2.Primary Localized Amyloidosis of Upper Urinary Tarct Treated by Renal Preserving Surgery.
Sang Hyun CHEON ; Kyu Rae KIM ; Choung Soo KIM
Korean Journal of Urology 2000;41(2):337-340
No abstract available.
Amyloidosis*
3.Effect of High-dose Intrevenous Immune Globulin in the Treatment of Neonatal Immune Hemolytic Jaundice Unresponsive to Phototherapy.
Sang Lak LEE ; Yoon Jung CHO ; Cheon Soo KIM
Korean Journal of Perinatology 1999;10(2):176-182
OBJECTIVE: Immune hemolytic jaundice is caused by the destruction of antibody-sensitized erythrocytes and is associated with antibody-dependent cellular cytotoxic effects mediated by Fc receptor-bearing cells of the reticuloendothelial system. Intravenous immune globulin(IVIG) may have exerted its effect through Fc receptor blockade. We studied the effect of high-dose intravenous immune globulin(HDIVIG) in neonatal hemolytic jaundice unresponsive to phototherapy. METHODS: We selected only those with Coombs test(+) immune hemolytic jaundice who had admittcd at the NICU of the Dcpartment of Pediatzics of Dongsan Medical Center, Keimyung University between January 1995 and December 1998. They were unresponsive to phototherapy. Ten newborn infants(9 ABO incomplatibilities, l minor group incompatabillity due to anti-E) received HDIVIG therapy combined with phototherapy. IVIG was given as a dose of lg/kg for 6 hours, and serial hemoglobin, reticulocyte count, and bilirubin levels were evaluated. If the serum bilirubin level went up and reached the level above 22mg/dl, we conducted exchange transfusion for the patient. RESULTS: HDIVIG induced a significant decrease of serum billirubin levels in 8(80%, group I, HDIVIG responsive poup) of 10 cases and only 2 cases(group II, HDIVIG unreponsive group) required exchange tnnsfusions. No side effect was observed after HDIVIG therapy. CONCLUSION: We suggest HDIVIG may be effective in the treatment of phototherapy-resistant hyperbilirubinemia due to blood group incompatibility. More studies are needed to confirm the optimal dosage and therapeutic indication of HDIVIG in the therapy of neonatal immune hemolytic jaundice.
Bilirubin
;
Blood Group Incompatibility
;
Erythrocytes
;
Humans
;
Hyperbilirubinemia
;
Immunoglobulins, Intravenous
;
Infant, Newborn
;
Jaundice*
;
Mononuclear Phagocyte System
;
Phototherapy*
;
Receptors, Fc
;
Reticulocyte Count
4.The Role of PSA-mRNA RT-PCR in Molecular Staging of Prostate Cancer.
Han CHUNG ; Sang Hyeon CHEON ; Choung Soo KIM
Korean Journal of Urology 1999;40(9):1137-1144
PURPOSE: Recent studies report that up to 40 to 50% of patients who were thought to have clinically localized disease were found to be understaged subsequent to radical surgery. Clearly, development of more sensitive means to identify patients with micrometastatic, locally invasive disease is warranted. With the development of molecular biology, we can apply reverse transcriptase-polymerase chain reaction (RT-PCR) that allows us to identify PSA-synthesizing cells in peripheral blood even when they are highly diluted in a population of peripheral lymphocytes. In this study, we will evaluate the role of RT-PCR in molecular staging of prostate cancer to apply it to clinical situations. MATERIALS AND METHODS: Peripheral blood was obtained from a wide variety of patients with and without prostate cancer before radical prostatectomy. After ribonucleic acid isolation, complementary deoxyribonucleic acid was generated and amplified with a hot-start technique. RT-PCR results were compared with pathologic stage, Gleason score, serum PSA and tumor volume. RESULTS: The RT-PCR test was positive in 0 of 20 controls without suspicion of prostate cancer. Before radical prostatectomy a positive test was obtained in 2 of 9(22.2%) with pT2 disease versus 3 of 5(60%) with pT3 disease. A positive test was obtained in 5 of 6(83.3%) with overt lymph node or bone metastatic disease. We obtained intermittent RT-PCR positive results in serial procedures with two overt bone metastatic cancer patients. There was no significant difference in serum PSA, Gleason score or tumor volume between the men with positive or negative results. CONCLUSIONS: The PSA RT-PCR test in our laboratory cannot be used preoperatively to predict accurate pathological stage of prostate cancer who have undertaken radical prostatectomy. But there is a tendency that PSA mRNA was more frequently detected with higher stage. If the methodology of RT-PCR is refined and improved and sample size increased, RT-PCR for PSA mRNA will become a valuable tool for the evaluation of prostate cancer patients.
DNA
;
Humans
;
Lymph Nodes
;
Lymphocytes
;
Male
;
Molecular Biology
;
Neoplasm Grading
;
Prostate*
;
Prostate-Specific Antigen
;
Prostatectomy
;
Prostatic Neoplasms*
;
RNA
;
RNA, Messenger
;
Sample Size
;
Tumor Burden
5.5 cases of cardiac myxoma with neurologic manifestations.
Sang Soo YOON ; Dae Il CHANG ; Kyung Cheon CHUNG
Journal of the Korean Neurological Association 1997;15(5):1155-1161
Cardiac myxoma is a rare but potentially treatable cause of stroke. The diagnosis is rarely made on typical triad of constitutional, embolic, and obstructive symptoms, and it is difficult because there is no specific history, physical examination, chest X-ray, or electrocardiographic findings, but with the development of echocardiography the correct diagosis is now usualy made. Neurologic manifestation is frequent(25-45%) and presented with embolic infarction, aneurysm formation, intracranial hemorrhage, and distant metastasis. We experienced five patients with cardiac myxoma who presented with these neurologic manifestations. Also we should be considered in the differential diagnosis of cerebral infarction, particularly when multiple cerebral infarction and constitutional or obstructive symptoms are conjoined in young age stroke. We describe five patients who presented with embolic infarction, cerebral metastasis and aneurysm formation.
Aneurysm
;
Cerebral Infarction
;
Diagnosis
;
Diagnosis, Differential
;
Echocardiography
;
Electrocardiography
;
Humans
;
Infarction
;
Intracranial Hemorrhages
;
Myxoma*
;
Neoplasm Metastasis
;
Neurologic Manifestations*
;
Physical Examination
;
Stroke
;
Thorax
6.A clinical review of 781 cases of biliary tract stones.
Byoung Seon RHOE ; Sang Hee KIM ; Nam Cheon CHO ; Kwang Soo YOON ; Dae Sung KIM
Journal of the Korean Surgical Society 1992;42(2):190-198
No abstract available.
Biliary Tract*
7.Bacteriology of the biliary tract.
Byoung Seon RHOE ; Sung Sang MOON ; Nam Cheon CHO ; Kwang Soo YOON ; Dae Sung KIM ; Kyung Won LEE
Journal of the Korean Surgical Society 1992;43(3):364-370
No abstract available.
Bacteriology*
;
Biliary Tract*
8.A Case of Multifocal Cerebral Infarction Associated with Pseudoxanthoma Elasticum.
Sung Sang YOON ; Dae Il CHANG ; Kyung Cheon CHUNG ; Tae Soo KIM
Journal of the Korean Neurological Association 1994;12(1):159-163
Pseudoxanthoma elasticum is a rare, hereditable disease of connective tissue, characterzed by abberrant calcification of the elastic tissue of the skin, eyes, vasculature. We report a 61years old female patient with pseudoxanthoma elasticum with typical peau d'orange skin lesion around the neck, angioid streaks in the retina and multifocal cerebral infarction.
Angioid Streaks
;
Cerebral Infarction*
;
Connective Tissue
;
Elastic Tissue
;
Female
;
Humans
;
Neck
;
Pseudoxanthoma Elasticum*
;
Retina
;
Skin
9.A Comparison of the Fixation Strengths Provided by Different Intraosseous Tendon Lengths during Anterior Cruciate Ligament Reconstruction: A Biomechanical Study in a Porcine Tibial Model.
Dong Lyul YANG ; Sang Ho CHEON ; Chang Wug OH ; Hee Soo KYUNG
Clinics in Orthopedic Surgery 2014;6(2):173-179
BACKGROUND: The purpose of this study was to determine the tibial fixation strength provided by different intraosseous soft tissue graft lengths within the tibial tunnel. METHODS: Porcine tibial bones and digital flexor tendons were used for testing. Bone mineral densities of proximal tibial medial condyles were measured, and two-strand tendon bundles of 8 mm diameter were used. An intraosseous graft length of 2 cm was used in group 1 (n = 10), and a graft length of 4 cm was used in group 2 (n = 10). Tunnels were 4 cm in length and 8 mm in diameter. Tibial fixation was performed using a suture tied around a screw post with a washer and an additionally inserted 7 x 20 mm bioabsorbable screw. After applying preconditioning loading of 10 cycles, 1,000 cycles between 70-220 N were applied at a frequency of 1 Hz. Graft slippage and total graft movement were recorded. Ultimate tensile strength was measured by pull-out testing at an Instron crosshead speed of 1,000 mm/min. RESULTS: No significant intergroup difference was found for total graft movement after cyclic loading (slippage in group 1, 1.2 mm and group 2, 1.2 mm, respectively, p = 0.917; and total graft movement in group 1, 3.3 mm and group 2, 2.7 mm, respectively, p = 0.199). However, mean ultimate tensile strength in group 2 was significantly higher than that in group 1 (group 1, 649.9 N; group 2, 938 N; p = 0.008). CONCLUSIONS: In a porcine model, ultimate tensile strength was greater for a 4 cm long intraosseous flexor tendon in the tibial tunnel. However, no intergroup difference in graft slippage or total graft movement was observed. The results show that a 2 cm intraosseous graft length in the tibial tunnel is safe and has sufficient strength (> 450 N) for adequate rehabilitation after anterior cruciate ligament reconstruction.
Animals
;
Anterior Cruciate Ligament/injuries/*physiopathology/surgery
;
*Anterior Cruciate Ligament Reconstruction
;
Biomechanical Phenomena
;
Bone Density
;
Models, Animal
;
Swine
;
Tendons/*transplantation
;
Tensile Strength
;
Tibia/*surgery
10.Current Status of Intraosseous Infusion Technique Use at Emergency Departments in Korea.
Sang Cheon CHOI ; Hyun Soo PARK ; Jae Woo KIM
Journal of the Korean Society of Traumatology 2007;20(1):6-11
PURPOSE: Gaining vascular access is difficult and time-consuming in critically ill children, so nowdays, in many countries, intraosseous vascular access is frequently used for rapid vascular access in critically ill children. Its pharmacokinetics is close to that of the peripheral intravenous route, but its infusion flow rate is faster. The purpose of this study was to determine how widely the intraosseous infusion technique was being used in Korean emergency departments. METHODS: We telephoned forty-two (42) randomly selected university-affiliated hospitals. We asked physicians if they use the intraosseous infusion technique. Responders were emergency and pediatric residents and emergency faculty. If they responded that they were not using the intraosseous infusion technique, we asked the reason. Also, we asked about their experiences with the intraosseous infusion technique. RESULTS: Forty-two (42) hospitals were enrolled in this study. No hospital used the intraosseous infusion technique on a regular basis. However, 8 hospitals used the intraosseous infusion technique occasionally. None of the responders had experience with the intraosseous infusion technique. CONCLUSION: The intraosseous infusion technique is currently underrepresented at emergency departments in Korea.
Child
;
Critical Illness
;
Emergencies*
;
Emergency Service, Hospital*
;
Humans
;
Infusions, Intraosseous*
;
Korea*
;
Pharmacokinetics