1.The experience of median facial cleft.
Sang Kune HWANG ; Young Bae KIM ; Chong Sup PARK
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1992;19(5):801-807
No abstract available.
2.Acute Appendicitis in the Aged.
Hoo Sup SIM ; Young Kil LEE ; Jung Yul HWANG
Journal of the Korean Surgical Society 1998;54(5):695-700
Acute appendicitis is a common disease, in general, but is rare in the elderly. This report is a clinical review of 148 patients over the age of 60 who, due to acute appendicitis, underwent appendectomies at the Department of General Surgery of Saint Columban Hospital from January 1993 to December 1995. The results are as follows: 1) The overall percentage of the patients over the age of 60 was about 16.4%. 2) The male to female ratio was 1:1.6. 3) The perforation rate was 33.1%. 4) The mean duration of symptoms were 2 days in non-perforated and 4.5 days in perforated appendicitis. 5) The chief complaints were pain (86.5%) and tenderness (88.5%) on right lower quadrant. 6) This disease occurred most frequently in spring and summer. 7) The highest incidence of leukocyte count was 10,000~15,000 per cubic mm of blood (50%). 8) The most frequent postoperative complication was wound infection as 14.2%. 9) sixty-seven cases (45.3%) were accompanied by concomitant disease, the most frequent being hypertention (14.9%). 10) The mean numbers of hospital days were 7.5 in non-perforated and 14 in perforated appendicitis.
Aged
;
Appendectomy
;
Appendicitis*
;
Female
;
Humans
;
Incidence
;
Leukocyte Count
;
Male
;
Postoperative Complications
;
Saints
;
Wound Infection
3.A Case of Kerion Celsi due to Microsporum canis in An Aged Woman.
Young Sup CHO ; Byung Chun MUN ; Kae Yong HWANG ; Jong Su CHOI ; Ki Hong KIM
Korean Journal of Dermatology 1986;24(6):844-847
Kerion celsi is severe inflammatory type of tinea capitis. It occurs almost exclusively in pre-pubertal children. We report a case of Kerion celsi occuring in a 79-year-old woman. Culture of infected hair on Sabouraud glucose agar showed Microsporum canis Farnily history and fungus study suggested the importance of indirect route in Microsporum canis infection.
Agar
;
Aged
;
Child
;
Female
;
Fungi
;
Glucose
;
Hair
;
Humans
;
Microsporum*
;
Tinea Capitis*
5.An experimental study about efficacy of drain catheters.
Bum Gyu AHN ; Joon Young NHO ; Hyo Cheol WOO ; Woo Cheol HWANG ; Choong Ki PARK ; Jong Sup YOON
Journal of the Korean Radiological Society 1993;29(5):917-922
Although percutaneous abscess drainage has become and accepted alternative from of therapy for selected patients with abscess, it is well known that there are several factors in the failure of adequate drainage such as pre-and post- procedural management, technique itself, various features of abscess, and selection and application of catheters. Among these factors, we made an experiment about drain efficacy of commonly used various catheters with different viscosities of water-glycerin solution under the two different pressure gradients. The experimental values of flow rate were lower than than the calculated values. An efficacy of experimental value was 4-14%. Because the inner diameter of fittings and stopcocks was usually smaller than the inner diameter of catheters, these factors also affected the drain efficacy. Finally, we though that it will be very helpful to the treatment of patients as well as to study about the catheter drainage, if the drain efficacy of individual catheters has been notified.
Abscess
;
Catheters*
;
Drainage
;
Humans
;
Viscosity
6.The efficiency of SAS used retraction of the anterior teeth on orthodontic treatment.
Soon Seop WOO ; Soon Tai JEONG ; Young Sung HUH ; Kyung Gyun HWANG ; Im Hag YOO ; Kwang Sup SHIM
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2003;29(4):245-248
The retraction of anterior teeth could be performed more easier by inducing of skeletal anchorage system rather than by conventional method on orthodontic treatment. But, we wonder how effective the system draws well without anchorage loss and draws anterior teeth aside posteriorly, and if the system can reduce the time, in comparison with the anchorage of posterior teeth. For that reason we have studied on the subject of patients, who were required the maximum anchorage on orthodontic treatment and the cases without crowding. The subjects of the experimental group are 35 areas of 20 people who were inserted miniscrews after Mx or Mn 1st premolar extracted. Also, the subjects of the control group are 81 areas of 45 people who were not inserted miniscrews. Compared the anchorage loss of experimental group with control one, we could get the result that the anchorage loss of experimental group is 1.034+/-0.891mm and control group is 2.790+/-1.882mm(P<0.01). Compared the space closing time of experimental group with control one, we could get the result that the space closing time of experimental group is 369.40+/-110.81days and control group is 406.56+/-231.63days. But the result of comparing space closing time has no significance in statistics. We recognized that the experimental group is more faster than the control group in the canine retraction velocity from the result ; the speed of a experimental group has as much as 0.60+/-0.23mm/30days while the speed of a control group has 0.44+/-0.35mm/30days(P<0.05). So, we could convince that orthodontic miniscrew is used effectively in the cases required the maximum anchorage.
Bicuspid
;
Crowding
;
Humans
;
Tooth*
7.Osteogenic differentiation of bone marrow derived stem cells in gelatin-hydroxyapatite nanocomposite.
Hyun Jun JEON ; Young Sup HWANG ; Uk Kyu KIM ; Dae Seok HWANG ; Kwang Ho LEE ; Myung Cheol CHANG
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2009;35(1):7-12
PURPOSE: Gelatin-hydroxyapatite nanocomposite is similar to inorganic nanostructure of bone. To make a scaffold with osteoinductivity, bone marrow derived stem cells from rabbit femur were impinged into the nanocomposite. This vitro study was to test osteogenic differentiation of the stem cells in the nanocomposite, which was made by authors. MATERIAL & METHODS: Gel-HA nanocomposite with 10g of HA, 3 g of Gel has been made by co-precipitation process. Bone marrow was obtained from femur of New Zealand White rabbits and osteogenic differentiation was induced by culturing of the BMSCs in an osteogenic medium. The BMSCs were seeded into the Gel-HA nanocomposite scaffold using a stirring seeding method. The scaffolds with the cells were examined by scanning electron microscopy (SEM), colorimetry assay, biochemical assay with alkaline phosphatase (ALP) diagnostic kit, osteocalcin ELISA kit. RESULTS: Gel-HA nanocomposite scaffolds were fabricated with relatively homogenous microscale pores (20-40 micrometer). The BMSCs were obtained from bone marrow of rabbit femurs and confirmed with flow cytometry, Alizarin red staining. Attachment and proliferation of BMSCs in Gel-HA nanocomposite scaffold could be identified by SEM, ALP activity and osteocalcin content of BMSCs. CONCLUSION: The Gel-HA nanocomposite scaffold with micropores could be fabricated and could support BMSCs seeding, osteogenic differentiation.
Alkaline Phosphatase
;
Anthraquinones
;
Bone Marrow
;
Colorimetry
;
Durapatite
;
Enzyme-Linked Immunosorbent Assay
;
Femur
;
Flow Cytometry
;
Microscopy, Electron, Scanning
;
Nanocomposites
;
Nanostructures
;
Osteocalcin
;
Rabbits
;
Seeds
;
Stem Cells
8.Osteogenic differentiation of bone marrow derived stem cells in gelatin-hydroxyapatite nanocomposite.
Hyun Jun JEON ; Young Sup HWANG ; Uk Kyu KIM ; Dae Seok HWANG ; Kwang Ho LEE ; Myung Cheol CHANG
Journal of the Korean Association of Oral and Maxillofacial Surgeons 2009;35(1):7-12
PURPOSE: Gelatin-hydroxyapatite nanocomposite is similar to inorganic nanostructure of bone. To make a scaffold with osteoinductivity, bone marrow derived stem cells from rabbit femur were impinged into the nanocomposite. This vitro study was to test osteogenic differentiation of the stem cells in the nanocomposite, which was made by authors. MATERIAL & METHODS: Gel-HA nanocomposite with 10g of HA, 3 g of Gel has been made by co-precipitation process. Bone marrow was obtained from femur of New Zealand White rabbits and osteogenic differentiation was induced by culturing of the BMSCs in an osteogenic medium. The BMSCs were seeded into the Gel-HA nanocomposite scaffold using a stirring seeding method. The scaffolds with the cells were examined by scanning electron microscopy (SEM), colorimetry assay, biochemical assay with alkaline phosphatase (ALP) diagnostic kit, osteocalcin ELISA kit. RESULTS: Gel-HA nanocomposite scaffolds were fabricated with relatively homogenous microscale pores (20-40 micrometer). The BMSCs were obtained from bone marrow of rabbit femurs and confirmed with flow cytometry, Alizarin red staining. Attachment and proliferation of BMSCs in Gel-HA nanocomposite scaffold could be identified by SEM, ALP activity and osteocalcin content of BMSCs. CONCLUSION: The Gel-HA nanocomposite scaffold with micropores could be fabricated and could support BMSCs seeding, osteogenic differentiation.
Alkaline Phosphatase
;
Anthraquinones
;
Bone Marrow
;
Colorimetry
;
Durapatite
;
Enzyme-Linked Immunosorbent Assay
;
Femur
;
Flow Cytometry
;
Microscopy, Electron, Scanning
;
Nanocomposites
;
Nanostructures
;
Osteocalcin
;
Rabbits
;
Seeds
;
Stem Cells
9.Multiple Calcifying Fibrous Pseudotumors in the Pleura : A case report.
Chang Young LEE ; Chun Sung BYUN ; In Kyu PARK ; Kyung Young CHUNG ; Yoo Hwa HWANG ; Hyo Sup SHIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2009;42(5):666-669
Calcifying fibrous pseudotumors (CFP) are rare soft tissue tumors that have unique histopathologic features characterized by a dense hyalinized collagenous tissue interspersed with benign spindle cells, lymphoplasmacytic infiltrate, and psammomatous or dystrophic calcifications. We report here on a case of calcifying fibrous pseudotumors in the pleura and provide a literature review.
Collagen
;
Hyalin
;
Pleura
;
Pleural Diseases
10.The Effects of Unilateral Brain Hypoxia-ischemia on the Contralateral Cerebral Hemisphere in the Neonatal Rat.
Sang Kook LEE ; Seung Won PARK ; Young Baeg KIM ; Eun Sup PARK ; Byung Kook MIN ; Sung Nam HWANG ; Duck Young CHOI ; Jong Sik SUK
Journal of Korean Neurosurgical Society 1997;26(3):362-369
Injury to specific areas of the immature brain, in both the human and animals, can result in compensatory reorganization in undamaged adjacent or contralateral areas. The functional plasticity of such compensatory hypertrophy is not well known, but in some cases may be responsible for recovery of function. In order to investigate the effect of unilateral ischemic injury on the contralateral cerebral hemisphere in neonatal rats, early and late changes in various areas of both cerebral hemispheres were assessed. Seventy-seven seven-day-old Sprague-Dawley rats underwent unilateral carotid artery ligation and were then exposed to hypoxia(8% oxygen) for 3 hours. The animals were killed one week(Group I, 58 rats) and three months(Group II, 19 rats) later. Twelve rats, comprising Group III, were exposed to hypoxia for 3 hours without carotid artery ligation. The control group, consisting of 19 rats, did not undergo any of the above procedures. In each slice of brain tissue(4mm posterior to the bregma), the area of the whole brain, each hemisphere, and the frontoparietal, temporal and hippocampal regions in each hemisphere were measured, using the image analysis program(Optimas 5.2), and to assess which regions were affected, proportions of each hemisphere occupied by each region were compared. In Group II, the proportional areas of the frontoparietal(p<0.05) and temporal(p<0.01) regions in the contralateral hemisphere increased significantly, compared with the control group, but the hippocampal region showed no significant change. In Group I, there was no contralateral hypertrophy. The ipsilateral hemisphere showed significant atrophy and there was weight reduction in Groups I(p<0.001) and II(p<0.001). This study suggests that unilateral hypoxia-ischemia results in ipsilateral hemispheric atrophy and contralateral hypertrophy, especially in the frontoparietal and temporal areas, may contribute to some functional recovery and compensation in addition to uncrossed corticospinal or other descending motor systems.
Animals
;
Anoxia
;
Atrophy
;
Brain*
;
Carotid Arteries
;
Cerebrum*
;
Compensation and Redress
;
Humans
;
Hypertrophy
;
Hypoxia-Ischemia, Brain*
;
Ligation
;
Plastics
;
Rats*
;
Rats, Sprague-Dawley
;
Recovery of Function
;
Weight Loss