• 대한수의학회지
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• 제47권3호
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• pp.309-314
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• 2007

A 7-year-old, intact female Korean Jindo dog was referred due to ataxia and pain on palpation of the thorax. Radiograph, echocardiography and computed tomogram revealed a mass on the heart base region and osteolytic change of fifth thoracic (T5) vertebra. At necropsy, a firm, encapsulated and round mass was seen arising from the heart base region surrounding the ascending aorta and pulmonary artery. Histopathologically, nests of cuboidal and polyhedral cells having abundantly granular and eosinophilic cytoplasm with round to oval nucleus were separated by fibrous septa. Immunohistochemistry using chromogranin A revealed that tumor cells were originated from neuroendocrine organ and metastasized into some organs including lung, spleen, liver, kidney and T5 vertebra. By electron microscopy, we found the electron-dense and membrane-bound granules in cytoplasm of the tumor cells. This study provides the uncommon evidence that aortic body tumor metastasized to both multiple organs and bone.

• Journal of Korean Neurosurgical Society
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• 제30권5호
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• pp.657-661
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• 2001

Intracranial giant aneurysms have been known to cause clinical signs and symptoms, either by rupture, compression of surrounding structures, repeated minor leakage, or cerebral ischemia due to thromboembolism. A giant aneurysm which manifests only a seizure disorder comprises relatively few contributions. The authors present a case of a giant, unruptured aneurysm solely presenting with generalized tonic-clonic type seizure in a 43-year-old man. Brain computed tomogram(CT) and 3-D CT angiogram demonstrated a huge calcified aneurysm at the bifurcation of right middle cerebral artery. Complete neck clipping and aneurysmectomy followed by uneventful neurologic recovery.

• Journal of Korean Neurosurgical Society
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• 제47권3호
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• pp.221-223
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• 2010

C1 lateral mass and C2 pedicle (C1LM-C2P) fixation is a relatively new technique for atlantoaxial stabilization. Complications from C1LM-C2P fixation have been rarely reported. The authors report unilateral rod migration into the posterior fossa as a rare complication after this posterior C1-C2 stabilization technique. A 23-year-old man suffered severe head trauma and cervical spine injury after vehicle accident. He was unconscious for 2 months and regained consciousness. He underwent C1LM-C2P fixation for stabilization of type II odontoid process fracture described by Harms. The patient recovered without a major complication. Twenty months after operation, brain computed tomogram performed at psychology department for disability evaluation showed rod migration into the right cerebellar hemisphere. The patient had mild occipital headache and dizziness only regarding the misplaced rod. He refused further operation for rod removal. To our knowledge, this complication is the first report regarding rod migration after Harms method. We should be kept in mind the possibility of rod migration, and C1LM-C2P fixation should be performed with meticulous technique and long-term follow-up.

• Journal of Chest Surgery
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• 제37권4호
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• pp.386-389
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• 2004

하행 괴사성 종격동염은 이완율과 사망률을 감소시키기 위하여 조기 진단과 적극적인 치료를 요한다. 적절한 외과적 배농술, 광범위한 괴사조직의 변연 절제와 절제술, 혹은 종격동-흉강 세척술 없이 정주 항생제 사용만으로는 효과적이지 못하다. 좌측 경부의 동통이 동반된 부종과 지속적인 고열을 주소로 38세 남자가 응급실을 내원하였다. 컴퓨터단층촬영상 좌측 기관지 주변, 상 종격동, 전 종격동의 농양 소견을 보여 응급으로 횡경부 종격동 절개를 통하여 26 Fr. 흉관을 이용한 종격동 배농술과 펜로즈 배농관을 이용한 우측 기관지 주변부 배농술을 실시하였다. 균 배양 검사 결과 이스트가 동정되었다. 배농관은 점차 절단하면서 술 후 39일째에 제거할 수 있었다.

• Tuberculosis and Respiratory Diseases
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• 제70권6호
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• pp.516-520
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• 2011

Bronchial carcinoid tumor accounts for less than 5% of all primary lung tumors in adults. Although surgical resection is the treatment of choice, here we report a case of bronchial carcinoid tumor treated with flexible bronchoscopic resection. A 19-year-old-man presented with a history of wheezing with dyspnea for six months. A simple chest x-ray showed no abnormal findings, but a pulmonary function test showed a moderate obstructive lung disease pattern without a bronchodilator response. A computed tomogram of the thorax revealed an enhanced $15{\times}12$ mm nodule in the left main bronchus. Bronchoscopic examination showed a polypoid mass with a stalk in the left main bronchus, which almost completely occluded the left main bronchus. Histopathology of the resected specimen revealed a bronchial carcinoid tumor. We treated the carcinoid tumor with a flexible bronchoscopic resection. During the follow up period of 6 months, the previous tumor didn't relapse. Initial bronchoscopic resection should be considered when bronchial carcinoid tumor can be approached by bronchoscopy.

• 대한기계학회논문집B
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• 제30권11호
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• pp.1051-1056
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• 2006

The mean and RMS velocity field of the respiratory gas flow in the human airway was studied experimentally by particle image velocimetry (PIV). Some researchers investigated the airflow for the mouth breathing case both experimentally and numerically. But it is very rare to investigate the airflow of nose breathing in a whole airway due to its geometric complexity. We established the procedure to create a transparent rectangular box containing a model of the human airway for PIV measurement by combination of the RP and the curing of clear silicone. We extend this to make a whole airway including nasal cavities, larynx, trachea, and 2 generations of bronchi. The CBC algorithm with window offset (64 $\times$ 64 to 32 $\times$ 32) is used for vector searching in PIV analysis. The phase averaged mean and RMS velocity distributions in Sagittal and coronal planes are obtained for 7 phases in a respiratory period. Some physiologic conjectures are obtained. The main stream went through the backside of larynx and trachea in inspiration and the frontal side in expiration. There exist vortical motions in inspiration, but no prominent one in expiration.

• Journal of Yeungnam Medical Science
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• 제21권2호
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• pp.215-223
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• 2004

실리콘의 부적절한 피하 주입으로 발생한 폐색전증의 방사선학적 특징은 초기에는 호흡기 증상만 보이지만 염증 매개성 반응이 진행함에 따라 양측 폐 침윤이 급격히 진행하는 것을 볼 수 있었다. 또한 실리콘의 비중이 혈액보다 낮아 중력 비의존성 분포를 보임을 알 수 있었고, 이는 기존의 다른 원인에 의한 폐색전증과 구분되는 소견이다.

• Journal of Trauma and Injury
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• 제19권1호
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• pp.28-34
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• 2006

Purpose: In maxillofacial surgery, proper preoperative diagnosis is very important in achieving good postoperative results. Although conventional CT scans are useful for visual representations of fractures, they cannot provide direct guidance for reconstructing facial bone fractures. However, the recent technology of multislice scanning has brought many clinical benefits to CT images. Direct correlations can be made between preoperative imaging data and operative planning. The aim of the current study is to evaluate the differences between conventional CT and multidetective three-dimensional CT(3D MDCT) measurements in craniofacial deformities. Methods: From January 2005 to November 2005, MDCT scans of 41 patients were evaluated by comparing them with conventional CT scans. The 3D MDCT images were assessed and reviewed by using a simple scoring system. Results: The 3D MDCT scans offered easy interpretation, facilitated surgical planning, and clarified postoperative results in malar complex fractures, mandibular fractures, and extensive maxillofacial fractures and cranioplasty. However, 3D MDCT images were not superior to conventional CT scans in the diagnosis of blowout fractures. Conclusion: In spite of its limitations, the 3D MDCT provided additional and more comprehensive information than the conventional CT for preoperative assessment of craniofacial deformities. Therefore, the 3D MDCT can be a useful tool for diagnosis and systematic treatment planning in craniofacial skeletal deformities.

• Journal of Chest Surgery
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• 제37권2호
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• pp.173-175
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• 2004

원발성 폐동맥 육종, 특히 폐동맥 판막에서 기원한 폐동맥 육종은 극히 드물다. 35세 남자 환자가 노작성 호흡곤란과 전신무력감을 주소로 입원하였다. 흉부 컴퓨터 단층촬영, 흉부 자기공명영상, 심장초음파 검사, 폐동맥 조영술상 주 폐동맥 및 양측 폐동맥의 내강에서 커다란 종괴가 관찰되었다. 폐동맥의 원발성 악성 종양으로 생각하고 심폐순환하에 절제를 시행하였다. 폐동맥 판막의 후엽에서 기원한 것으로 보이는 종괴가 폐동맥 판막의 하부에서부터 주폐동맥 및 양측 폐동맥까지 뻗어 있었고, 폐동맥 내막절제술을 통한 종괴의 절제 및 폐동맥 판막 치환술을 시행하였으며, 병리조직학적 검사에서 폐동맥 육종으로 진단되었다.

• Journal of Chest Surgery
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• 제40권5호
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• pp.392-394
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• 2007

14세 남자가 흉부 X-선 검사에서 이상이 발견되어 입원하였다. 흉부 컴퓨터단층촬영에서 전방부 종격동 및 비장에 $14\times14cm$ 및 $2\times2cm$크기의 낭성 병변이 보였다. 정중 흉골절개술을 통해 종격동의 병변을 완전 절제하였고, 최종 조직학적 진단은 낭성 림프관종이었다. 현재 수술 후 14개월째로 종격동에서 재발은 없고, 비장의 병변은 경과를 관찰 중이다.