• 한국미생물학회:학술대회논문집
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• 한국미생물학회 2005년도 International Meeting of the Microbiological Society of Korea
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• pp.188.2-188
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• 2005

• Journal of Korean Neurosurgical Society
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• 제61권1호
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• pp.120-126
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• 2018

Intraparenchymal meningiomas without dural attachment are extremely rare, especially when they occur in basal ganglia region in child. An 8-year-old boy was admitted at our hospital, complaining of recurrent headache and vomiting for 3 months. Neurological examination showed impaired vision and mild paresis of the left extremities. Magnetic resonance imaging demonstrated a lesion located in the right basal ganglia region extending to superasellar cistern with solid, multiple cystic and necrotic components. Computed tomography revealed calcification within the mass. Due to the anterior cerebral artery involvement, a subtotal resection was achieved and postoperative radiotherapy was recommended. Histopathological examination indicated that the lesion was an atypical meningioma. The postoperative rehabilitation was uneventful. Mildly impaired vision and motor weakness of left extremities improved significantly and the patient returned to normal life after surgery. To our knowledge, intraparenchymal atypical meningioma in basal ganglia extending to superasellar cistern was never reported. The significance in differential diagnosis of lesions in basal ganglia should be emphasized.

• Journal of Korean Neurosurgical Society
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• 제49권5호
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• pp.284-286
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• 2011

Glossopharyngeal neuralgia is a relatively rare condition characterized by severe, paroxysmal episodes of lancinating pain in the tongue, throat, ear, and tonsil. This disorder is assumed to be due to compression of the glossopharyngeal nerve by vascular structures. A 47-year-old woman complaining of sharp and lancinating pain in the right periauricular and submandibular areas visited our hospital. Swallowing, chewing, and lying on her right side triggered the pain. Her neurologic examination revealed no specific abnormalities. The results of routine hematologic and blood chemistry studies were all within normal limits. Carbamazepine and gabapentin were given, but her symptoms persisted. Her pain was temporarily relieved only by narcotic pain medication. MRI showed an arachnoid cyst located in the right cerebellomedullary cistern extending to the cerebellopontine cistern. Cyst removal was performed via a right retrosigmoid approach. Lateral suboccipital craniotomy was performed using the right park-bench position. After opening the dura and cerebellopontine angle, the arachnoid cyst was exposed. The arachnoid cyst was compressing the flattened lower cranial nerves at the right jugular fossa. Her symptoms resolved postoperatively. Two months after the operation, she was completely free from her previous symptoms.

• Journal of Korean Neurosurgical Society
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• 제40권1호
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• pp.31-34
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• 2006

This 58-year-old woman was transferred from a local hospital due to symptoms of acute headache and decreased consciousness. Computed tomography revealed a subarachnoid hemorrhage with blood clot in prepontine cistern. On the first day in the hospital, diagnostic cerebral angiography revealed a basilar tip aneurysm. We performed basilar artery to bilateral posterior cerebral artery[PCA] stent placement to reconstruct the basilar artery apex.

• 대한환경공학회지
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• 제28권12호
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• pp.1310-1315
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• 2006

본 연구에서는 초음파를 이용한 조류의 제거 및 저감에 대한 연구를 진행하였다. 본 실험은 주파수별(28 kHz의 단주파와 40 kHz의 다주파), 출력별(10, 15, 20, 25, 30 W/L), 조류 개체수별(500, 1000, 1700/mL)로 변화시켜가며, 노출시간 1, 3, 5, 7, 10, 15, 20분에 따라 진행하였다. 또한, 초음파 발진기로부터 직접 초음파에 노출시키는 단일 수조와 초음파 발진기로부터 이격거리 4 cm를 두고 초음파에 노출시키는 2중 수조에 대한 실험도 진행하였다. 본 연구에서 사용된 조류의 종은 규조류(Bacillariophceae)중 Melosira 속이다. 규조류는 염소 등에 의한 산화제 처리 시 염소에 대한 저항성이 있어 조류가 살균처리 후 여과지까지 유입되어 여과지 폐색을 유발하는 대표적인 조류이다. 본 연구결과, 초음파 노출 후의 규조류는 산화제에 의한 살균처리와 달리 형태가 완전히 파괴되어 분해되었으며, 초음파의 출력과 노출시간에 비례하여 조류제거효율이 증가하였다. 또한, 2중 수조에서 더 좋은 조류제거효율을 나타냈다.

• Journal of Korean Neurosurgical Society
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• 제53권3호
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• pp.194-196
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• 2013

Isolated abducens nerve paresis related to ruptured vertebral artery (VA) aneurysm is rare. It usually occurs bilaterally or ipsilaterally to the pathologic lesions. We report the case of a contralateral sixth nerve palsy following ruptured dissecting VA aneurysm. A 38-year-old man was admitted for the evaluation of a 6-day history of headache. Abnormalities were not seen on initial computed tomography (CT). On admission, the patient was alert and no signs reflecting neurologic deficits were noted. Time of flight magnetic resonance angiography revealed a fusiform dilatation of the right VA involving origin of the posterior inferior cerebellar artery. The patient suddenly suffered from severe headache with diplopia the day before the scheduled cerebral angiography. Neurologic examination disclosed nuchal rigidity and isolated left abducens nerve palsy. Emergent CT scan showed high density in the basal and prepontine cistern compatible with ruptured aneurismal hemorrhage. Right vertebral angiography illustrated a right VA dissecting aneurysm with prominent displaced vertebrobasilar artery to inferiorly on left side. Double-stent placement was conducted for the treatment of ruptured dissecting VA aneurysm. No diffusion restriction signals were observed in follow-up magnetic resonance imaging of the brain stem. Eleven weeks later, full recovery of left sixth nerve palsy was documented photographically. In conclusion, isolated contralateral abducens nerve palsy associated with ruptured VA aneurysm may develop due to direct nerve compression by displaced verterobasilar artery triggered by primary thick clot in the prepontine cistern.

• The Korean Journal of Pain
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• 제1권2호
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• pp.154-163
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• 1988

In 1983, Sten H$\ddot{a}$kanson first reported the clinical safety and efficacy of retrogasserian glycerol injection as a treatment of typical trigeminal neuralgia in 96 of 100 patients during a follow-up period of 1~6 years. Since September 1987, we have injected sterile pure glycerol into the trigeminal cistern using an anterior percutaneous approach via the foramen ovale (H$\ddot{a}$rtel route) for treatment of tic douloureux in 12 patients who were suffering from attacks pain of following discontinuation of carbamazepine. The results were as follows; 1) Eight patients were completely free from pain attacks with a single dose of glycerol (0.4 ml). The remaining four patients needed a second dose (0.4 ml) several days later following the single dose. The degree of patient's subjective satisfaction by those injections was very good in 11 and fair in one. 2) During the follow-up period (1~13 months), persistent sensory deficit as determined by the pin prick test, appeared to be mild in 10 and moderate in one patient. There was no sensory deficit in one patient. further attacks of pain from those injections were still noted. 3) As a transient complication, there was headache in all patient, facial hematoma in 4, nausea and vomiting in two each, and vertigo and herpes simplex in one each. In conclusion, we confirmed that the above glycerol injections into the trigeminal cistern were clinically very effective as a treatment of tic douloureux even though the follow-up period was short.

• Applied Microscopy
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• 제22권2호
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• pp.46-65
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• 1992

In this study, we have made morphological and cytochemical observations to investigate the type of Golgi apparatus around the bile canaliculus. The animal (Wister, $220{\sim}250gm$) were divided into 4 groups; normal, hydrochol, colchicine and hydrochol-colchicine. The Golgi apparatus is classified into 16 different types from 4 different groups. In the normal group, we could observe 12 different types of the sixteen. Type I which showed convexed cisterns facing the bile canaliculi was most abundant of the types. In the hydrochol group, 14 types were observed. Type VII and type I showed convexed cisterns facing the bile canaliculus and were abundant. In the colchicine group, 11 different types were viewed and type XIV which showed intensely dilated cisterns without the polarity was predominant. In the hydrochol-colchicine group, we observed 3 different types. Type XIV clearly showed the highest percentage, although that type was less numerous in this group than in the colchicine group. In the hydrochol group, the Golgi apparatus showed a tendency to increase in numbers, while in the hydrochol-colchicine group the Golgi apparatus showed a tendency to decrease in numbers. The reactive products of thiamine pyrophosphatase and acid phosphatase were apparent over the distal Golgi cistern in the normal and hydrochol groups, but were decreased or not observed in the colchicine and hydrochol-colchicine groups. From the results, it is assumed that with the presence of the microtubule, Golgi cisterns are dilated with polarity after stimulation of secretion. Without the microtubule, the cistern becomes more intensely dilated and none polaric. Also the enzymes within the cisternal membrane become decreaed or absent and the Golgi apparatus decreases in numbers after activation of secretion.

• Journal of Korean Neurosurgical Society
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• 제64권1호
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• pp.110-119
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• 2021

Objective : Preoperative prediction of the arachnoid membrane descent in pituitary surgery is useful for achieving gross total removal and avoiding cerebrospinal fluid leakage resulting from tearing of the arachnoid membrane in the chiasmatic cistern. In this study, we analyzed the patterns of arachnoid membrane descent during or after pituitary tumor surgery and identified the factors related to this descent. Methods : Analysis was restricted to pituitary macroadenomas not extending into the third ventricle or over the internal carotid artery. To minimize confounding factors, patients who underwent revision surgery, those who had a torn arachnoid during operation or small medial diaphragma sellae (DS) opening, and subtotal resections were excluded. We enrolled 41 consecutive patients in this retrospective analysis. The degree of arachnoid descent was categorized using intraoperative videos. Preoperative magnetic resonance findings, including tumor height, suprasellar extension, and variables including DS area and medial opening size, tumor composition, and displacement of the pituitary stalk and gland were evaluated to determine their correlations with arachnoid membrane descent. Results : Arachnoid membrane descent was significantly correlated with DS area and medial opening size. Based on T2-weighted images (T2WI) magnetic resonance (MR) images, tumor composition was significantly associated with arachnoid membrane descent. Other factors were not significantly correlated with arachnoid membrane descent. Conclusion : T2WI of tumor composition and preoperative MR imaging of DS area and medial opening provided valuable information regarding arachnoid membrane descent. These parameters may serve as fundamental measures to facilitate complete resection of pituitary macroadenomas.

• Investigative Magnetic Resonance Imaging
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• 제21권3호
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• pp.195-198
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• 2017

Idiopathic brain herniation is a rare condition. We believe that this is the first reported case of idiopathic herniation of the lingual gyrus. The case involves a 57-year-old woman presenting with frontal headache without overt visual symptoms. Magnetic resonance imaging (MRI) revealed an idiopathic herniation of the lingual gyrus of the occipital lobe extending into the quadrigeminal cistern. No other adjacent intracranial abnormalities were observed. Although some conditions may be considered in the differential diagnosis, accurate diagnosis of idiopathic brain herniation in medical practice can prevent unnecessary additional imaging procedures and invasive open biopsy in patients with typical imaging findings.