1.Application of Comptuted Tomography for Tibial Condylar Fractures
Joon Young KIM ; Woo Shin CHO ; Ryuh Sup KIM ; Byoung Kwon KANG
The Journal of the Korean Orthopaedic Association 1987;22(1):260-268
In planning treatment of tibial condylar fracture, the patient's age and physical condition, associated ligament injury and accurate fracture diagnosis, such as presence and degree of separatiori of split fragment, type of fracture and the severity of comminution must be considered. For accurate diagnosis, many kinds of methods including simple X-ray, arthroscopy, arthrography and tomography can be used. In spite of these procedures, sometimes we cannot know the accurate fracture morphology. The computed tomography(CT) has many advantages over other diagnostic methods. The application of CT in the evaluation of patients with spinal and pelvic fractures has been established, but rarely has its usefulness been noted in tibial condylar fracture. We thought that in assessing tibial condylar fracture, CT is more useful and accurate than conventional radiography. From March 1985 to August 1986, we took 17 patients(18 cases) of tibial condylar CT and were convinced with that it is a good diagnostic method. The results are as follows: l. In 5 cases, we could find a new fracture on CT film, which was impossible to be detected on simple X-ray. 2. In 7 cases, the fracture classification by plain X-rays was changed after CT check-up. 3. We could make the decision of treatment methods easily through more realistic classification and better recognition of split and comminution. 4. Proper approach could be done by understanding the accurate fracture size and localization.
Arthrography
;
Arthroscopy
;
Classification
;
Diagnosis
;
Humans
;
Ligaments
;
Methods
;
Radiography
2.Elevated Serum C-Reactive Protein as a Prognostic Marker in Small Cell Lung Cancer.
Soojung HONG ; Young Ae KANG ; Byoung Chul CHO ; Dae Joon KIM
Yonsei Medical Journal 2012;53(1):111-117
PURPOSE: Elevated C-reactive protein (CRP) is associated with poor prognosis in several tumor types. The purpose of this study was to investigate serum CRP as a prognostic marker in small cell lung cancer (SCLC). MATERIALS AND METHODS: The pretreatment serum CRP level was measured in 157 newly diagnosed SCLC patients, and correlation between serum CRP level and other clinical parameters was analyzed. Multivariate analyses were performed to find prognostic markers using Cox's proportional hazards model. RESULTS: The initial CRP concentration was within the normal range in 72 (45.9%) patients and elevated in 85 (54.1%) patients. There was a significant correlation between serum CRP level and the extent of disease (p<0.001), weight loss (p=0.029) and chest radiation (p=0.001). Median overall survival (OS) in the normal CRp group was significantly longer than with the high CRp group (22.5 months vs. 11.2 months, p<0.001). Extent of disease (p<0.001), age (p=0.025), and performance status (p<0.001) were additional prognostic factors on univariate analysis. On multivariate analysis, elevated serum CRp level was an independent prognostic factor for poor survival (HR=1.8; p=0.014), regardless of the extent of disease (HR=3.7; p<0.001) and performance status (HR=2.2; p<0.001). CONCLUSION: High level of CRP was an independent poor prognostic serum marker in addition to previously well-known prognosticators in patients with SCLC.
Aged
;
Aged, 80 and over
;
Biological Markers/blood
;
C-Reactive Protein/*metabolism
;
Female
;
Humans
;
Kaplan-Meier Estimate
;
Lung Neoplasms/*blood/*mortality
;
Male
;
Middle Aged
;
Predictive Value of Tests
;
Prognosis
;
Small Cell Lung Carcinoma/*blood/*mortality
3.Prolonged Corrected QT Interval in Patients with Myotonic Dystrophy Type 1.
Kang Min PARK ; Kyong Jin SHIN ; Sung Eun KIM ; Jinse PARK ; Sam Yeol HA ; Byoung Joon KIM
Journal of Clinical Neurology 2013;9(3):186-191
BACKGROUND AND PURPOSE: Sudden cardiac death is one of the leading causes of death in patients with myotonic dystrophy type 1 (DM1). It has been proposed that a prolonged QT interval is associated with sudden cardiac death in several neurological diseases, including multiple system atrophy, idiopathic Parkinson's disease, and diabetic autonomic neuropathy. However, analyses of the corrected QT (QTc) interval in DM1 patients are rare in the literature. The purposes of this study were to determine the association between the QT interval and DM1, and the affecting factors. METHODS: Thirty-nine patients diagnosed with DM1 through genetic testing were enrolled. The QTc interval (calculated using Bazett's formula: QTc=QT/radicalRR) was compared between these patients and 39 normal healthy controls. The clinical and laboratory factors affecting QTc interval in the patient group were investigated. RESULTS: The QTc interval was significantly longer in the DM1 group (411.2+/-44.7 msec, mean+/-SD) than in the normal control group (355.6+/-20.6 msec). Intragroup analysis revealed that a prolonged QTc interval in DM1 patients was associated with being female and older, having a longer disease duration, and exhibiting abnormal electrocardiography findings. CONCLUSIONS: The higher incidence of sudden cardiac death in the DM1 population is associated with the observed prolonged QTc interval in those patients.
Cause of Death
;
Death, Sudden, Cardiac
;
Diabetic Neuropathies
;
Electrocardiography
;
Female
;
Genetic Testing
;
Humans
;
Incidence
;
Multiple System Atrophy
;
Myotonic Dystrophy
;
Parkinson Disease
4.Change in serum proteome during allogeneic hematopoietic stem cell transplantation and clinical significance of serum C-reactive protein and haptoglobin.
Joohyun RYU ; Se Ryeon LEE ; Sung Goo PARK ; Sunghyun KANG ; Hyeoung Joon KIM ; Byoung Chul PARK
Experimental & Molecular Medicine 2010;42(9):651-661
Successful hematopoietic stem cell transplantation (HSCT) involves the restoration of hematopoietic function after engraftment, arising from the differentiation and proliferation of hematopoietic stem cells. Several factors could influence the course of allogeneic-HSCT (allo-HSCT). Therefore, knowledge of serum proteome changes during the allo-HSCT period might increase the efficacy of diagnosis and disease prevention efforts. This study conducted proteomic analyses to find proteins that were significantly altered in response to allo-HSCT. Sera from five representative patients who underwent allo-HSCT were analyzed by 2-dimensional gel electrophoresis and liquid chromatography tandem mass spectrometry, and were measured on a weekly basis before and after allo-HSCT in additional 78 patients. Fourteen protein spots showing changes in expression were further examined, and most proteins were identified as acute phase proteins (APPs). Studies of 78 additional patients confirmed that C-reactive protein (CRP) and haptoglobin undergo expression changes during allo-HSCT and thus may have the potential to serve as representative markers of clinical events after allo-HSCT. Maximal CRP level affected the development of major transplant-related complications (MTCs) and other problems such as fever of unknown origin. Particularly, an increase in CRP level 21 days after allo-HSCT was found to be an independent risk factor for MTC. Maximal haptoglobin and haptoglobin level 14 days after allo-HSCT were predictive of relapses in underlying hematologic disease. Our results indicated that CRP and haptoglobin were significantly expressed during allo-HSCT, and suggest that their level can be monitored after allo-HSCT to assess the risks of early transplant-related complications and relapse.
Adolescent
;
Adult
;
Biological Markers
;
C-Reactive Protein/*metabolism
;
Female
;
Haptoglobins/*metabolism
;
Hematopoietic Stem Cell Transplantation/*adverse effects
;
Humans
;
Male
;
Middle Aged
;
Proteome/*metabolism
;
Proteomics
;
Transplantation Conditioning
;
Transplantation, Homologous
;
Young Adult
5.Relationship Between the Level of Methicillin Resistance and mecA, mecI, femA Genes Genes in Staphylococci.
Hae Kyung LEE ; Eun Jung LEE ; Yeon Joon PAHK ; Byoung Ki KIM ; Moon Won KANG ; Sang In SHIM
Korean Journal of Infectious Diseases 1998;30(1):36-44
BACKGROUND: About 60~70% of hospital isolates of staphylococci are resistant to methicillin. The level of resistance varies from low to high depending upon the genetic background of the strains. The purpose of this study was twofold : (i) to understand the relationship between beta-lactamase and methicillin-resistance genes(mecA, mecI, mecR1, femA) and the level of resistance and (ii) to survey the distribution of mec regulator genes(mec I, mecR1) among methicillin-resistant staphylococci. METHODS: Eighty-three isolates of Staphylococus aureus and 29 of coagulase-negative staphylococci(CNS) at Catholic University Hospital were examined. The level of methicillin resistance was studied using disk diffusion test and agar dilution test. MecA, mecI, mecR1, and femA genes detected by polymerase chain reaction. RESULTS: beta-lactamase production was significantly high in S. aureus and CNS isolates with low-level resistance. MecA and mecR1 genes amplification correlated with the level of resistance in S. aureus and CNS isolates. There was no correlation between the level of resistance and mecI and fem A genes amplification in S. aureus and CNS isolates. Methicillin- resistant S. aureus isolates showed more variety in mec regulator region than methicillin-resistant CNS isolates. CONCLUSION: From this study, we conclude that mecR1 gene could be considered as one of the important factors influencing the level of methicillin resistance in staphylococcal strains.
Agar
;
beta-Lactamases
;
Diffusion
;
Genes, vif
;
Methicillin Resistance*
;
Methicillin*
;
Polymerase Chain Reaction
6.Clinical Usefulness of Cell-based Indirect Immunofluorescence Assay for the Detection of Aquaporin-4 Antibodies in Neuromyelitis Optica Spectrum Disorder.
Eun Suk KANG ; Ju Hong MIN ; Kwang Ho LEE ; Byoung Joon KIM
Annals of Laboratory Medicine 2012;32(5):331-338
BACKGROUND: The presence of antibodies to aquaporin-4 (AQP4) has been identified as a key characteristic of neuromyelitis optica spectrum disorder (NMOSD), an autoimmune inflammatory demyelinating central nervous system (CNS) disorder. We evaluated the performance of a cell-based indirect immunofluorescence assay (CIIFA) for detecting AQP4 antibodies using antigen prepared with a recombinant AQP4 peptide transfection technique and assessed the usefulness of CIIFA for diagnosis of NMOSD in routine clinical practice. METHODS: Forty-six serum samples from 36 patients as a comparison set and another 101 patients enrolled consecutively from a neurology clinic were included. CIIFA and fluorescence immunoprecipitation assays (FIPA) were performed. CIIFA was performed at 2 different institutions for comparison purposes. RESULTS: CIIFA and FIPA sensitivity in the comparison set was 86% and 79% in neuromyelitis optica (NMO) patients and 55% and 36% in high-risk NMO patients, respectively. The semiquantitative titer measured by CIIFA correlated well with the arbitrary unit (fluorescence units [FU]) derived from FIPA (r=0.66). Titers measured by CIIFA and FIPA were elevated in NMO patients compared to high-risk NMO patients (1:240 vs. 1:180 and 8,390 vs. 4,059 FU, respectively). The frequency of AQP4 antibody detection by CIIFA in 101 consecutively enrolled patients was 100% in NMO and 23% in high-risk NMO patients, while only 4.6% in control patients, including those with multiple sclerosis. CONCLUSIONS: Detection of AQP4 antibodies by CIIFA provides sensitive and highly specific diagnostic information for NMO and high-risk NMO patients, which can be used to differentiate these conditions from other demyelinating CNS diseases.
Adult
;
Aged
;
Antibodies/*blood
;
Aquaporin 4/*immunology
;
Female
;
*Fluorescent Antibody Technique, Indirect
;
Humans
;
Male
;
Middle Aged
;
Neuromyelitis Optica/*diagnosis
;
Reagent Kits, Diagnostic
7.Clinical Usefulness of Cell-based Indirect Immunofluorescence Assay for the Detection of Aquaporin-4 Antibodies in Neuromyelitis Optica Spectrum Disorder.
Eun Suk KANG ; Ju Hong MIN ; Kwang Ho LEE ; Byoung Joon KIM
Annals of Laboratory Medicine 2012;32(5):331-338
BACKGROUND: The presence of antibodies to aquaporin-4 (AQP4) has been identified as a key characteristic of neuromyelitis optica spectrum disorder (NMOSD), an autoimmune inflammatory demyelinating central nervous system (CNS) disorder. We evaluated the performance of a cell-based indirect immunofluorescence assay (CIIFA) for detecting AQP4 antibodies using antigen prepared with a recombinant AQP4 peptide transfection technique and assessed the usefulness of CIIFA for diagnosis of NMOSD in routine clinical practice. METHODS: Forty-six serum samples from 36 patients as a comparison set and another 101 patients enrolled consecutively from a neurology clinic were included. CIIFA and fluorescence immunoprecipitation assays (FIPA) were performed. CIIFA was performed at 2 different institutions for comparison purposes. RESULTS: CIIFA and FIPA sensitivity in the comparison set was 86% and 79% in neuromyelitis optica (NMO) patients and 55% and 36% in high-risk NMO patients, respectively. The semiquantitative titer measured by CIIFA correlated well with the arbitrary unit (fluorescence units [FU]) derived from FIPA (r=0.66). Titers measured by CIIFA and FIPA were elevated in NMO patients compared to high-risk NMO patients (1:240 vs. 1:180 and 8,390 vs. 4,059 FU, respectively). The frequency of AQP4 antibody detection by CIIFA in 101 consecutively enrolled patients was 100% in NMO and 23% in high-risk NMO patients, while only 4.6% in control patients, including those with multiple sclerosis. CONCLUSIONS: Detection of AQP4 antibodies by CIIFA provides sensitive and highly specific diagnostic information for NMO and high-risk NMO patients, which can be used to differentiate these conditions from other demyelinating CNS diseases.
Adult
;
Aged
;
Antibodies/*blood
;
Aquaporin 4/*immunology
;
Female
;
*Fluorescent Antibody Technique, Indirect
;
Humans
;
Male
;
Middle Aged
;
Neuromyelitis Optica/*diagnosis
;
Reagent Kits, Diagnostic
8.Actinomycosis-Superinfected Peripheral T Cell Lymphoma Presenting as a Perforating Palatal Ulcer.
Eun Goo KANG ; Yong Man LEE ; Kye Hoon PARK ; Byoung Joon BAEK
Korean Journal of Otolaryngology - Head and Neck Surgery 2009;52(6):545-548
Peripheral T cell neoplasms (PTCNs) comprise a group of uncommon and heterogenous lymphoid malignancies. They are more difficult to diagnose and treat and have a worse prognosis than B cell lymphomas. NK/T cell lymphoma is the most common histologic subtype in the head and neck. Unspecified type is the most common subtype of PTCNs but is not reportedin oral cavity or nasal cavity. We report a case of a perforating palatal ulceras a rare presentation of peripheral T cell lymphoma with a review of literature.
Actinomycosis
;
Head
;
Lymphoma
;
Lymphoma, B-Cell
;
Lymphoma, T-Cell, Peripheral
;
Mouth
;
Nasal Cavity
;
Neck
;
Palate, Hard
;
Prognosis
;
Ulcer
9.Restoration of Atrial Mechanical Function after Successful Radio-Frequency Catheter Ablation of Atrial Flutter.
Kyoung Suk RHEE ; Duk Hyun KANG ; Jae Kwan SONG ; Gi Byoung NAM ; Kee Joon CHOI ; You Ho KIM
The Korean Journal of Internal Medicine 2001;16(2):69-74
BACKGROUND: Atrial mechanical dysfunction and its recovery time course after successful radiofrequency ablation of chronic atrial flutter (AFL) has been largely unknown. We serially evaluated left atrial function by echocardiography after successful ablation of chronic atrial flutter. METHODS: In 13 patients with chronic AFL, mitral E wave A wave, and the ratio of A/E velocity were measured at 1 day, 1 month, 3 months and 6-12 months after successful radiofrequency (RF) ablation. Doppler tissue imaging (DTI) technique was also used to avoid load-dependent variation in the flow velocity pattern. RESULTS: Left atrial mechanical function, assessed by A wave velocity and the annular motion, was depressed at 1 day, but improved significantly at 1 month and maintained through 6-12 months after the ablation. Left atrial size did not change significantly. CONCLUSION: Left atrial mechanical function was depressed immediately after successful RF ablation of chronic AFL, but it improved significantly after 1 month and was maintained over one year.
Adult
;
Aged
;
Atrial Flutter/*surgery/*ultrasonography
;
Atrial Function
;
Catheter Ablation/*methods
;
Echocardiography, Doppler
;
Female
;
Follow-Up Studies
;
Human
;
Male
;
Middle Age
;
Sensitivity and Specificity
;
Treatment Outcome
10.Colonization of Staphylococcus aureus and sensitivity to antibiotics in children with atopic dermatitis.
Yoonha HWANG ; Joon Seok KANG ; Byoung Kuk KIM ; Sung Won KIM
Allergy, Asthma & Respiratory Disease 2017;5(1):21-26
PURPOSE: Staphylococcus aureus colonization exacerbates atopic dermatitis. Local or systemic antibiotics can increase difficulty in controlling skin colonization and the possibility of methicillin-resistant S. aureus (MRSA). Choosing appropriate antibiotics has become more challenging. We investigated the frequency of S. aureus and MRSA colonization and susceptibility to antimicrobial agents. METHODS: We collected and cultivated the skin colonization samples of atopic dermatitis children less than 20 years old from June 2006 to May 2016, and tested the antibiotic sensitivity. We also checked the severity of atopic dermatitis by SCORing Atopic Dermatitis (SCORAD) index and analyzed. RESULTS: Out of 2,355 subjects, 1,935 (82.2%) had S. aureus and 762 (39.4%) had MRSA. The frequency of MRSA increased from 13.3% in 2006 to 26.6% in 2007, 18.4% in 2008, 27.1% in 2009, 38.3% in 2010, 42.6% in 2011, 42.4% in 2012, 48.3% in 2013, 44.5% in 2014, 38.1% in 2015, and 37.5% in 2016. Mupirocin resistance started with 0% in 2009, and gradually increased annually to 13.7% in 2010, 14.7% in 2011, 25.4% in 2012, 35.2% in 2013, 34.9% in 2014, 39.8% in 2015, and 35.6% in 2016. The mupirocin resistant group has a higher SCORAD index than the other groups (P<0.05). CONCLUSION: MRSA frequency and mupirocin resistance tended to increase annually. We should choose the methods of managing bacterial colonization in atopic dermatitis carefully in order to prevent antibiotic resistance.
Anti-Bacterial Agents*
;
Anti-Infective Agents
;
Child*
;
Colon*
;
Dermatitis, Atopic*
;
Drug Resistance
;
Drug Resistance, Microbial
;
Humans
;
Methicillin Resistance
;
Methicillin-Resistant Staphylococcus aureus
;
Mupirocin
;
Skin
;
Staphylococcus aureus*
;
Staphylococcus*