• Journal of Korean Neurosurgical Society
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• v.39 no.5
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• pp.393-395
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• 2006

Desmoplastic fibromas are rare intraosseous bone tumors. They are benign but locally aggressive and frequently found in the long bones and mandible. We report radiographic and histopathologic finding of a case desmoplastic fibroma involving right temporal skull bone. A 53-year-old woman presented at our hospital complaining of continuous right side headaches for a year. Simple skull X-ray film showed $3{\times}2.5cm$ lytic lesion with mild sclerotic margin on right temporal area. A large craniectomy 1cm lateral to margin was fashioned. The resected mass showed encapsulated mass colored white gray. Histologic diagnosis was compatible with that of a the desmoplastic fibroma. There was no evidence of recurrence during the 15months of follow-up period.

• Journal of Korean Neurosurgical Society
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• v.29 no.6
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• pp.826-831
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• 2000

The major indication of endoscope in neurosurgical field is intraventricular procedures. Recently, it can be used selectively in the intraaxial mass lesion associated cavity. For example, cystic mass, with liquefied necrosis, and blood clot can be approached with this technique. The authors present its usage in brain abscess ruptured into lateral ventricle. The neuroendoscope was introduced into abscess cavity through stereotactic guidance, the pus was then removed through continuous irrigation and suction under direct video visualization. The intraventricular pus was also cleaned through gentle, direct endoscopic irrigation and suction. The postoperative clinical course was uneventful. Brief overview is given for this intraaxial neuroendoscopic procedure.

• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.1756-1760
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• 2006

LTPS technology based on SLS Crystallization was intensively reviewed. LTPS structure produced by SLS crystallization is composed of much larger grains compared with conventional ELA crystallization structure, which can give higher TFT performances. However, TFT performance uniformity and anisotropy problem should be solved for it to be used in mass production. TFT performance uniformity was from main grain boundary position and could be solved by equal defect area structure $(EDAS^{TM})$. TFT performance anisotropy could be also solved by multi-channel (MC) structure that can make parallel component in perpendicular channel direction. The higher TFT performances from SLS technology can make superior optical and/or electrical properties and has been adopted in mass production successfully.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.33 no.3
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• pp.260-262
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• 2007

Nearly 45% of all neurilemmoma occur in the head and neck area, but only 1% have an intraoral origin. The authors report two cases of uncommon neurilemmoma of the tongue. Both of them presented with a mass on the lateral border of the tongue, which was noted several days before. The lesions of tongue appeared as smooth-surfaced, well-circumscribed mass. They were excised under general anesthesia and diagnosed as neurilemmoma on histopathologic examination.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.04a
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• pp.83-88
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• 2013

The purpose of this study is to develop the algorithm for dynamic interaction analysis of submerged floating tunnel and vehicles. The dynamic behavior characteristic of submerged floating tunnel is certainly different with general structures, because the submerged floating tunnel is floating in the middle of water, and subjected to constant buoyance. Therefore the analyses in various aspects should be carried out to secure structural stability and practicality of structures. To conduct the dynamic interaction analysis, the structure is modeled by commercial FEM program ABAQUS to investigate modal characteristic. Also the added mass concept is applied to represent the inertial force by a fluid, and then dynamic interaction analyses are conducted with superposition method when the KTX is moving along the submerged floating tunnel. And the time histories are presented for vertical and lateral displacement at the center of the tunnel.

• Journal of Chest Surgery
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• v.26 no.12
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• pp.965-968
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• 1993

Primary benign tracheal tumors are exceedingly rare and leiomyoma has the least frequency among them. It is important to recognize early without misdiagnosis such as asthma because it is curable. A 41 year-old female was admitted for dyspnea and choking since November 1991. Under the impression of asthma, she received medication. Symptom was not improved and thus chest CT scan was performed. There was endotracheal tumor mass which was located just above the carina and arose from the right lateral tracheal wall with broad base. We successfully resected the tumor mass including trachea and the defected area of trachea was reconstructed with autologous graft using pericrdium & rib cartilage. During the follow up period, no complication was developed.

• Journal of Chest Surgery
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• v.22 no.6
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• pp.1061-1069
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• 1989

A case of liposarcoma was reported in 52 year-old female. She had the operation history due to mediastinal lipoma at other Hospital before 26 months ago. Chest X-ray revealed a huge soft tissue mass- density at the entire right lung field, and left middle and lower lung field at admission. At the lateral film, the mass was located in the anterior and middle mediastinum. Transsternal bilateral thoracotomy was performed, followed by extirpation of liposarcoma, wedge resection of superior vena cava, angioplasty of superior vena cava, and then partial pericardiectomy. The post-operative treatment was 5500 rad irradiation. Post-operative course was uneventful, that was noticed by OPD follow-up for 10 months. Primary liposarcoma of the mediastinum is very rare tumor. This tumor grows to an enormous size, and symptoms are referable to compression of the contiguous intrathoracic structures. The treatment of choice is surgery in all cases. Such an approach serves to establish a tissue diagnosis, to relieve the patients* symptoms, and may results in a cure sometimes. Radiotherapy or/and chemotherapy seems to be ineffective, but should be further studied.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1972.03a
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• pp.16.2-16
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• 1972

Persistance of developmental remnants during fetal life may be attributed to congenital cysts and fistulas in the neck, which are experienced rather rarely. Recently authors have experienced three cases of progressive increased tumor mass in the lateral side of the neck and four cases of tumor mass in the suprathyroid region. We have performed surgical removal under the diagnosis of branchial cysts and thyroglossal duct cysts, respectively. The biopsy specimens were confirmed by histopathological study.

• Journal of Korean Neurosurgical Society
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• v.44 no.5
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• pp.345-347
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• 2008

We report a case of trigonal cavernous malformation (CM) radiologically mimicking meningioma. The computed tomographic (CT) head angiography and magnetic resonance imaging (MRI) showed a partially calcified lesion with slight contrast enhancement located in the area of the left atrium of lateral ventricle. The lesion was completely removed using microsurgery with a parieto-occipital transcortical approach. The resected mass was histologically confirmed as CM. CM should be considered as differential diagnosis in case of the atrial mass lesion due to lack of hemosiderin ring characteristically seen other seated CM.

• Korean Journal of Bronchoesophagology
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• v.5 no.1
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• pp.85-89
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• 1999

Neurilemmoma is a benign, well-encapsulated neurogenic tumor that arises in cranial, peripheral, or autonomic nerves that have nerve sheaths containing schwann cells. From 16 to 45% of all neurilemmoma cases occur in the head and neck region and only about 4% of those cases are found in the nose and paranasal sinuses, but very rarely found in the nasal septum. Recently, we experienced a case of isolated neurilemmoma which arose from the nasal septum of a 30-year-old female patient who complained of nasal obstruction and postnasal drip. The mass was broadly based on the right anterior portion of the nasal septum and confined to the nasal cavity, displacing the lateral wall of the nasal cavity and middle turbinate, laterally and posteriorly, respectively. The tumor mass was completely excised through transnasal endoscopic surgery under general anesthesia. The final pathological diagnosis viewed under a microscope after H&E and anti S-100 protein stain was a benign neurilemmoma in which Antoni A type and B type both existed. This report presents a case of neurilemmoma which arose from the nasal septum with reviews of the clinicopathologic features.