1.Primary Extracranial Fibrous Meningioma of the Maxillary Sinus: A Case Report and Literature Review
Hyunwoo CHO ; Sanghyeon KIM ; Myongjin KANG ; DongWon KIM
Journal of the Korean Radiological Society 2021;82(1):231-236
Meningioma is a common neoplasm of the central nervous system; however, primary extracranial meningioma of the paranasal sinus, especially the maxillary sinus, is rare. We report a case of primary extracranial meningioma (fibrous type) of the maxillary sinus and present a literature review of the imaging features that correlate with fibrous meningioma.
2.Early Improvement in One Week Predicts the Treatment Response to Escitalopram in Patients with Social Anxiety Disorder: A Preliminary Study.
Kang Seob OH ; Eunsook SHIN ; Juwon HA ; Dongwon SHIN ; Youngchul SHIN ; Se Won LIM
Clinical Psychopharmacology and Neuroscience 2016;14(2):161-167
OBJECTIVE: Social anxiety disorder (SAD) shows relatively delayed responses to pharmacotherapy when compared to other anxiety disorders. Therefore, more effective early therapeutic decisions can be made if the therapeutic response is predictable as early as possible. We studied whether the therapeutic response at 12 weeks is predictable based on the early improvement with escitalopram at 1 week. METHODS: The subjects were 28 outpatients diagnosed with SAD. The subjects took 10-20 mg/day of escitalopram. The results of the Liebowitz social anxiety scale (LSAS), Hamilton anxiety rating scale, and Montgomery-Asberg depression rating scale were evaluated at 0, 1, 4, 8, and 12 weeks of treatment. Early improvement was defined as a ≥10% reduction in the LSAS total at 1 week of treatment, and endpoint response was defined as a ≥35% reduction in the LSAS total score. The correlation between clinical characteristics and therapeutic responses was analyzed by simple linear regression. The correlation between early improvement responses and endpoint responses was analyzed by multivariate logistic regression analysis and receiver operating characteristic curves. RESULTS: When we adjusted the influence of a ≥35% reduction in the LSAS total endpoint score on a ≥10% reduction of the LSAS total score at 1 week of treatment for the patients' age, the early improvement group at 1 week of treatment was expected to show stronger endpoint responses compared to the group with no early improvement. CONCLUSION: The results suggest that a ≥10% reduction in the LSAS total score in a week can predict endpoint treatment response.
Anxiety Disorders*
;
Anxiety*
;
Citalopram*
;
Depression
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Drug Therapy
;
Humans
;
Linear Models
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Logistic Models
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Outpatients
;
Phobic Disorders
;
ROC Curve
3.A Case of Subacute Thyroiditis Associated with Papillary Thyroid Carcinoma and Takayasu's Arteritis.
Dongwon YI ; Seung Hoon BAEK ; Seok Man SON ; Yang Ho KANG
Endocrinology and Metabolism 2011;26(4):324-329
Subacute thyroiditis is a self-limiting inflammation of the thyroid, presenting with painful thyroid swelling, thyrotoxicosis and low radioactive iodine uptake. The characteristic US findings for this disease are focal ill-defined hypoechoic areas in one lobe or diffuse hypoechoic areas in both lobes. Thyroid carcinomas should be included in the differential diagnosis for a lesion with focal hypoechoic areas and have been rarely reported to coexist with subacute thyroiditis. Takayasu's arteritis is an autoimmune disease that affects the aorta and its branches as well as pulmonary arteries. Subacute thyroiditis associated with Takayasu's arteritis is extremely rare, with only three cases being reported. We report here on the first case with the simultaneous diagnosis of subacute thyroiditis, papillary thyroid carcinoma and Takayasu's arteritis.
Aorta
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Autoimmune Diseases
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Carcinoma
;
Diagnosis, Differential
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Inflammation
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Iodine
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Pulmonary Artery
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Takayasu Arteritis
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Thyroid Gland
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Thyroid Neoplasms
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Thyroiditis, Subacute
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Thyrotoxicosis
4.Drug-Induced Diabetes Mellitus.
Journal of Korean Diabetes 2017;18(3):160-168
Drug-induced diabetes is becoming more prevalent as a result of individuals taking diverse types of medication. A variety of drugs can impair glucose tolerance through several mechanisms, including increased insulin resistance, diminished insulin secretion, or both. Efforts should be made to identify and closely monitor patients receiving drugs that may alter glucose metabolism as diabetes is a leading cause of morbidity and mortality. We review the latest data concerning commonly used drugs associated with development of diabetes and present postulated mechanisms by which the drugs might cause diabetes.
Diabetes Mellitus*
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Drug-Related Side Effects and Adverse Reactions
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Glucose
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Humans
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Hyperglycemia
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Insulin
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Insulin Resistance
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Metabolic Side Effects of Drugs and Substances
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Metabolism
;
Mortality
5.Automatic Prediction of Atrial Fibrillation Based on Convolutional Neural Network Using a Short-term Normal Electrocardiogram Signal
Urtnasan ERDENEBAYAR ; Hyeonggon KIM ; Jong Uk PARK ; Dongwon KANG ; Kyoung Joung LEE
Journal of Korean Medical Science 2019;34(7):e64-
BACKGROUND: In this study, we propose a method for automatically predicting atrial fibrillation (AF) based on convolutional neural network (CNN) using a short-term normal electrocardiogram (ECG) signal. METHODS: We designed a CNN model and optimized it by dropout and normalization. One-dimensional convolution, max-pooling, and fully-connected multiple perceptron were used to analyze the short-term normal ECG. The ECG signal was preprocessed and segmented to train and evaluate the proposed CNN model. The training and test sets consisted of the two AF and one normal dataset from the MIT-BIH database. RESULTS: The proposed CNN model for the automatic prediction of AF achieved a high performance with a sensitivity of 98.6%, a specificity of 98.7%, and an accuracy of 98.7%. CONCLUSION: The results show the possibility of automatically predicting AF based on the CNN model using a short-term normal ECG signal. The proposed CNN model for the automatic prediction of AF can be a helpful tool for the early diagnosis of AF in healthcare fields.
Atrial Fibrillation
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Dataset
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Delivery of Health Care
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Early Diagnosis
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Electrocardiography
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Methods
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Neural Networks (Computer)
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Sensitivity and Specificity
6.Clinical impact of fat clearing technique in nodal staging of rectal cancer after preoperative chemoradiotherapy.
Im Kyung KIM ; Beom Jin LIM ; Jeonghyun KANG ; Seong Ah KIM ; Dongwon KANG ; Seung Kook SOHN ; Kang Young LEE
Journal of the Korean Surgical Society 2013;85(1):30-34
PURPOSE: This study was designed to evaluate the efficacy of a fat clearing technique for accurate nodal staging of rectal cancer patients after preoperative chemoradiotherapy (CRT). METHODS: A total of 19 patients with rectal cancer within 10 cm from anal verge were divided into two groups: non-CRT group (n = 10) and CRT group (n = 9). For pathologic assessment, lymph node (LN) harvest was performed using conventional manual dissection followed by a fat clearing technique. RESULTS: A median of 3.0 additional LNs in non-CRT group and 3.8 LNs in CRT group were identified by the fat clearing technique. When subanalysis was performed in patients with fewer than 12 retrieved LNs, a median of 4.0 extra LNs in non-CRT group and 3.5 extra LNs in CRT group were identified after the fat clearing technique. None of additionally identified nodes were metastatic. In both groups, the median size of retrieved LNs following the fat clearing technique was smaller than that obtained by manual dissection (2.0 mm vs. 3.0 mm, P < 0.001). CONCLUSION: The fat clearing technique allowed detection of additional LNs that were missed by the manual method, but these detected LNs were not proven to be metastatic.
Chemoradiotherapy
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Humans
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Lymph Nodes
;
Rectal Neoplasms
7.Factors Associated with Re-excision after Breast-Conserving Surgery for Early-Stage Breast Cancer.
Woohyun JUNG ; Eunyoung KANG ; Sun Mi KIM ; Dongwon KIM ; Yoonsun HWANG ; Young SUN ; Cha Kyong YOM ; Sung Won KIM
Journal of Breast Cancer 2012;15(4):412-419
PURPOSE: Re-excisions after breast-conserving surgery (BCS) for breast cancer cause delays in the adjuvant treatment, increased morbidity, and leads to poor aesthetic results. Thus, efforts to reduce the re-excision rate are essential. This study aimed to conclusively determine the re-excision rate and the factors associated with re-excision after BCS. METHODS: We retrospectively reviewed the medical records and pathological reports of 711 cases that underwent BCS for early-stage breast cancer. Univariate and multivariate analyses were performed. RESULTS: Of the 711 cases of BCS, 71 (10.0%) required re-excision. Patients in the re-excision group were younger than those in the no re-excision group. Non-palpable lesions, the presence of non-mass-like enhancement at magnetic resonance imaging, multifocality, the presence of a ductal carcinoma in situ (DCIS) component, and an infiltrative tumor border were also significantly associated with re-excision. Multivariate analysis indicated that younger age, non-palpable lesions, multifocal lesions, and the presence of a DCIS component were factors which were independently associated with re-excision. Tumors located in the lower inner quadrant had a relatively high involved resection margin rate as well as a narrow resection margin width, especially at the superior and medial margins. Lateral margins showed a tendency toward a wider resection margin width. CONCLUSION: At our institution, the rate of re-excision was low despite the lack of an intraoperative frozen section. Patients with non-palpable or multifocal tumors, a DCIS component, or those who were younger than 50 years were more likely to require re-excision after BCS. These factors should be considered when planning surgical management of early-stage breast cancer. Positive resection margin rates and margin widths differed on a directional basis based on tumor location, and these differences were considerable.
Breast
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Breast Neoplasms
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Carcinoma, Intraductal, Noninfiltrating
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Frozen Sections
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Humans
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Magnetic Resonance Imaging
;
Mastectomy, Segmental
;
Medical Records
;
Multivariate Analysis
;
Retrospective Studies
8.The Korean Practice Parameter for the Treatment of Attention-Deficit Hyperactivity Disorder(IV): Non-Pharmacologic Treatment.
Bung Nyun KIM ; Hanik K YOO ; Hwayeon KANG ; Ji Hoon KIM ; Dongwon SHIN ; Donghyun AHN ; Su Jin YANG ; Hee Jeong YOO ; Keun Ah CHEON ; Hyunju HONG
Journal of the Korean Academy of Child and Adolescent Psychiatry 2007;18(1):26-30
This practice parameter for non-pharmacological treatment for attention-deficit hyperactivity disorder(ADHD) review the domestic and international literature on the psychosocial treatment of children and adolescents with ADHD. This parameter include the parental training & education, cognitive behavior therapy(group or individual), social skill training, family therapy, play therapy(individual psychotherapy) and non-traditional therapy(art therapy, herbal therapy et al). Among them, there is some proven evidence only in parental training & education and cognitive behavior therapy. So, this parameter describes some details only in the field of parental training & education and cognitive behavior therapy. The efficacy or effectiveness, especially, cost-effectiveness of specific psychosocial treatment method for ADHD cannot be fairly assessed due to the scarcity of controlled clinical data. Based on the clinical expert consensus and limited evidence, we cautiously suggest the practice recommendations about the non-pharmacological psychosocial treatment for children and adolescents with ADHD.
Adolescent
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Child
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Cognitive Therapy
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Consensus
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Education
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Family Therapy
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Humans
;
Parents
;
Phytotherapy
9.The Korean Practice Parameter for the Treatment of Attention-Deficit Hyperactivity Disorder(III): Pharmacologic Treatment.
Hee Jeong YOO ; Su Jin YANG ; Dongwon SHIN ; Hwayeon KANG ; Bung Nyun KIM ; Ji Hoon KIM ; Donghyun AHN ; Hanik K YOO ; Keun Ah CHEON ; Hyunju HONG
Journal of the Korean Academy of Child and Adolescent Psychiatry 2007;18(1):16-25
The objective of this review is to propose the Korean practice guideline for pharmacological treatment of attentiondeficit hyperactivity disorder(ADHD). For making the guideline, the authors used the evidence-base approaches derived from a detailed review of literature including wide range of controlled clinical trials, studies of side effects of drugs, toxicological reports, and meta-analyses published in United States and Europe, as well as inside Korea. The review committee composed of experts in ADHD in Korea has reviewed the parameter. The practice parameter for pharmacological treatment describes the use of stimulants, atomoxetine, modafinil, bupropion, tricyclic antidepressants, and alpha-adrenergic agonists and their side effects. The recommendations of pharmacological treatment are proposed at the end of the article.
Adrenergic alpha-Agonists
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Advisory Committees
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Antidepressive Agents, Tricyclic
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Bupropion
;
Europe
;
Korea
;
United States
;
Atomoxetine Hydrochloride
10.The Korean Practice Parameter for the Treatment of Attention-Deficit Hyperactivity Disorder(II): Diagnosis and Assessment.
Keun Ah CHEON ; Ji Hoon KIM ; Hwayeon KANG ; Bung Nyun KIM ; Dongwon SHIN ; Donghyun AHN ; Su Jin YANG ; Hanik K YOO ; Hee Jeong YOO ; Hyunju HONG
Journal of the Korean Academy of Child and Adolescent Psychiatry 2007;18(1):10-15
Probably the three most important components to a comprehensive evaluation of patients with attention-deficit hyperactivity disorder(ADHD) are the clinical interview, the medical examination, and the completion and scoring of behavior rating scales. Teachers and other school personnel are often the first to recognize that a child or adolescent might have ADHD, and often play an important role in the help-seeking/referral process. A diagnostic evaluation for ADHD should include questions about ADHD symptoms, other problems including alcohol and drug use, family history of ADHD, prior evaluation and treatment for ADHD. Screening interview or rating scales as well as interviews should be used. When it is feasible, clinicians may wish to supplement these components of the evaluation with objective assessments of the ADHD symptoms, such as psychological tests. These tests are not essential to reaching a diagnosis, however, or to treatment planning, but they may yield further information about the presence and severity of cognitive impairments that could be associated with some cases of ADHD. Screening for intellectual ability and academic achievement skills is also important in determining the presence of comorbid developmental delay or learning disabilities. The number and type of symptoms required for a diagnosis of ADHD vary depending on the specific subtype. To receive a diagnosis of ADHD, the person must be experiencing significant distress or impairment in daily functioning, and must not meet criteria for other mental disorders which might better account for the observed symptoms such as mental retardation, autism or other pervasive developmental disorders, mood disorders, anxiety disorders. This report aims to suggest a practice guideline of assessment and diagnosis for children and adolescents with ADHD in Korea.
Adolescent
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Anxiety Disorders
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Autistic Disorder
;
Child
;
Diagnosis*
;
Humans
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Intellectual Disability
;
Korea
;
Learning Disorders
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Mass Screening
;
Mental Disorders
;
Mood Disorders
;
Psychological Tests
;
Weights and Measures