1.A case of skin problems in a worker using a visual display terminal.
Kyung Hoon KIM ; Ji Seog YOON ; Yeong Ho KIM ; Jeung Hoon LEE ; Jang kyu PARK
Korean Journal of Dermatology 1993;31(5):796-799
We report a case of a skin problem induced by a visual display t rminal in a 24-year-old female. The patient had erythematcn.is rashes, crusts on both zygomatic areas and upper eyelids with itching, burning and pain sensations after she had been exposed to her visual display terminal. After the cassation of exposure, her skin lesions were markedly improved. A proioction test with her own visual display terminal was positive.
Burns
;
Exanthema
;
Eyelids
;
Female
;
Humans
;
Pruritus
;
Sensation
;
Skin*
;
Young Adult
2.Non-Hodgkin Lymphoma Containing Low Attenuation Area at Enhanced CT: Correlation with Histopathologic Typing.
Hyung Jin KIM ; Sung Hoon CHUNG ; Ji Hyun PARK ; In Oak AHN ; Kyung Hoon LEE
Journal of the Korean Radiological Society 1994;31(6):1191-1194
PURPOSE: To evaluate the frequently of low ahetenuation area in enhanced CT scans of non-Hodgkin lymphoma(NHL) and to find out if there is any pertinent relationship between this and the histopathologic classification. MATERIALS & METHODS: The authors reviewed CT scans in the newly diagnosed 53 patients with NHL. We defined the-low attenuation area as the one with CT attenuation value lower than that of the muscle, surrounding lesion, or other lymph nodes after contrast enhancement. NHL with the low attenuation areas were correlated with the histopathologic findings according to the classification based on the Working Formulation and the frequency of the lesion was evaluated. RESULT: Of the 53 patients, the low attenuation area was found in 13 patients (25%) at CT. The histopathologic classification could be made in 12 patients, among whom one patient was classified as low grade, six as intermediate grade, and five as high-grade. Concerning the specific cell typing, the diffuse large cell type was most common in intermediate-grade NHL seen in five patients and the large cell, immunoblastic type was most common in high-grade NHL seen ih three patients. CONCLUSION: The authors concluded that the low attenution area within lymphoma is not an infrequent finding at CT, and there was no stastistically significant correlation between this finding and the prognostic grading of the Working Formulation.
Classification
;
Humans
;
Lymph Nodes
;
Lymphoma
;
Lymphoma, Non-Hodgkin*
;
Tomography, X-Ray Computed
3.Microleakage of the experimental composite resin with three component photoinitiator systems.
Journal of Korean Academy of Conservative Dentistry 2009;34(4):333-339
This study was done to determine if there is any difference in microleakage between experimental composite resins, in which various proportions of three component photoinitiators (Camphoroquinone, OPPI, Amine) were included. Four kinds of experimental composite resin were made by mixing 3.2% silanated barium glass (78 wt.%, average size; 1 microm) with each monomer system including variously proportioned photoinitiator systems used for photoinitiating BisGMA/BisEMA/TEGDMA monomer blend (37.5:37.5:25 wt.%). The weight percentage of each component were as follows (in sequence Camphoroquinone, OPPI, Amine): Group A - 0.5%, 0%, 1% / Group B - 2%, 0.2%, 2% / Group C - 0.2%, 1%, 0.2% / Group D - 1%, 1%, 2%. Each composite resin was used as a filling material for round class V cavities (diameter: 2/3 of mesiodistal width; depth: 1.5 mm) made on extracted human premolars and they were polymerized using curing light unit (XL 2500, 3M ESPE) for 40 s with an intensity of 600 mW/cm2. Teeth were thermocycled five-hundred times between 50degrees C and 550degrees C for 30s at each temperature. Electrical conductivity (microA) was recorded two times (just after thermocycling and after three-month storage in saline solution) by electrochemical method. Microleakage scores of each group according to evaluation time were as follows [Group: at first record / at second record; unit (microA)]: A: 3.80 (0.69) / 13.22 (4.48), B: 3.42 (1.33) / 18.84 (5.53), C: 4.18 (2.55) / 28.08 (7.75), D: 4.12 (1.86) / 7.41 (3.41). Just after thermocycling, there was no difference in microleakage between groups, however, group C showed the largest score after three-month storage. Although there seems to be no difference in microleakage between groups just after thermocycling, composite resin with highly concentrated initiation system or classical design (Camphoroquinone and Amine system) would be more desirable for minimizing microleakage after three-month storage.
Barium
;
Barium Compounds
;
Bicuspid
;
Composite Resins
;
Electric Conductivity
;
Glass
;
Humans
;
Light
;
Polymers
;
Silicon Dioxide
;
Terpenes
;
Tooth
4.Sleep Problems in Autism Spectrum Disorder.
Young Hui YANG ; Ji Hoon KIM ; Jin Seong LEE
Sleep Medicine and Psychophysiology 2013;20(2):53-58
Autism Spectrum Disorder (ASD) is characterized by persistent deficits in social communication and restricted, repetitive patterns of behavior and interest. Sleep problems are not uncommon in children with autism spectrum disorders. Symptoms of insomnia are the most frequent sleep problems in individuals with ASD. Sleep problems can cause significant difficulties in the daily life of children with ASD and their families. Genetic factor, deregulations of melatonin synthesis, extraneous environmental stimuli and psychiatric and medical conditions may cause sleep problems. The first line treatment of sleep problems in ASD includes managements for potential contributing factors and parent education about sleep hygiene care for child and behavioral therapy. Supplementation with melatonin may be effective before considering other medications, such as risperidone, clonidine, and mirtazapine.
Autistic Disorder*
;
Child
;
Autism Spectrum Disorder*
;
Clonidine
;
Education
;
Genetics
;
Humans
;
Hygiene
;
Melatonin
;
Parents
;
Risperidone
;
Sleep Initiation and Maintenance Disorders
5.Echocardiographic Evaluation of Sequential Change of Cardiac Function in Normal Neonates.
Ji In PARK ; Chul Ha KIM ; Byoung Hoon YOO
Journal of the Korean Pediatric Society 1990;33(11):1533-1539
No abstract available.
Echocardiography*
;
Humans
;
Infant, Newborn*
6.Generalized Chorea-Ballismus Associated with Nonketotic Hyperglycemia in Diabetes Mellitus: A Case Report.
Hyun Ran SHIN ; Ji Hoon KIM ; Mee Young PARK
Yeungnam University Journal of Medicine 2002;19(2):136-143
Even though the nonketotic hyperglycemia is a metabolic disorder, it complicates hemic- horea-hemiballism rarely. Moreover, generalized chorea-ballism associated with nonketotic hyperglycemia in diabetes mellitus is very rare, so it has not been reported in Korean literature. Although the precise pathophysiologic mechanisms of these disorders are still poorly understood, deficiency of gamma aminobutyric acid (GABA) in nonketotic hyperglycemia or reduced GABAnergic inhibition by striatal lesion may increase inhibitory output to subthalamic nucleus. These result loss of pallidal inhibition and produce contralateral hemichorea-hemiballism. The striatal lesions, such as transient ischemia with reactive astrocytosis or small amount of petechial hemorrhage, are related with changes of magnetic resonance image (MRI) findings presumably. We report a diabetic old woman who developed generalized chorea-ballismus as a very rare complication of nonketotic hyperglycemia. Her brain MRI showed high signal intensity in left lentiform nucleus and right pallidum on T1 weighted images and low signal intensity in bilateral putamen on T2 weighted images with highly enhanced corresponding lesions on T1 weighted enhancement images.
Brain
;
Corpus Striatum
;
Diabetes Mellitus*
;
Female
;
gamma-Aminobutyric Acid
;
Gliosis
;
Hemorrhage
;
Humans
;
Hyperglycemia*
;
Ischemia
;
Magnetic Resonance Imaging
;
Putamen
;
Subthalamic Nucleus
7.A comparative study of the effect of the CR-CO discrepancy on the mandibular movements.
Ji Hoon LEE ; Kwang Nam KIM ; Ik Tae CHANG
The Journal of Korean Academy of Prosthodontics 1991;29(2):295-317
No abstract available.
8.A Case of Congenital Hypofibrinogenemia.
Ji In PARK ; In Seok LIM ; Chul Ha KIM ; Byoung Hoon YOO
Journal of the Korean Pediatric Society 1990;33(7):1009-1011
No abstract available.
9.A Case of Recurred Vocal Polyp After Lasermicrosurgery Treated by Un-Sedated Office-Based KTP Laser Laryngeal Surgery
Journal of the Korean Society of Laryngology Phoniatrics and Logopedics 2024;35(2):79-84
Office-based KTP laser laryngeal surgery is suitable for patients who have difficulty undergoing general anesthesia or for whom it is not an option. It can also be offered as an alternative to patients who have a reluctance toward general anesthesia. This case involves a 50-year-old female who underwent general anesthesia surgery for a vocal fold polyp 4 years ago. The vocal fold polyp recurred, causing persistent hoarseness that significantly impacted her profession. The patient was unwilling to undergo second general anesthesia procedure. Therefore, office-based KTP laser laryngeal surgery was performed under local anesthesia. The patient has remained free of recurrence for 6 months post-surgery. In cases where vocal fold polyps recur after surgery, it may be beneficial to consider local anesthesia surgery, depending on the size of the lesion and the patient’s condition.
10.A Case of Recurred Vocal Polyp After Lasermicrosurgery Treated by Un-Sedated Office-Based KTP Laser Laryngeal Surgery
Journal of the Korean Society of Laryngology Phoniatrics and Logopedics 2024;35(2):79-84
Office-based KTP laser laryngeal surgery is suitable for patients who have difficulty undergoing general anesthesia or for whom it is not an option. It can also be offered as an alternative to patients who have a reluctance toward general anesthesia. This case involves a 50-year-old female who underwent general anesthesia surgery for a vocal fold polyp 4 years ago. The vocal fold polyp recurred, causing persistent hoarseness that significantly impacted her profession. The patient was unwilling to undergo second general anesthesia procedure. Therefore, office-based KTP laser laryngeal surgery was performed under local anesthesia. The patient has remained free of recurrence for 6 months post-surgery. In cases where vocal fold polyps recur after surgery, it may be beneficial to consider local anesthesia surgery, depending on the size of the lesion and the patient’s condition.