vessels and clinically by recurring hemispheric ischemic attack in children. We have reported here 2 cases of cerebral rete mirabile in children and performed newly developed operative procedure which we think is an ideal surgical method for treatment of this disease in children and is compared with other surgical treatment.
Brain ; Carotid Artery, Internal ; Child* ; Collateral Circulation ; Constriction, Pathologic ; Humans ; Ischemia ; Surgical Procedures, Operative

Cerebral cavernous hemangioma is very rare disease in the cerebral vascular malformations. We experienced a case of this vascular malformations at the left frontal lobe near the cortex which had symptoms and signs of abrupt generalized tonic-clonic seizure. This malformation is encountered more commonly in adult in the third to fifth decade, and is found most frequently in the white matter of the cerebral hemisphere. The value of computerized tomography(C-T) in the detection of such malformations is stressed. Good result was obtained by the microsurgical approach to these malformations.
Adult ; Cerebrum ; Frontal Lobe* ; Hemangioma, Cavernous* ; Hemangioma, Cavernous, Central Nervous System ; Humans ; Microsurgery ; Rare Diseases ; Seizures ; Vascular Malformations

With changing mechanisms of injury, heightened clinical awareness, and better diagnostic technology, odontoid fractures constitute 9~18% of cervical fractures in recent reports. The odontoid type II fracture is the most common axis fracture and it is also the most difficult to treat. Type II fractures with greater than 6mm dens dislocation have a higher incidence of nonunion with nonoperative therapy and should be offered early operative reduction with fusion. Recently we have experienced a young male patient with odontoid type II fracture. The degree of dens dislocation was 8mm. The fractured odontoid process was removed through transoral-transpharyngeal approach and bone fusion was performed with iliac bone. And the inserted bone was fixed with screws and mini-plate for further stabilization. The operative result was good without any serious complications. The operation technique is detailed.
Axis, Cervical Vertebra ; Dislocations ; Humans ; Incidence ; Male ; Odontoid Process

BACKGROUND: Electronic bulletin board systems have been used for education, information exchange, and medical consultation for a number of years. However, most of these systems have been text-based. The field of dermatology has never had a system that allowed a quick exchange of visual information. OBJECTIVE: Dermatology is a field of medicine which especially requires a visual image for an accurate diagnosis, and subsequent effective treatment. We have developed a web-based bulletin board system which can be used by any clinician with access to the internet to view clinical images of skin diseases with accompanying clinical findings. METHODS: A web-based bulletin board system was developed for the internet. The system is designed to operate independently of client hardware and software using hyper text markup language so participants using different platforms can access and use the site effectively. RESULTS: Any participant can easily upload a diagnostic image to the board along with relevant clinical information. Other participants can make comments regarding the presented case which may prove useful to the presenter in diagnosis and development of an effective treatment modality. CONCLUSION: Our web-based bulletin board system for discussion of skin diseases has the potential to help in the diagnosis and treatment of various skin diseases. Dissemination of information relating to clinical cases and participation of a widespread audience of experienced clinicians will allow better practice of dermatology and aid in further training of inexperienced clinicians.
Dermatology ; Diagnosis ; Education ; Internet ; Skin Diseases* ; Skin*

In spite of high-dose, hyperventilation, hyperosmolar agents, appropriate surgical evacuation, and cerebrospinal fluid when possible, uncontrolled intracranial hypertension, which was defined as occurring when intracranial pressure(ICP) exceeded 25 mmHg for 2 hours or more, occurred in 8 patients. Persistent elevated ICP occurred in 4 patient with acute subdural hematoma and brain contusion, in 2 patients with aneurysm and brain infarction, in 1 patient with hypertensive intracerebral hematoma, and in 1 patient with meningioma. All of these patients received intravenous barbiturate to control the ICP. The initial thiopental loading dose(10mg/kg) effectively reduced the ICP in 5 patients(62.5%). In those patients responding to the initial loading dose, four have survived, and one died due to pulmonary complication. None of three nonresponders to barbiturate survived. Two of the survivors have returned to a productive life, and two ramain moderately disabled. The favorable outcome in this series suggests that early aggresive treatment of intracranial hypertension with barbiturate and careful attention to medical complications can improve the outcome in patients with uncontrolled intracranial hypertension, with barbiturate and careful attention to medical complications can improve the outcome in patients with uncontrolled intracranial hypertension, especially in postoperative state. A broader investigation of the clinical application of barbiturates in indicated.
Aneurysm ; Barbiturates ; Brain Infarction ; Brain Injuries ; Cerebrospinal Fluid ; Coma* ; Hematoma ; Hematoma, Subdural, Acute ; Humans ; Hyperventilation ; Intracranial Hypertension* ; Meningioma ; Survivors ; Thiopental