1.Acute appendicitis in children.
Sang Won CHO ; Jung Youl HWANG
Journal of the Korean Surgical Society 1991;40(6):801-812
No abstract available.
Appendicitis*
;
Child*
;
Humans
2.Scintimetric Evaluation of Femoral Neck Fractures by Tc-99m-MDP: Experimental Study in the Mature Rabbits
Sung Jun HWANG ; Sang Won PARK ; Hong Kun LEE
The Journal of the Korean Orthopaedic Association 1987;22(5):1082-1089
In femorsl neck fracture, viability of the femoral head depends on the revascularization of the femoral head. The purpose of this study is to observe the effect of early fixation and anatomical reduction by measuring the Tc-99m-MDP uptake ratio of the femoral head in experimental animsls. Femoral neck region of 20 mature rabbits were osteotomized completely and divided into 2 groups ; each group consisted of 10 rsbbits. Group 1 had two Kirschner wire fixation after osteotomy and anatomic reduction. Group 2 had no fixation after osteotomy. The uptake ratio of Tc-99m-MDP of the femoral head in each group were measured st the intervals of 24 hours, 48 hours, 1 week, 2 weeks, 3 weeks, and 4 weeks, respectively. The results obtained were as follows ; 1. In experimental group 1, the mean uptake ratio of the femoral head was 0.72±0.13 at 1 day after operation, increased to a level of 1.44±0.14 at 1 week, increased to a maximal value of 2. 90±0.36 at 3 weeks and decreased to a level of 1.10+0.12 at 4 weeks. 2. In experimental group 2, the mean uptake ratio of the femoral head was 0.70±0.10 at 1 day, 0.64±0.13 at 1 week, decreased to a maximal value of 0.33±0.05 at 3 weeks and 0.47±0.05 at 4 weeks, showing decreased level below 1.0. The results suggest that early anatomicsl reduction and rigid fixation of femoral neck fracture is helpful for revascularization of the femoral head and prevention of non union.
Femoral Neck Fractures
;
Femur Neck
;
Head
;
Neck
;
Osteotomy
;
Rabbits
3.Malignant Osteoblastoma: A Case Report
Sung Jun HWANG ; Sang Won PARK ; In Sun KIM
The Journal of the Korean Orthopaedic Association 1988;23(1):307-312
Malignant osteoblastoma is very rare tumor which shows histological findings of an aggressive pattern and benign clinico-radiological features, and also called as aggressive or pseudomalignant osteoblstoma. The authors experienced one csse of malignant osteoblastoma involving diaphysis of left humerus in 22-year old man. The patient is healthy and maintains his normal activity without recurrence over five years after complete excision of cystic mass, curettage and bone graft.
Curettage
;
Diaphyses
;
Humans
;
Humerus
;
Osteoblastoma
;
Recurrence
;
Transplants
4.Carpal Injuries
Han Koo LEE ; Moon Sang CHUNG ; Sang Cheol SEONG ; Kyu Yub HWANG ; Jae Won LEE
The Journal of the Korean Orthopaedic Association 1986;21(1):73-86
In carpal injury, a good functional end result seems to correlate with final anatomic alignment of carpus after treatment. Some cases are often misdiagnosed and result in inadequate treatment. Forty six cases of carpal injuries were analysed which were treated for 9 years from 1975 to 1984 at the Department of Orthopedic Surgery, Seoul National University Hospital. The observations can be summarized as follows. 1. The male to female ratio was 3.5: 1 and 82% of total cases were in the third and fourth decades. 2. The most frequent cause of injury was fall from height with outstretched hand. 3. Trans-scaphoid perilunar dislocation and its variant were the most common diagnosis in this analysis. 4. All of the scapho-lunate dissociation showed volar flexion intercalated segmental instability with scapho-lunate gap more than 2 mm in our series. 5. In 11 cases of trans-scaphoid perilunar dislocation and its variant, carpal collapse was found in 10 cases. In 5 cases dorsiflexion intercalated segmental instability pattern and in one case volar flexion intercalated segmental instability pattern were found to be present. 6, There was an increase in scapho-lunate angle in all cases of dorsiflexion intercalated segmental instability, but a decrease in scapho-lunate angle is not a consistent finding in volar flexion intercalated segmental instability. 7. In 24 cases more than 6 months follow-up, excellent and good results were obtained in 20 cases. 8. As a result of above findings, authors conclude that scapho-lunate gap more than 2mm has diagnostic value in scapho-lunate dissociation but that dorsiflexion intercalated segmental instability or volar flexion intercalated segmental instability only means the changes in the relationship between carpal bones and does not have definite or specific diagnostic value for a specific carpal injury.
Carpal Bones
;
Diagnosis
;
Dislocations
;
Female
;
Follow-Up Studies
;
Hand
;
Humans
;
Male
;
Orthopedics
;
Seoul
;
Wrist
5.A Clinico-Epidemilological Study of 55 Cases of Chidhood Idiopathic Thrombocytopenic Purpura.
Won Ho KANG ; Myung Hee KOOK ; Yong Sang YOO ; Jae Suk MA ; Tai Ju HWANG
Journal of the Korean Pediatric Society 1987;30(11):1207-1212
No abstract available.
Purpura, Thrombocytopenic, Idiopathic*
6.Laboratory evaluation of blood coagulation system in FFP.
Sang Won CHO ; Gyeong Ran CHOI ; Tai Ju HWANG ; Dong Wook YANG
Korean Journal of Blood Transfusion 1992;3(1):35-40
No abstract available.
Blood Coagulation*
7.Surgical Experiences of Three Cases of Giant Pituitary Adenoma.
Hyun Won CHO ; Han Kyu KIM ; Yong Soon HWANG ; Tae Sang CHUN ; Hwa Dong LEE
Journal of Korean Neurosurgical Society 1990;19(8-9):1221-1230
Three cases of giant pituitray adenoma are reported. Two cases were operated by transsphenoidal approach and a case by transcranial approach. Transsphenoidal approach showed satisfactory results despite of marked suprasellar extension of tumors. We report rare giant pituitary adenomas with review of relevant literatures.
Adenoma
;
Pituitary Neoplasms*
8.A Case of Pruritic Folliculitis of Pregnancy.
Sang Min HWANG ; Eung Ho CHOI ; Won Soo LEE ; Sung Ku AHN
Korean Journal of Dermatology 1998;36(1):156-159
Pruritic folliculitis of pregnancy of pregnancy is a specific dermatoses of pregnancy which is characterized by erythematous follicular papules and pustules between the fourth and ninth month of pregnancy. It has usually resolved by 4 weeks of postpartum and has no adverse implications for mother and baby. We report a case of pruritic folliculitis of pregnancy in a 24-year-old primigravida woman who had had monomorphic erythematous follicular papules and pustules on her anterior chest wall and back. Histopathological findings of erythematous papules showed acute folliculitis and perifolliculitis. The skin lesions improved rapidly with 2 weeks of delivery without treatment.
Female
;
Folliculitis*
;
Humans
;
Mothers
;
Postpartum Period
;
Pregnancy*
;
Skin
;
Skin Diseases
;
Thoracic Wall
;
Young Adult
9.MAGNETIC OVERDENTURE.
Jung Won HWANG ; Sang Wan SHIN
The Journal of Korean Academy of Prosthodontics 1998;36(5):748-757
The stability and retention of mandibular complete denture have been a continuing problem for dentists and patients. Magnets have been investigated or used in clinical dentistry as retentive aids. The obvious advantages are that these attachments do not need spacial equipments or require frequent adjustment of replacement with use, and they likely transmit less lateral forces to the abutment. This articles discusses the scientific background and clinical application of high potency magnetic alloys in overdenture
Alloys
;
Dentistry
;
Dentists
;
Denture, Complete
;
Denture, Overlay*
;
Humans
10.Effects of Anticancer Agents on Cell Cycle Kinetics and Sister Chromatid Exchanges in Cultured Human Lymphocytes.
In Dam HWANG ; No Suk KI ; Won Kihl PARK ; Young Oh KIM ; Jeong Sang LEE
Korean Journal of Preventive Medicine 1987;20(1):1-9
Sister chromatid exchanges (SCEs) observed by means of bromodeoxyuridine substitution and fluorescence plus Giemsa (FPG) technique were proposed as a sensitive and quantitative assay for mutagenicity and cytotoxicity in short-term cultures of phytohaemagglutinin (PHA)-stimulated human lymphocytes. Therefore, this study was carried out to investigate the relation between anticancer agents and cytotoxic effects. Chromosomal analysis was performed on metaphase cells that had divided one, two, or three or more times after treatment for SCEs, mitotic indices (MI) and cell cycle kinetics by FPG technique. The results indicate that anticancer agents led to a dose dependent increase in SCE frequency except methotrexate. But, highly inhibited mitotic indices and delayed cell cycle kinetics were observed except for cyclophosphamide. The author suggest that the difference of SCE frequency is due to the differences in the cytotoxic action of anticancer agents, but although the induction of SCEs has a correlation with cell cycle delay, in some cases the induction of SCEs is not always related to cell cycle delay because of different cytotoxic action of anticancer agents.
Antineoplastic Agents*
;
Bromodeoxyuridine
;
Cell Cycle*
;
Cyclophosphamide
;
Fluorescence
;
Humans
;
Humans*
;
Kinetics*
;
Lymphocytes*
;
Metaphase
;
Methotrexate
;
Mitotic Index
;
Siblings*
;
Sister Chromatid Exchange*