1.Clinical Comparison between Decompression and Posterior Lumbar Interbody Fusion in Chronic Lower Back Pain Involving Degenerative Disc Disease and Spinal Stenosis.
Kyung Cheol KO ; Chang Yoeng KWON
Journal of Korean Neurosurgical Society 1998;27(2):153-158
Between January 1992 and December 1995, 23 patients with chronic lower back pain involving lumbar disc degeneration and spinal stenosis underwent decompression and posterior lumbar interbody fusion. Two groups of patients were studied, and clinical symptoms, neurological signs and clinical results were compared. With regard to mechanical back pain and clinical results, posterior lumbar interbody fusion was superior to decompression, but as regards leg pain and neurologic signs, the two groups were similar. Posterior lumbar interbody fusion was of considerable benefit to patients with chronic lower back pain.
Back Pain
;
Decompression*
;
Humans
;
Intervertebral Disc Degeneration
;
Leg
;
Low Back Pain*
;
Neurologic Manifestations
;
Spinal Stenosis*
2.Molecular Cloning of Mouse Interleukin-2 Receptor bata-Chain Gene Promoter.
Chang Kwon KO ; Sang Kyu YE ; Bon Hong MIN ; Kwang Ho LEE
Korean Journal of Immunology 1998;20(3):285-288
No abstract available.
Animals
;
Cloning, Molecular*
;
Interleukin-2*
;
Mice*
3.A case of advanced abdominal pregnancy.
Yun Jin PARK ; Tae Kyu YOON ; Chang Won KO ; Myung Kwon JEON ; Hong Kyoon LEE
Korean Journal of Obstetrics and Gynecology 1993;36(7):1624-1631
No abstract available.
Female
;
Pregnancy
;
Pregnancy, Abdominal*
4.Gray-Scale Stimulated Acoustic Emission: Differential Diagnosis between Hepatocellular Carcinoma and Metastastic Adenocarcinoma.
Journal of the Korean Radiological Society 2001;44(1):63-68
PURPOSE: To assess the value of gray-scale stimulated acoustic emission in differential diagnosis between hepatocellular carcinoma and metastatic adenocarcinoma. MATERIALS AND METHODS: Twenty-four cases of epatocellular carcinoma (HCC) in 23 patients and 26 cases of metastatic adenocarcinoma in 14 patients were prospectively examined using the pulse-inversion harmonic technique after intravenous SH U 508A administration. Gray-scale stimulated acoustic emission (SAE) was measured 5 mins after bolus injection of a contrast agent (4g, 400 mg/ml). The presence or absence of SAE signals at internal and marginal areas of the tumor and the appearance (smooth or irregular) of its border were compared. In addition, the SAE index [SAE (parenchyma) - SAE (tumor)/ SAE (parenchyma)] was histographically determined using a computerized program (PiView TM ; Mediface, Seoul, Korea). The statistics were analysed using student'st test. RESULT: Of the 24 HCC cases, 20 (83%) showed internal SAE signals, while 23 (96%) marginal signals were emitted. Of the 26 cases of metastatic adenocarcinoma, one (4%) showed internal SAE signals, while in five (19%), these signals were marginal. The tumoral border was irregular in 19 HCC lesions (79%) and smooth in 23 metastatic lesions (88%). For HCC and metastatic tumors, the mean SAE index was 0.38 +/-0.15 and 0.60 +/- 0.08, respectively (p < 0.001). CONCLUSION: Gray-scale stimulated acoustic emission can be a useful tool in differential diagnosis between heatocellular carcinoma and metastatic adenocarcinoma.
Acoustics*
;
Adenocarcinoma*
;
Carcinoma, Hepatocellular*
;
Diagnosis, Differential*
;
Humans
;
Liver Neoplasms
;
Microbubbles
;
Prospective Studies
;
Seoul
5.The Establishment of IL - 2 Dependent Cell Line from IL - 3 Dependent Mouse Hemopoietic Progenitor Cell Line and Its Analysis.
Kwang Ho LEE ; Chang Kwon KO ; Min Dong SONG ; Tasuku HONJO
Korean Journal of Immunology 1997;19(1):39-48
No abstract available.
Animals
;
Cell Line*
;
Mice*
;
Polymerase Chain Reaction
;
Stem Cells*
6.A clinical study of segmental tibial fracture.
Chang Uk CHOI ; Jae Uk KWON ; Man Sik YANG ; Kwang Kon KO ; Seung Ryeol YOON
The Journal of the Korean Orthopaedic Association 1992;27(1):148-157
No abstract available.
Tibial Fractures*
7.Evaluation of Stent Apposition in the LVIS Blue Stent-Assisted Coiling of Distal Internal Carotid Artery Aneurysms : Correlation with Clinical and Angiographic Outcomes
Min-Yong KWON ; Young San KO ; Sae Min KWON ; Chang-Hyun KIM ; Chang-Young LEE
Journal of Korean Neurosurgical Society 2022;65(6):801-815
Objective:
: To evaluate the stent apposition of a low-profile visualized intraluminal support (LVIS) device in distal internal carotid artery (ICA) aneurysms, examine its correlation with clinical and angiographic outcomes, and determine the predictive factors of ischemic adverse events (IAEs) related to stent-assisted coiling.
Methods:
: We retrospectively analyzed a prospectively maintained database of 183 patients between January 2017 and February 2020. The carotid siphon from the cavernous ICA to the ICA terminus was divided into posterior, anterior, and superior bends. The anterior bends were categorized into angled (V) and non-angled (C, U, and S) types depending on the morphology and measured angles. Complete stent apposition (CSA) and incomplete stent apposition (ISA) were evaluated using unsubtracted angiography and flat-panel detector computed tomography. Dual antiplatelet therapy with aspirin 200 mg and clopidogrel 75 mg was administered. Clopidogrel resistance was defined as fewer responders (≥10%, <40%) and non-responders (<10%) based on the percent inhibition (%INH) of the VerifyNow system. These were counteracted by a dose escalation to 150 mg for fewer responders or substitution with cilostazol 200 mg for non-responders. IAEs included intraoperative in-stent thrombosis, transient ischemic attack, cerebral infarction, and delayed in-stent stenosis. A multivariate logistic regression analysis was used to determine the predictive factors for ISA and IAEs.
Results:
: There were 33 ISAs (18.0%) and 27 IAEs (14.8%). The anterior bend angle was narrower in ISA (-4.16°±25.18°) than in CSA (23.52°±23.13°) (p<0.001). The V- and S-types were independently correlated with the ISA (p<0.001). However, treatment outcomes, including IAEs (15.3% vs. 12.1%), aneurysmal complete occlusion (91.3% vs. 88.6%), and recanalization (none of them), did not differ between CSA and ISA (p>0.05). The %INH of 27 IAEs (13.78%±14.78%) was significantly lower than that of 156 non-IAEs (26.82%±20.23%) (p<0.001). Non-responders to clopidogrel were the only significant predictive factor for IAEs (p=0.001).
Conclusion
: The angled and tortuous anatomical peculiarity of the carotid siphon caused ISA of the LVIS device; however, it did not affect clinical and angiographic outcomes, while the non-responders to clopidogrel affected the IAEs related to stent-assisted coiling.
8.The Outcome of Percutaneous Intervention of the Superficial Femoral Artery and the Predictors of its Patency.
Sang Hak LEE ; Donghoon CHOI ; Young Guk KO ; Kihwan KWON ; Do Yun LEE ; Byung Chul CHANG ; Won Heum SHIM
Korean Circulation Journal 2003;33(7):607-613
BACKGROUND AND OBJECTIVES: Percutaneous intervention has become an established technique in the treatment of peripheral arterial obstructive disease. This study was performed to evaluate the procedural success and long-term outcome of percutaneous intervention of the superficial femoral artery (SFA), and to determine the factors that influence the long-term outcome. SUBJECTS AND MEHTODS: Eighty-eight consecutive lesions, in 76 subjects (mean age 65) with chronic lower limb ischemia and SFA obstruction, diagnosed with angiography were included in this study. The angiographic success was defined as residual stenosis <30% and the clinical success as an improvement by at least one clinical category. The clinical patency was defined as an absence of symptom recurrence and target lesion revascularization during the follow up period. The predictors of the outcome were also determined. RESULTS: Balloon angioplasty only was performed in 39 lesions and thrombolysis only in 2, whereas stenting was performed in 47 lesions. Seventy four of the 88 attempts (84%) at recanalization were angiographically successful, while 73 (83%) experienced clinical improvement. The twelve month patency was 67%. Critical ischemia (versus intermittent claudication)(relative risk 4.2, p=0.020) and renal failure (relative risk 4.1, p=0.016) were independent negative predictors of the patency. CONCLUSION: Percutaneous intervention of the SFA yielded a high procedural success rate, with an acceptable long-term outcome. Symptoms of critical ischemia and renal failure were predictive of a low long-term patency.
Angiography
;
Angioplasty
;
Angioplasty, Balloon
;
Arterial Occlusive Diseases
;
Constriction, Pathologic
;
Femoral Artery*
;
Follow-Up Studies
;
Ischemia
;
Lower Extremity
;
Outcome Assessment (Health Care)
;
Recurrence
;
Renal Insufficiency
;
Stents
9.Balloon Catheter Assisted Biliary Stent Insertion.
Clinical Endoscopy 2013;46(2):201-202
10.2 Cases of Hypoplastic Left Heart Syndrome.
Sejung SOHN ; Jae Kon KO ; Jung Yun CHOI ; Yong Soo YUN ; Chang Yee HONG ; Tae Chan KWON
Korean Circulation Journal 1986;16(3):401-409
Hypoplastic left heart syndrome is a rare congenital heart disease. This is a universally fatal leison, and approximately 80% of patients die within the first week of life. The diagnosis should be considered in infants, with the sudden onset of heart failure, systemic hypoperfusion and cyanosis. 2 cases of hypoplastic left syndrome are presented with review of related literatures.
Cyanosis
;
Diagnosis
;
Heart Defects, Congenital
;
Heart Failure
;
Humans
;
Hypoplastic Left Heart Syndrome*
;
Infant