1.Clinical study of the congenital anomalies.
Korean Journal of Obstetrics and Gynecology 1992;35(12):1720-1729
No abstract available.
2."Diagnosis of Childhood Acetabular Dysplasia using Lateral Margin of the " Sourcil ".
Hui Taek KIM ; Jeung Il KIM ; Chong Il YOO
The Journal of the Korean Orthopaedic Association 1998;33(5):1351-1361
In the treatment of DDH, generally we have used the acetabular index (AI) and the center-edge (CE) angle as diagnostic factors for hip dysplasia. However, it is sometimes difficult to mark the exact lateral edge of the acetabulum to measure these factors due to indistinct bony shadows on the image of the dysplastic hip. The purpose of this study was to evaluate the lateral edge of the acetabulum to determine the location of the most accurate marking point on the plain radiograph. Using plain radiograph, we studied 53 patients with DDH which were treated with closed reduction. 26 patients were studied using plain radiograph and another method: 16 patients with 3- DCT, 4 patients with MRI, and 6 patients with arthrograph. According to this study, the most lateral bony margin of the acetabular roof on the plain radiograph indicates the antero-lateral portion of the acetabulum. The lateral edge of the sourcil indicates the lateral margin of the centro-lateral (mid-superior) portion of the acetabulum. The marking point on the lateral end of the sourcil reflects a dysplastic condition of the acetabulum, especially in the mid-superior portion of the acetabulum.
Acetabulum*
;
Hip
;
Hip Dislocation
;
Humans
;
Magnetic Resonance Imaging
3.Early Gastric Carcinoma with Hepatoid Differentiation: Report of a case with histotopographic analysis.
Gyeong Hoon KANG ; Chong Jai KIM ; Yong Il KIM
Korean Journal of Pathology 1991;25(6):594-600
A 56-year-old man received subtotal gastrectomy for an early gastric carcinoma type IIa+IIc with submucosal invasion. The tumor was made up of mixed papillo-tubular adenocarcinoma and solid carcinomatous portion, the latter comprising approximately four-fifths of the total tumor mass. The solid portion was confined within the submucosa and revealed a mixture of trabecular, compact and pelioid patterns of large polyhedra cells, resembling hepatocellular carcinoma of the liver(Edmondson-Steiner grade 2). Sinusoid-like vascular stroma of classical trabecular hepatocellular carcinoma intervened the tumor cell nests but was not associated with endothelial-cell lining. Immunohistochemical stainings with alpha-fetoprotein and alpha1-antitrypsin gave a strong reactivity in those areas of hepatoid differentiation and in the adjacent minute portion of adenocarcinoma. The findings suggest that a portion of gastric carcinoma may transdifferentiate into cells with hepatoid features along the line of endodermal lineage.
Male
;
Humans
;
Adenocarcinoma
;
Carcinoma, Hepatocellular
4.A clinical study for malunited fractures of the distal end of the radius.
Chong Il YOO ; Yong Jin KIM ; Yeong Ho KIM
The Journal of the Korean Orthopaedic Association 1991;26(3):779-788
No abstract available.
Fractures, Malunited*
;
Radius*
5.Changes of Respiratory Indices and Clinical Response to the Different Modes of Delivery for Administration of Surfactant Replacement Therapy in the Respiratory Distress Syndrome.
Beyng Il KIM ; Jung Hwan CHOI ; Chong Ku YUN
Journal of the Korean Society of Neonatology 1997;4(2):205-216
PURPOSE: Factors affecting the response to surfactant replacement therapy are considered as types of surfactant, and strategies of treatment including prophylactic vs rescue therapy, single vs multiple doses, methods of mechanical ventilation, and modes of surfactant delivery. Among those factors, response to surfactant replacement therapy according to the modes of surfactant delivery was rarely studied in the world. In preterm infants with RDS, we studied the efficacy and adverse effects of surfactant replacernent therapy according to the differences in the modes of surfactant delivery. METHOD: Preterm infant weighing 500-2,500g with RDS who required assisted ventilation were divided into two groups. One group is as follows five fractional doses with five positional changes after removal from ventilator by feeding tube technique. The other group is as follows; two fractional doses with two positional changes by side-port adaptor technique. Of the 30 infants enrolled, 15 were randomly assigned to each group. We compared the respiratory indices, chest radiologic response, clinical outcome after surfactant replacement, and adverse effects during dosing procedure. RESULT: There were no diffrences of patient profile between two groups. There were significant improvernent in FiO2, a/APO2, MAP, OI, and chest radiologic response following surfactant replacement therapy in both groups. No significant differences were noted in the adverse effects during dosing procedure and incidence of complication. CONCLUSION: In initial phase of RDS treatment with surfactant replacement therapy, two fractional doses with two positional changes by side-port adaptor technique improve respiratory indices, radiologic response without dernonstrable harmful effects as five fractional doses with five positional changes after removal from ventilator by feeding tube technique, however two fractional dosing procedure is more recommendable because of #more simple and convenient procedure.
Humans
;
Incidence
;
Infant
;
Infant, Newborn
;
Infant, Premature
;
Respiration, Artificial
;
Thorax
;
Ventilation
;
Ventilators, Mechanical
6.Meta-analysis of Impact of Neonatal Intensive Care on Neurodevelopmental Outocme of Very Low Birth Weight Infants.
Beyong Il KIM ; Jung Hwan CHOI ; Chong Ku YUN
Journal of the Korean Pediatric Society 1994;37(7):937-945
We analyzed neurodevelopmental outcome data of 36 selected studies. Data of individual studies were pooled by birth weight group: <800g, <1.000g, <1.500g and by time period of birth year: Period I (pre-intensive care era), 1960-67:Period II (beginning period of intensive care), 1968-76: and Period III (established period of intensive care), 1977-87. In all weight groups, survival and intact outcome rates based on live birth have progressively improved over the three period. The major neurodevelopmental handicap rate of the <1,500g decreased in Period III vs. Period I and Period II (66,70, and 45 per 1,000 live births in I, II, and III, respectively). However, the major handicap rate in the <800g and the <1,000g live births increased: in the <800g, from 48 per 1,000 live births in Period II to 101 in Period III and, in the <1000g, from 28 per 1,000 live births in Period I to 67 in Period II and 73 in Period III. Increases in major handicap rate in two lower weight groups were predominantly the effect of increasing number of survivors over these periods and had little to do with the change in handicap rates in the survivors. In the <1,500g, the magnitude of reduction in handicap rate in the survivors was sufficient to overwhelm the effect of increased survival, resulting in a reduction in the number of major handicapped children. We conclude that based on the currently avaiable reports, neonatal intensive care has provided very low birth weight infants with a reduction in mortality, an increase in intact outcome, and decrease in the number of major neurodevelopmentally handicapped children. We try to estimate the trend of major neurodevelopmental handicap and intactoutcome of infants with birth weights <1,500g in Korea and speculate that major handicap rate have progressively increased over the three period in spite of increase in intact outcome.
Birth Weight
;
Disabled Children
;
Humans
;
Infant*
;
Infant, Newborn
;
Infant, Very Low Birth Weight*
;
Intensive Care, Neonatal*
;
Korea
;
Live Birth
;
Mortality
;
Parturition
;
Survivors
7.A Clinical Survey of Abdominal Masses in the Neonate.
Beyong Il KIM ; Jung Hwan CHOI ; Chong Ku YUN
Journal of the Korean Pediatric Society 1989;32(7):926-932
No abstract available.
Humans
;
Infant, Newborn*
8.Morphologic Changes of Lung Parenchymal Tissue in Neonatal Rat Pups Under Chronic Hyperoxia.
Beyong Il KIM ; Jung Hwan CHOI ; Chong YUN
Journal of the Korean Pediatric Society 1994;37(8):1055-1064
We studied the effects of chronic hyperoxia (>95% oxygen for 14 days) in change of body weight, wet to dry lung weight ratio, and morphologic changes of lung tissue compared with that of room air (21% oxygen for 14 days) in Sprague-Dawley neonatal rat pups. The results were as follows: 1) In neonatal rat pups exposed to room air (normoxia group), body weight of initial 3 days of neonatal rat pups was 9.18 0.18g, and body weights of developing rat pups exposed to room air for 7, 10, 14 days were 14.07 1.90, 17.00 2.09, 23.07 1.93g respectively. In neonatal rat pups exposed to hyperoxia (hyperoxia group), body weight of initial 3 days of neonatal rat pups was 9.35 0.80 g, and body weights of developing rat pups exposed to hyperoxia for 7, 10, 14 days were 11.06 1.31, 12.64 1.77, 15,41 1.65 g respectively. These results suggest that changes of body weight in developing rat pups were stunted significantly in the hyperoxia group compared with normoxia group during 14days-experiment (p<0.01). 2) No appreciable difference of wet to dry lung weight ratio was noted at initial 3 days of neonatal rat pups between normoxia group and hyperoxia group, but considerably increased wet to dry lung weight ratio was noted significantly at 7 days of exposure in the hyperoxia group compared with the normoxia group (p<0.05). The difference of wet to dry lung weight ratio was not significant at 10, 14 days of exposure between normoxia group and hyperoxia group. These results suggested that relative water content of wet lung was at a peak at 7 days of exposure in hyperoxia group. 3) The lung from developing rat pups exposed to room air for 7 days had many small alveoli and numerous septal buds. However, in the lung from developing rat pups exposed to hyperoxia for 7 days, presence of pink staining material within the lumen of the air spaces (proteinaceous edema fluid) and increased interstitial cellularity due to infiltration by macrophages and neutrophils was observed, and these findings suggested acute exudative lung injury. 4) In most lungs from developing rat pups exposed to room air for 14 days, much increased alveolarization including the secondary septal bud formation was observed. However, in most lungs from developing rat pups exposed to hypeoxia for 14 days, increased septal and interstitial cellularity and thickness and interstitial fibrosis were observed significantly compared with normoxia group (p<0.01). In conclusion we could make a experimental animal model which had similar histopathologic finding of bronchopulmonary dysplasia in human infant and this model will be useful for research of pathogenesis of bronchopulmonary dysplasia.
Animals
;
Body Weight
;
Bronchopulmonary Dysplasia
;
Edema
;
Fibrosis
;
Humans
;
Hyperoxia*
;
Infant
;
Infant, Newborn
;
Lung Injury
;
Lung*
;
Macrophages
;
Models, Animal
;
Neutrophils
;
Oxygen
;
Pulmonary Edema
;
Rats*
;
Rats, Sprague-Dawley
9.Prognostic Indices in Surgical Treatments of Legg - Calve - Perthes Disease.
Hui Taeg KIM ; Pyung Ju YUN ; Chong Il YOO
The Journal of the Korean Orthopaedic Association 1997;32(5):1189-1198
Methods of management of Legg-Calve-Perthes Disease (LCPD) are at present controversial. Some practical prognostic indices were imperative for proper management of the disease. .We followed up on twenty LCPD patients-14 who underwent varization osteotomy of proximal femur and 6 who underwent pelvic innominate osteotomy or shelf procedure-for more than 3 years and analyzed the results using the Stulberg classification. There were three requirements for the hip to be included in this study: follow-up until residual stage occurred, Catterall group III or IV and complete clinical and radiological data. The purpose of this study-was to determine the validity of radiological and clinical factors in predicting prognosis in surgical treatments. Results of the evaluation were as follows; 1.Age was found to be an important prognostic index. Older children aged > 9 years tended to do worse than younger children (P<0.05). Other prognostic indices were not found to be statistically significant. 2. When Stulberg classification IV atients were considered, there were common factors in the children who were more than 9 years old, were of Catterall group IV, and late fragmentation stage disease with more than 1.5 of the lateral subluxation index, regardless of treatment. 3. Although Catterall's classification had been widely accepted, Catterall group III or IV seemed to be difficult to be distinguished. Many cases that had been regarded as Catterall group IV were proved to have intact posteromedial portion of femoral head later in residual stage. 4. Even though well-known prognostic indices were important in anticipating the results, we considered additional unknown biomechanical factors. In some cases continuous deformation of femoral head would not be prevented even though necrotic portion of femoral head was well contained by surgical treatment.
Child
;
Classification
;
Femur
;
Follow-Up Studies
;
Head
;
Hip
;
Humans
;
Legg-Calve-Perthes Disease*
;
Osteotomy
;
Prognosis
10.Reverse forearm flap as a soft tissue coverage after release of scar contracture of the hand.
Yong Jin KIM ; Dong Gi SHIN ; Chong Il YOO
The Journal of the Korean Orthopaedic Association 1992;27(7):1877-1884
No abstract available.
Cicatrix*
;
Contracture*
;
Forearm*
;
Hand*