거대 장간막 지방종 1 예

최수윤,김홍,홍정,Choi, Su-Yun,Kim, Hong,Hong, Jeong 대한소아외과학회 2004 소아외과 Vol.10 No.1

Visceral lipoma originating from the mesentery is very rare in childhood. A 29-month-old male presented with painless abdominal distension. Abdominal ultrasonography and CT revealed a huge multilobulated hypodense mass in the peritoneal cavity. Exploratory laparotomy showed a $26{\times}25{\times}5cm$ sized encapsulated, lobulated, homogenous mass, which originated from the transverse mesocolon. Histologic examination revealed a lipoma. The postoperative course was uneventful.

유방암의 골전이에 대한 치료

최수윤 ( Su Yun Choi ),최원혁 ( Won Hyuk Choi ),박찬흔 ( Chan Heun Park ) 대한임상종양학회 2008 Korean Journal of Clinical Oncology Vol.4 No.1

갑상선 유두암 환자의 추적 관찰의 최근 경향

최수윤 ( Su Yun Choi ),최원혁 ( Won Hyuk Choi ),박찬흔 ( Chan Heun Park ) 대한임상종양학회 2008 Korean Journal of Clinical Oncology Vol.4 No.1

갑상선 협부내 유두암의 임상병리학적 특성

최수윤(Su Yun Choi),김준석(Jun Suk Kim),소의영(Euy Young Soh),박찬흔(Chan Heun Park) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.78 No.2

Purpose: Surgical approaches for papillary thyroid carcinoma remain controversial. Moreover, previous reports regarding surgical strategy for papillary carcinoma of thyroid isthmus are very few. The aims of this study are to analyze the clinicopathologic features of papillary thyroid carcinoma of the isthmus and to develop more appropriate surgical strategies. Methods: Prospectively, papillary carcinoma arising thyroid isthmus (n=35) was included in this study from June 2006 to December 2008. All of the patients had total thyroidectomy with bilateral central compartment node dissection performed. Lateral nodes were sampled for frozen biopsy when metastasis was suspected by preoperative study. Thirty-five patients, who had unilateral papillary thyroid carcinoma, had total thyroidectomy with bilateral central compartment node dissection as control group and compared with papillary thyroid carcinoma of isthmus. Results: Lymph node metastasis was higher than control group in patients of isthmus cancer (51% vs 20%, P<0.05). Capsular invasion and multifocality observed in 63% and 23% respectively, but there was no significant difference compared to control group, statistically. Capsular invasion showed a positive correlation with lymph node metastasis by univariate and multivariate analysis. Analysis of ipsilateral nodal metastatic distribution revealed no definite metastatic pattern. Tracheal adhesion was observed in 4 cases of isthmus cancer group. Conclusion: In conclusion, it is recommended that bilateral CCND is needed as an appropriate primary surgical procedure for localized papillary carcinoma of thyroid isthmus.

선천성 횡격막 탈장 수술 후 장기간 폐기능에 대한 고찰

최수윤(Su Yun Choi),이호원(Ho Won Lee),홍정(Jeong Hong) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.2

Purpose: Congenital diaphragmatic hernia is an uncommon cause of respiratory distress in newborn infants and initially characterized by severe restrictive lung dysfunction. The problems of initial management and short-term prognosis have been well reported. However, long-term outcome has not been clearly defined. We studied the late respiratory problems and lung function after repair of congenital diaphragmatic hernia. Methods: Fourteen patients who had repaired congenital diaphragmatic hernia at Ajou University from January 1995 to August 2009 were included for this study. Results: Six cases (42.8%) showed late respiratory problems including recurrent bronchiolitis, pneumonia, bronchial asthma and prolonged chest wall retraction. Lung perfusion scan showed a perfusion defect in 1 case whose mean perfusion to the operated side was lower than the unaffected lung. Pulmonary function test showed restrictive pulmonary insufficiency in 2 cases. The cases with the late pulmonary problems revealed more restrictive pulmonary insufficiency compared to those without. The prolonged time taken to surgery from diagnosis, prolonged intensive care time, and prolonged ventilator care after surgery have been found to be the determinants of the impaired pulmonary functions. Conclusion: In summary, a portion (about 20%) of the patients with congenital diaphragmatic hernia showed impaired pulmonary function, even when they had no apparent respiratory symptom or limitations of activities. From these results, regular long-term follow-up of lung function is required postoperatively in patients with congenital diaphragmatic hernia, especially in cases with the aforementioned risk factors.

글자책 읽기 후 음운인식 활동이 유아의 음운인식 발달에 미치는 영향

최수윤(Choi, Su Yun),김민진(Kim, Min Jin) 한국어린이미디어학회 2016 어린이미디어연구 Vol.15 No.3

본 연구의 목적은 글자책 읽기 후 음운인식 활동이 유아의 음운인식 발달에 미치는 영향을 알아보는데 있다. 연구 대상은 서울시에 G구에 소재하고 있는 S 유치원과 Y유치원의 만 3세 유아 62명(실험집단 20명, 비교집단 21명, 통제집단 21명)이었다. 실험집단 유아에게는 글자책 읽기 후 음운인식 활동을 실시하였으며, 비교집단 유아에게는 글자책 읽기 활동만 실시하였고, 통제집단 유아에게는 글자책을 읽지 않고 생활주제와 관련된 활동을 실시하였다. 연구결과를 살펴보면, 글자책 읽기 후 음운인식 활동을 실시하는 것이 글자책 읽기만 실시하거나, 글자책을 읽지 않고 생활주제와 관련된 그림책 읽기 활동을 하는 것 보다 유아의 음운인식 발달에 긍정적인 영향을 미치는 것으로 나타났다. 본 연구결과는 통해 글자책 읽기가 만 3세 유아의 음운인식 발달을 촉진할 수 있는 효과적인 방법임을 시사한다. 또한 글자책 읽기만을 하기 보다는 확장활동으로 음운인식활동을 실시할 경우 유아의 음운인식 발달을 극대화할 수 있음을 시사한다. The purpose of this study is to propose available activities at the sites of early childhood education by analyzing effect that phonological awareness activities using letter books have on children’s phonological awareness ability. The test treatments were conducted throughout a total of 16 times for six weeks from Sep. to Oct. in 2014. Young children of the test group conducted phoneme awareness activities after reading letter books. Young children of the comparison group conducted only reading of letter books. Young children of the control group implemented activities according to living subjects. After the test treatments, to find out the effect that phonological activities using letter books have on the phoneme awareness ability, the post-test was conducted. From conducting one-way ANOVA about syllable dropping, syllable distinction, phoneme counting, phoneme dropping, phoneme synthesis, and phoneme distinction as subordinate areas of phoneme awareness, differences among groups were analyzed. When the results of this study are summarized, they are like the next. First, it was shown that to conduct phonological activities using letter books positively influenced the phonological awareness ability of young children more than to conduct only reading letter books or to do activities related with living subjects without reading letter books. It was represented that to only read letter books had more positive effect on the phonological awareness ability than to do activities related with living subjects without reading letter books.

갑상선 여포암의 초기 증상으로서의 단발성 두개골 전이 1예

최수윤(Su-Yun Choi),차진우(jin Woo Cha),송선춘(Sun Chun Song),소의영(Euy Yong Soh),김장희(Hea Kim Jang) 대한두경부종양학회 2007 대한두경부 종양학회지 Vol.23 No.1

A 60 years old female patient presented with 8x6 cm sized painless oval mass in the left parietal region. She had left lobectomy of thyroid gland 10 years ago. Cranial CT, MRI, FGD PET-CT showed a solid mass which invaded left parietal bone. After embolization, craniectomy with tumor excision was performed. Histological examination revealed metastatic follicular cancer originated thyroid gland, with vascular and dura invasion. Postoperatively, neck CT showed right thyroid multiple nodules and right level III multiple lymph node enlargement. Thyroid function test was normal, but level of thyroglobulin was high (72ng/ml). So she had right lobectomy of thyroid gland with lymph node dissection under a diagnosis of follicular carcinoma. But histological examination revealed adenomatous hyperplasia and not lymph node metastasis. After operation, she received radioiodine therapy of 150mCi and then the level of thyroglobulin normalized (8.4ng/ml). The patient is under follow-up since she had operation 4 months ago.

차량용 선루프 시스템의 구조해석 신뢰성 고찰Ⅱ

최규석(Gyuseok Choi),신동완(Dongwan Shin),최수윤(Suyoon Choi),정선기(Sunkee Jung) 한국자동차공학회 2016 한국자동차공학회 부문종합 학술대회 Vol.2016 No.5

The automotive sunroof system has many benefit that are able to control ventilation and brightness. Kinds of auto motive sunroof system are Panorama sunroof, normal sunroof type. Recently, strength in sunroof system with the growth of the global automotive industry are one of the most important issues. Many studies have been carried out to improve sunroof system’s strength. In the paper, the structural analysis on close, open condition of normal sunroof type is carried out. The close and open condition of automotive sunroof Assy are verified by comparing structural analysis results with experimental data obtained by strength tester. All kinds of influence factors affecting the sunroof system stiffness is confirmed by simulation and test. A FEM model of sunroof system is established for analyzing the strength of sunroof system by using Abaqus program. In the paper, method of structural analysis and strength test are proposed for evaluation of sunroof system’s close and open condition.

차량용 선루프 시스템의 구조해석에 대한 신뢰성 고찰

최규석(Gyuseok Choi),신동완(Dongwan Shin),최수윤(Suyoon Choi),정선기(Sunkee Jung) 한국자동차공학회 2015 한국자동차공학회 학술대회 및 전시회 Vol.2015 No.11

The automotive sunroof system has many benefit that are able to control ventilation and brightness. Kinds of auto motive sunroof system are Panorama sunroof, normal sunroof type. Recently, strength in sunroof system with the growth of the global automotive industry are one of the most important issues. Many studies have been carried out to improve sunroof system’s strength. In the paper, the structural analysis on normal sunroof type is carried out. The sunroof Assy, movable glass sub Assy and Frame sub Assy are verified by comparing structural analysis results with experimental data obtained by strength tester. All kinds of influence factors affecting the sunroof system stiffness is confirmed by simulation and test. A FEM model of sunroof system is established for analyzing the strength of sunroof system by using Abaqus program. In the paper, method of structural analysis and strength test are proposed for evaluation of sunroof system’s performance.

위암에서 복강경 위절제술의 현황

최원혁 ( Won Hyuk Choi ),최수윤 ( Su Yun Choi ),박찬흔 ( Chan Heun Park ) 대한임상종양학회 2008 Korean Journal of Clinical Oncology Vol.4 No.1