• Journal of Chest Surgery
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• v.37 no.9
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• pp.813-816
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• 2004

The conformation of traumatic diaphragmatic rupture is frequently difficult, even if radiologic evaluation has been performed. A 37-year old man with multiple trauma was suspicious with diaphragmatic rupture. The diaphragmatic rupture could not be confirmed with chest CT. We decided thoracoscopic operation for diagnosis. Diaphragm was ruptured about 8 cm length involving entering site of phrenic none into diaphragm and diaphragmatic paralysis was combined. We made 5 cm sized working window additionally. Ruptured diaphragm was repaired by continuous suture and plication of diaphragm was performed. Postoperative result was good at chest radiogram after three monthes.

• Journal of Chest Surgery
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• v.35 no.9
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• pp.697-700
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• 2002

Primary malignant melanoma of the mediastinum is extremely rare : To date, there have been only 8 cases reported in the literature. We report a case of a 50-year-old woman presented with an anterior mediastinal mass. The mass invaded the lung parenchyme of right upper lobe, which was wedge-resected with the mass. Microscopically, spindle or polygonal tumor cells with prominent nucleoli and intracytoplasmic melanin pigments are characterized and Fontana stain confirmed the presence of melanin pigment. Immunohistochemical studies showed diffuse positive staining for HMB45, S100 protein and vimentin, which further suggested melanoma.

• Journal of Chest Surgery
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• v.30 no.4
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• pp.441-444
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• 1997

Pure lipoma, originating from the trachea is a very rara disease entity A-37-ycar-old-male patient had suf'leered from intermittent episodes of dyspnea and has been treated under the diagnosis of bronchial asthma for 6 months. On chest CT scan and bronchofiberscopic examination, a round mass with the pedunculated neck was found in the mid-portion of the membranous portion of the intrathoracic trachea. Under the guide of fiberoptic bronchoscope, the mass was extirpated using polypectomy w re loop and eletrocauterization . He was discharged without any events on third postoperative day of operation and has been well without recurrence for 6 months.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.01a
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• pp.31-32
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• 2021

신종 코로나바이러스 감염증(Coronavirus disease 2019; COVID-19)이 빠르게 확산됨에 따라 세계적인 전염병 대유행인 팬데믹(Pandemic)으로 선언되었다. 감염자들은 꾸준히 증가하고 있고 최근에는, 무증상 감염자들이 나타나고 있어 의심 환자를 조기에 판단하고 선별할 수 있는 기술이 필요하다. 본 논문에서는 흉부 방사선 검사(chest Radiography; CXR) 영상을 딥러닝(Deep Learning)하여 정상인, 폐렴 환자, 코로나바이러스 감염자를 분류할 수 있도록 한다.

• Journal of Chest Surgery
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• v.43 no.4
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• pp.399-403
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• 2010

Background: Video-Assisted Thoracic Surgery can be performed with the lung collapsed. During the procedure, pleural adhesion may result in lung injury, bleeding, and thoracotomy conversion. Identifying the presence of pleural adhesion before surgery can make it easy to plan trocar introduction and perform the procedure. Material and Method: Between June 2009 and November 2009, we performed ultrasound in 24 patients to detect pleural adhesion before surgery and compared the results with the operative findings. We primarily examined the lateral chest, where the trocar would be inserted, and, occasionally, the anterior or posterior chest. Result: Patient diseases were: 6 hyperhidroses, 8 interstitial lung diseases, 5 lung cancers, 2 mediastinal tumors, 1 peripheral pulmonary embolism, 1 metastatic lung cancer, and 1 sarcoidosis. Of the 22 patients who did not have pleural adhesions on ultrasound, four revealed mild adhesions not related to the trocar insertion sites. However, ultrasound showed pleural adhesions in two patients, consistent with the operative findings. There was no air leak or thoracotomy conversion related with trocar insertion. Conclusion: Ultrasound requires only a few minutes to detect the presence of the pleural adhesion and was very useful in identifying the pleural adhesion before VATS.

• Journal of Chest Surgery
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• v.34 no.12
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• pp.937-943
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• 2001

Background: The aims of this study are to determine the predicting factors related with cardiovascular injuries in sternal fractures and to suggest the indication of emergency echocardiography. Material and Method: A retrospective review of the Ewha Womans University Mok-Dong Hospital trauma registry revealed 40 patients, that visited the hospital with a sternal fracture a over 5-year period. We analyzed 4 factors as predicting factors; 1) presence of restraint, 2) presence of associated injuries, 3) presence of a past medical history involving cardiovascular system, and 4) Revised Trauma Score(RTS). We, also, assessed the utility of conventional study methods involving cardiovascular injuries, such as ECG, chest X-ray, and enzyme level. Based on the methods, we inferred an indication for emergency echocardiography in sternal fractures. Result: Statistically significant predicting factors were the presence of a past medical history involving cardiovascular system and abnormal RTS on admission. Usage of emergency echocardiography depended upon the predicting factors and the results from conventional evaluations. We can now suggest the indications of emergency echocardiography in sternal fractures as 1) if more than two studies reveal abnormality without any significant predicting factors, and 2) if more than one study reveals abnormality with any significant predicting factors. Conclusion: The past medical history involving cardiovascular system and initial vital signs imply the presence of cardiovascular injuries in sternal fractures. And if needed, emergency echocardiography should be performed.

• Journal of the Korean Society of Radiology
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• v.5 no.5
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• pp.255-260
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• 2011

We wanted to evaluate the usefulness of three-dimensional reconstructive images using computed tomography for rib fracture patients. The reconstruction used in clinical multi planar reformation(MPR), volume rendering technique(VRT), and image data using quantitative methods and qualitative methods were compared. Much more, the artifact shadow was minimized to reconstruct with 3D volumetric image by using an law data in the analysis of the reconstructive image and chest CT scan of the evaluation result fractures of the thoracic patient. And we could know that the fractures of the thoracic determination and three dimension volume image reconstruction time were reduced.

• Journal of Chest Surgery
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• v.32 no.7
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• pp.671-674
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• 1999

At OPD follow-up in December 1998, chest x-ray of a 42-year-old female showed a solit ary pulmonary nodule at a superior basal segment in the right lower lobe. After percut aneous transthoracic needle aspiration failure, wedge resection of the superior basal segment of lower lobe in right lung was performed for diagnosis and therapy. Three years ago, she had received surgery to remove a mass in the left buttock. The mass was pathologically diagnosed as malignant fibrous histiocytoma. She subsequently received 4500 rad radiotherapy for 35 days. Pathology confirmed metastatic malignant fibrous histiocytoma of the lung.

• The Journal of the Korea Contents Association
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• v.9 no.3
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• pp.225-231
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• 2009

The purpose of the current study was to compare radiation dose of 64MDCT performed with automatic exposure control (AEC) with manual selection fixed tube current. We evaluated the CT scans of phantom of the chest and abdomen using the fixed tube current and AEC technique. Objective image noise shown as the standard deviation of CT value in Hounsfield units was measured on the obtained images. Compared with fixed tube current, AEC resulted in reduction of the chest and abdomen in the CTDIvol (35.2%, 5.9%) and DLP (49.3%, 3.2%). Compared with manually selected fixed tube current, AEC resulted in reduced radiation dose at MDCT study of chest and abdomen.

• Proceedings of the KTCVS Conference
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• 1998.10a
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• pp.128-128
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• 1998