1.The Role of Initial Relative Renal Function in Unilateral Hydronephrosis.
Sang Won HAN ; Min Joong KWON ; Tack LEE ; Seon Jung KANG ; Dae Joong KIM ; Seung Kang CHOI
Journal of the Korean Society of Pediatric Nephrology 1999;3(2):203-208
Glassy cell carcinoma is an unusual neoplasm of the uterine cervix with highly aggressive clinical behavior. On cervico-vaginal smear examination, the tumor has well confused of atypical repair cell of the endocervix. Recently, we have experienced two cases of glassy cell carcinoma of the uterine cervix, diagnosed on cervico-vaginal smears and confirmed on following histologic sections. The cervico-vaginal smears revealed abundant clusters with well defined boarders. The cell clusters were composed of large tumor cells. The tumor cells had distinct granular cytoplasm and eosinophilic macronucleoli. Characteristic cytologic features of this tumor were discussed in view of differential diagnosis.
Adenocarcinoma
;
Breast
;
Cervix Uteri
;
Cytoplasm
;
Diagnosis, Differential
;
Eosinophils
;
Female
;
Hydronephrosis*
2.Primary Central Nervous System Lymphoma:Clinical Analysis and Prognostic Factors.
Heum Dai KWON ; Ryoong HUH ; Dong Seok KIM ; Yong Gou PARK ; Joong Uhn CHOI ; Sang Sup CHUNG
Journal of Korean Neurosurgical Society 2000;29(12):1628-1633
No abstract available.
Central Nervous System*
3.Free Fillet Flap of the Forearm Amputee for Coverage of the Contralateral below Elbow Amputee and Restoration of the Flexion of the Elbow.
Soo Joong CHOI ; Bong Cheol KWON ; Kyu Hak JUNG
Journal of the Korean Microsurgical Society 2007;16(2):82-85
Free vascularized tissue transfer to preserve upper extremity amputation level is uncommon but very useful procedure. To cover the below-elbow amputee stump and restore the function of the elbow, we have used a free flap as a spare part concept from the contralateral hand which was so severely damaged that amputation was inevitable.
Amputation
;
Amputees*
;
Elbow*
;
Forearm*
;
Free Tissue Flaps
;
Hand
;
Humans
;
Upper Extremity
4.Prognostic Value of Elevated Homocysteine Levels in Korean Patients with Coronary Artery Disease: A Propensity Score Matched Analysis.
Sung Woo KWON ; Jong Youn KIM ; Young Ju SUH ; Dae Hyung LEE ; Young Won YOON ; Byoung Kwon LEE ; Young Hak JUNG ; Eui Young CHOI ; Bum Kee HONG ; Se Joong RIM ; Hyuck Moon KWON
Korean Circulation Journal 2016;46(2):154-160
BACKGROUND AND OBJECTIVES: We sought to determine whether an elevated homocysteine (Hcy) level is associated with a worse prognosis in Korean patients with coronary artery disease (CAD). SUBJECTS AND METHODS: A total of 5839 patients (60.4% male, mean age 61.3±11.2 years) with CAD were enrolled from 2000 to 2010 at Gangnam Severance Hospital. CAD was diagnosed by invasive coronary angiography. Laboratory values including Hcy level were obtained on the day of coronary angiography and analyses were performed shortly after sampling. Patients were divided into two groups according to their Hcy levels. Baseline risk factors, coronary angiographic findings, length of follow-up, and composite endpoints including cardiac death (CD) and non-fatal myocardial infarction (NFMI) were recorded. 1:1 propensity score matched analysis was also performed. RESULTS: Over a mean follow-up period of 4.4±2.5 years, there were 132 composite endpoints (75 CD and 57 NFMI) with an event rate of 2.3%. Mean Hcy level was 9.9±4.3 µmol/L (normal Hcy 7.9±1.5 µmol/L and elevated Hcy 13.9±5.1 µmol/L). Kaplan-Meier survival analysis showed an association of elevated Hcy level with worse prognosis (p<0.0001). In addition, a multivariate Cox regression analysis showed an association of elevated Hcy level with worse prognosis for both the entire cohort (hazard ratio [HR] 2.077, 95% confidence interval [CI] 1.467-2.941, p<0.0001) and the propensity score matched cohort (HR 1.982, 95% CI 1.305-3.009, p=0.001). CONCLUSION: Elevated Hcy level is associated with worse outcomes in Korean patients with CAD.
Cohort Studies
;
Coronary Angiography
;
Coronary Artery Disease*
;
Coronary Vessels*
;
Death
;
Follow-Up Studies
;
Homocysteine*
;
Humans
;
Male
;
Myocardial Infarction
;
Prognosis
;
Propensity Score*
;
Risk Factors
5.Association between Psoriasis and Cardiovascular Risk Factors in Korean Patients.
Woo Jin CHOI ; Eun Joo PARK ; In Ho KWON ; Kwang Ho KIM ; Kwang Joong KIM
Annals of Dermatology 2010;22(3):300-306
BACKGROUND: Previous studies have shown a possible association between psoriasis and cardiovascular risk factors. OBJECTIVE: We wanted to study the association between psoriasis and cardiovascular risk factors, including metabolic syndrome. METHODS: We determined the relationship of psoriasis with the cardiovascular risk factors, metabolic syndrome and cardiovascular disease. For the proper level of low-density lipoprotein (LDL) cholesterol, we calculated the proportion of psoriasis patients who needed lifestyle changes or drug therapy. RESULTS: This study included 197 patients with psoriasis and 401 controls. We found a higher prevalence of metabolic syndrome (17.8%, p=0.021), cardiovascular disease (4.6%, p=0.044), hypertension (32.5%, p=0.000) and hyperlipidemia (22.3%, p=0.025) in patients with psoriasis, as compared with that of the controls. To maintain proper LDL levels, 25.3% of the psoriasis patients needed lifestyle changes and 11.7% needed drug therapy. CONCLUSION: Our results demonstrate a possible association between psoriasis and cardiovascular diseases and their risk factors (metabolic syndrome, hypertension and hyperlipidemia) in Korean patients. We also demonstrated that a substantial portion of patients with psoriasis need lifestyle changes and drug therapy to prevent cardiovascular events. Further studies will be necessary to establish the association and causality between psoriasis and the cardiovascular risk factors.
Cardiovascular Diseases
;
Cholesterol
;
Humans
;
Hyperlipidemias
;
Hypertension
;
Life Style
;
Lipoproteins
;
Prevalence
;
Psoriasis
;
Risk Factors
6.The Usefulness of Maximal Step Length to Predict Annual Fall Risk.
Yong Chol KWON ; Seok Joong KIM ; Hwa Jung KIM ; Jinho PARK ; Jin Young CHOI ; Be Long CHO
Journal of the Korean Academy of Family Medicine 2008;29(1):26-33
BACKGROUND: Many clinical measures have been used to assess fall risk in elderly adults. The first objective of this study was to assess the clinical availability of maximal step length (MSL) as a measurement predicting falling probability in future. The second objective of this study was to try to find out how to use MSL more easily in a clinical setting. METHODS: The study population consisted of 50 community-dwelling people (> or =60 yrs). Demographic data were reviewed by self-recorded questionnaire and MSL, US and TUG had been done when the subjects visited a clinic in March and April 2004. They revisited the clinic after one year and information of fall incidence was obtained and their visual acuity was examined. To examine the association between many performance tests (MSL Unipedal stance, Timed up and go) and their real falling after tests, we analysed data by Mann-Whitney rank Test, pearson correlation and multiple regression. RESULTS: The average MSL predicted future falling (P-value 0.025), but Unipedal stance, Timed up and go did not. The predicting ability of MSL was preserved using many MSL measures (average MSL corrected by leg length and height, one direction measure among six directions of MSL, and average of left and right three directions of MSL). CONCLUSION: This study showed that MSL had the ability to predict elderly adults' falling in future. And this study showed that MSL can be used more easily in a clinical setting.
Adult
;
Aged
;
Humans
;
Incidence
;
Leg
;
Visual Acuity
;
Surveys and Questionnaires
7.An Analysis on the Normal and Near Normal Hearts in Adult Sudden Cardiac Death.
Shin Mong KANG ; Won Tae LEE ; Han Young LEE ; Joong Soek SEO ; Young Shik CHOI ; Il Hoon KWON ; Nak Eun CHUNG
Korean Journal of Legal Medicine 2000;24(2):37-44
The authors analysed 53 cases of sudden cardiac death(SCD) without prominent structural abnormalies of heart out of witnessed 300 cases. Thirty four cases were associated with sleep and 19 with activity or rest. Twenty one cases were classified as having normal hearts, and the rest as structurally mild abnormal ones. Male was predominant, and almost of the victims were suffered in their twenties or thirties. All cases collapsed instantaneously or in very short time with various and not specific terminal symptoms. Inducing or trigger factors are not clarified in almost of the cases. Mechanisms or causes of death could not be defined clearly. We concluded that careful heart examination with detailed clinical history under the appropriate postmortem investigation system is only effective approach for the true mechanism and cause of death.
Adult*
;
Cause of Death
;
Death, Sudden, Cardiac*
;
Heart*
;
Humans
;
Male
8.Usefulness of ubiquitous-based testing for evaluations in medical education.
Oh Young KWON ; Sang Youl RHEE ; Joong Myung CHOI ; Young Seol KIM
Korean Journal of Medical Education 2015;27(1):3-10
PURPOSE: The purpose of this study was to evaluate the suitability (convenience, objectiveness, and satisfaction) of ubiquitous-based testing (UBT) as a medical education evaluation tool. METHODS: UBT was administered using a smart pad in our medical school in May 2012. A questionnaire was given twice. The pre-UBT questionnaire examined possession of a tablet computer, skillfulness of smart devices, the convenience of UBT, and the usefulness of a medical educational assessment tool. The post-UBT questionnaire evaluated the satisfaction, convenience, and preference of UBT and the usefulness of a medical educational assessment tool, as in the pre-UBT test. The survey was measured on a 4-point scale: 1 is "strongly disagree" and 4 is "strongly agree." RESULTS: One hundred three students (male, 55.3%) participated in the UBT. The mean age was 29.2+/-2.4 years. In the pre-UBT questionnaire analysis, students responded affirmatively to the items about the skillfulness of smart devices, clinical skill assessment, and achievement of educational objectives. The responses to the items on the convenience and satisfaction with the UBT were positive in the post-UBT. The factors that affected the post-UBT questionnaire were as follows: knowledge assessment (p=0.041) and achievement of educational objectives (p=0.015) were significant, based on gender, and satisfaction with the UBT (p=0.002) was significant, based on possession of a tablet computer. The relationship between the ranks of this UBT and the average ranks of the three previous semesters was statistically significant (p<0.001). CONCLUSION: Convenience, objectiveness, knowledge assessment, and composition and completion were useful items in the UBT.
Achievement
;
Adult
;
*Clinical Competence
;
*Computers
;
Consumer Behavior
;
*Education, Medical
;
Educational Measurement/*methods
;
Female
;
Goals
;
Humans
;
Male
;
Ownership
;
Sex Factors
;
*Smartphone
;
Surveys and Questionnaires
9.Risk Factors of Delayed Surgical Intervention after Conservatively Treated Acute Traumatic Subdural Hematoma.
Hyungjoo KWON ; Kyu Sun CHOI ; Hyeong Joong YI ; Hyoung Joon CHUN ; Young Jun LEE ; Dong won KIM
Journal of Korean Neurosurgical Society 2017;60(6):723-729
OBJECTIVE: Acute subdural hematoma (ASDH) is generally considered a condition that should be managed surgically. However, some patients initially receive conservative treatment, a subset of whom require surgical intervention later. This study aimed to evaluate the predictors of delayed surgical intervention in ASDH patients who are initially managed conservatively. METHODS: From January 2007 to December 2015, 842 patients diagnosed with ASDH were treated at our institution. Among them, 158 patients with convexity ASDH were initially treated conservatively. Patients were divided into a delayed surgery group and a conservative group. Demographic characteristics, past medication and medical histories, and radiological and laboratory data were collected by retrospective chart review. Independent risk factors were identified with univariate and multivariate analyses. RESULTS: Twenty-eight patients (17.7%) underwent delayed surgical intervention. Their mean age was 69.0 years, and 82.1% were male. Hypertension, diabetes mellitus, and heart disease prevalence and use of anti-platelet agents did not significantly differ from the conservative group. However, age (p=0.024), previous cerebral infarction history (p=0.026), increased maximal hematoma thickness (p<0.001), midline shifting (p=0.001) and accompanying subarachnoid hemorrhage (p=0.022) on initial brain computed tomography (CT) scan, low hemoglobin level (p<0.001), high leukocyte count (p=0.004), and low glucose level (p=0.002) were significantly associated with delayed surgical intervention. In multivariate analysis, increased maximal hematoma thickness (odds ratio [OR]=1.279, 95% confidence interval [CI] 1.075–1.521; p=0.006), low hemoglobin level (OR=0.673, 95% CI 0.467–0.970; p=0.034), and high leukocyte count (OR=1.142, 95% CI 1.024–1.272; p=0.017) were independent risk factors for delayed surgical intervention. CONCLUSION: Due to the high likelihood of delayed surgical intervention among minimal ASDH patients with a thicker hematoma on initial brain CT, lower hemoglobin level, and higher leukocyte count, these patients should receive more careful observation.
Brain
;
Cerebral Infarction
;
Diabetes Mellitus
;
Glucose
;
Heart Diseases
;
Hematoma
;
Hematoma, Subdural*
;
Hematoma, Subdural, Acute
;
Humans
;
Hypertension
;
Leukocyte Count
;
Male
;
Multivariate Analysis
;
Prevalence
;
Retrospective Studies
;
Risk Factors*
;
Subarachnoid Hemorrhage
10.Open Reduction Through the Modified Volar Approach in Complex Dorsal Dislocations of the Metacarpophalangeal Joint.
Soo Joong CHOI ; Bong Cheol KWON ; Yong Beom LEE ; Won Hyoung SHIN
Journal of the Korean Society for Surgery of the Hand 2011;16(3):149-153
PURPOSE: To describe the surgical treatment of the complex dorsal metacarpophalangeal dislocations and its results, emphasizing on the modified volar approach with A1 pulley release. MATERIALS AND METHODS: We experienced 6 cases of dorsal dislocation of the metacarpophalangeal joint. We performed open reduction with the modified volar approach described by Eaton and Dray. Postoperatively posteroanterior and lateral radiographs of the index finger metacarpophalangeal joint and metacarpophalangeal joint range of motion was followed. RESULTS: One case with a large osteochondral fracture was operated with volar and doral approach both. Overall end results were good without any significant restriction of motion and stability of the fingers. CONCLUSION: Modified volar approach with A1 pulley release is an excellent method for complex dorsal metacarpophalangeal dislocations without osteochondral fracture.
Benzodiazepines
;
Dislocations
;
Fingers
;
Metacarpophalangeal Joint
;
Range of Motion, Articular