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이성철,목우균,서정민,정성은,박귀원,김우기,Lee, Seong-Cheol,Mok, Woo-Kyun,Seo, Jung-Min,Jung, Sung-Eun,Park, Kwi-Won,Kim, Woo-Ki 대한소아외과학회 1995 소아외과 Vol.1 No.1
The incidence of Meckel's diverticulum(MD) in general population has been assessed as 2 percent. The major complications of MD are bleeding, perforation, and intestinal obstruction. In spite that the complication rate of Meckel's diverticulum is relatively high(about 4.2% during a lifetime), the preoperative diagnostic rate of complicated MD is very low. Authors investigated the clinical characteristics of complicated MD to improve the diagnostic rate. 16 patients with complicated Meckel's diverticulum who were operated upon at the Department of Pediatric Surgery, Seoul National University Children's Hospital from June 1985 to December 1993 were reviewed. Among the 16 patients with complicated MD, 12 patients(75%) were under 2 year-old and male were predominant(88%). The most common complication was bleeding patients with bleeding MD (8 cases) were diagnosed preoperatively as MD. 8 patients with other complications(perforation : 4 cases, obstruction : 4 cases) could not be suspected as complicated MD except one patient who had previous history of melena. These patients were diagnosed after exploratory laparotomy under the various impression other than MD. Among 12 patients with ulcer related complications such as bleeding and perforation, heterotopic gastric mucosa was found in 11 patients. In conclusion, in any children with unexplained acute abdomen, especially under 2 years old, complicated MD must be included in differential diagnosis. In children with obscure lower gastrointestinal bleeding, $^{99m}Tc$-pertechnetate scintigraphy is a useful diagnostic tool to rule out bleeding MD.
뇌실복강간 단락술(Ventriculoperitoneal Shunt)을 시행한 환자에서의 서혜부 탈장의 빈도와 특성
이성철,이혁준,김기홍,정성은,박귀원,김우기,Lee, Seong-Cheol,Lee, Hyuk-Joon,Kim, Ki-Hong,Chung, Sung-Eun,Park, Kwi-Won,Kim, Woo-Ki 대한소아외과학회 2000 소아외과 Vol.6 No.2
Ventriculoperitoneal shunt(VP shunt) for hydrocephalus is thought to inhibit the closure of processus vaginalis and promote inguinal hernia by increasing intraabdominal pressure. To estimate the patency rate of processus vaginalis and the incidence and characteristics of the inguinal hernia, 262 cases of VP shunt in early childhood between January 1980 and May 1998 at Seoul National University Children Hospital were reviewed retrospectively. Inguinal hernia developed in 28 cases(10.7 %), but six patients had an inguinal hernia before the VP shunt was placed. Patients who had a VP shunt before 6 months of age developed inguinal hernia in 16.2 %(12/74) of cases, patients shunted between 6 months and 2 years had an incidence of 12.4 %(11/89) and only 5.1 %(5/99) of patients operated upon after 2 years of age developed hernias. Twenty-two patients out of 256 cases (8.6 %) developed inguinal hernia after VP shunt, with male predominance(M : F=4.5:1). Eight patients developed inguinal hernia bilaterally(36.4 %). It is suggested that at least 14% of processus vaginalis is patent until 2 years old.
이성철,이현국,양석진,정성은,박귀원,김우기,Lee, Seong-Cheol,Lee, Hyeon-Kook,Yang, Suk-Jin,Jung, Sung-Eun,Park, Kwi-Won,Kim, Woo-Ki 대한소아외과학회 1997 소아외과 Vol.3 No.1
Eight pediatric patients with Peutz-Jeghers syndrome were treated from 1984 to 1994 at the Department of Surgery, Seoul National University Children's Hospital. We reviewed the clinical features of our own 8 cases as well as 56 cases reported in Korean literatures. The results were compared to those of western reports. Gastrointestinal complications in our series were more frequent than in the Korean series, but the distribution of polyps was similar. The Korean series showed the following characteristics compared to the western reports; demographic backgrounds were similar; gastrointestinal symptoms were more common; location of the polyp was more frequent in colon (2 times); and the most prevalent site of malignant change was the colon in Korean cases.
표준관입시험의 N값을 이용한 비배수전단강도 및 선행압밀응력의 추정
이성철,김지용,조성민,김태형,Lee, Sung-Cheol,Kim, Ji-Yong,Jo, Sung-Min,Kim, Tae-Hyung (사)한국토질및기초기술사회 2006 기술발표회 Vol.2006 No.-
This study researched N-Value, strength of clayey soil and preconsolidation pressure m order to variety application of standard Penetration test. We compared it makes on analysis of the relationship of the N-value and $q_u$ with relation formula is presented in existing, presented the estimated preconsolidation pressure by using the predicted undrained shear strength.
이성철,한원식,김기홍,정성은,박귀원,김우기,Lee, Seong-Cheol,Han, Won-Shik,Kim, Ki-Hong,Jung, Sung-Eun,Park, Kwi-Won,Kim, Woo-Ki 대한소아외과학회 2000 소아외과 Vol.6 No.1
Congenital esophageal stenosis (CES) is a narrowing of the esophageal lumen from birth. Three types of CES have been described; tracheobronchial remnants (TBR), membranous web (MW), and fibromuscular stenosis (FMS). We reviewed the clinical features and the surgical outcome of 14 patients, pathologically confirmed as CES. Nine patients had TBR, 3 FMS, and 2 MVV. The mean age at operation was 3.8 years. Five patients were boys and 9 girls. Four patients had other congenital anomalies. Segmental resection of the lesion and end to end anastomosis was utilized in all cases except one who underwent myotomy. The stenotic segment was located at the distal esophagus in all patients. There were 8 complications in 6 patients, but no mortality. The mean follow-up period was 68 months. There were no feeding problems but 3 patients had minor gastroesophageal reflux. Our result indicates that segmental resection and anastomosis is a satisfactory surgical procedure in the management of CES.
이성철 ( Seong Cheol Lee ),이호석 ( Ho Suk Lee ),정성은 ( Sung Eun Jung ) 대한외상학회 1990 大韓外傷學會誌 Vol.3 No.1
Intramural duodenal hematoma secondary to blunt abdomial trauma is a rare abdominal injury. Until early 1970s operation was preferred management. But after successful non-operative management of duodenal hematoma in 8 out of 9 children by Holgerson and Bis-hop in 1977 it is generally managed nonoperatively in children. But in 1988 Thoms and Ric-ketts reported 3 consecutive cases which they failed to manage nonoperatively and rec-ommeded surgical intervention when 10 days of medical management fails to achieve complete resolution. We experienced a natural course of duodenal obstruction by intramural hematoma and subsequent fibrosis which necessiated duodenojejunostomy 166 days after abdominal trauma in 7 year-old boy. We reviewed our case and agree with Thoms and Ricketts recommendation.
다기능·경량 하이퍼 콘크리트 성능에 따른 전달길이 및 균열폭에 대한 해석적 검토
이성철 ( Lee Seong-cheol ),이동민 ( Lee Dongmin ),유성원 ( Yoo Sung-won ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.1
최근 들어 세계 최고 수준의 첨단 나노기술을 접목하여 가벼우면서 강도가 높은, 열화 원인을 근본적으로 차단하는 다기능·경량 하이퍼 콘크리트(MLHC)에 대한 개발 연구가 활발히 진행되고 있다. 이 연구에서는 사용성 관련 MLHC에 요구되는 조건 중 사용성 검토에 필수적인 균열폭에 대해, MLHC의 탄성계수 및 부착강도의 변화에 따른 영향을 해석적으로 검토하였다. 검토결과, 일반 콘크리트 대비 탄성계수비 및 부착강도비가 감소할수록 전달길이 및 균열폭이 증가하는 것으로 나타나, MLHC의 탄성계수 및 부착강도에 대한 제한이 필요한 것으로 나타났다.