1.A Case of Pityriasis Lichenoide Chronica Associated with Pseudoacanthosis Nigricans.
Jin Kwon KIM ; Young Hee HWANG ; Hong Il KOOK
Korean Journal of Dermatology 1982;20(3):437-441
Pityriasis lichenoides chronica is considered to be a benign disease. Erythematous yelIowieh scaly maeulea appear insidiously, chiefly on the sides of trunk, thighs and upper arms. Acanthosis nigricans is a rare cutaneous disorder with peak incidence in puberty characterized by hyperkeratosis and, dark pigmentation. We report a case of pityriasis lichenoides chronica assaciated with pseudoacanthosis nigricans in a 14 year-old obeae male patient who has bean sized erythematoua scaly papules on the trunk and extremities, velvety black brownish colored patchea on the neck and both axillary regions.
Acanthosis Nigricans
;
Adolescent
;
Arm
;
Extremities
;
Humans
;
Incidence
;
Male
;
Neck
;
Pigmentation
;
Pityriasis Lichenoides
;
Pityriasis*
;
Puberty
;
Thigh
3.A Study on industrial Accidents of Workers in Jeonbug Areas.
In Dam HWANG ; Young Soo PARK ; Suk Kwon SUH
Korean Journal of Preventive Medicine 1981;14(1):89-96
Of 2,740 industries in Jeonbug area which are covered by industrial insurance policy, 462 facilities which the accidents related to industry occurred during the year of 1979 were studied, and the results are summarized as follows; 1. The accidents related to industry occurred in 462 industries of the total 2,740 industrial facilities in Jeonbug area as of 1979. 2. The incidence rate accident per 1,000 workers was 34.3(49.2 in male workers and 12.8% in female workers), the frequency rate of the total industries in Jeonbug area was 13.36, and severity rate was 1.3. 3. The frequency rates and severity rates by type of industry in study area were quit different to compare with those of national rates. 4. The incidence rate of construction industry was 223.6 per 1,000 workers, and that of transportation-communication industries were 78.6. 5. The proportion of industrial accidents of 20-24 age group was 22.1 percent of the total accidents, and the proportions decreased according to age increase. 6. The incidence rate in the industry having less than 49 workers was 20.6 per 1,000 workers, that of industry with 50-99% workers was 26.7, that of industry with100-199 was 51.9, that of industry with 200-499 was 80.2 and that of with more than 500 workers was 40.7. 7. The accidents which occurred in the workers with experience of less than one year was 69.4 percent of the total accidents, otherwise, the longer the workers have worked the less accident they have. 8.The most accidents occurred in the shift between 10 to12 o'clock, and 16 to 18 hour. 9. The primary causes of the industrial accidents were found to be collisions, machinery, falling objects and falls. 10. The site of injury by type of industry were quit different, and the major site of injury was finger. 11. The laceration and open injuries of the accidents related to industry were 37.2 percent of the total ceases, and fractures or dislocations were 28.5 percent, and contusions were 6.5% percent. 12. Death rate of industrial accident was 5.0 per 1,000 workers, and those of industry were 47.6 in transportation, 42.8 in construction industry, 24.4 in mine industry, and 2.0 in manufacturing industry.
Accidents, Occupational*
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Construction Industry
;
Contusions
;
Dislocations
;
Female
;
Fingers
;
Humans
;
Incidence
;
Insurance
;
Jeollabuk-do*
;
Lacerations
;
Male
;
Mortality
;
Transportation
4.Weightlessness-simulated Experimental Apparatus: Hindlimb Unloading Model in Rat-Technical Aspects.
Sang Ho HWANG ; Chan Kwon JUNG
Korean Journal of Aerospace and Environmental Medicine 2005;15(2):52-55
No abstract available.
Animals
;
Hindlimb Suspension*
;
Hindlimb*
5.Usefulness of Three - Dimensional CT Angiography as a Confirmatory Diagnostic Test for Scalp Pseudoaneurysms.
Soon Kwon KIM ; Sun Chul HWANG ; Bum Tae KIM
Korean Journal of Cerebrovascular Surgery 2010;12(2):87-90
OBJECTIVE: We report here on two cases of pseudoaneurysms that were diagnosed using computed tomographic angiography (CTA), with one arising in the superficial temporal artery and the other arising in the occipital artery. METHODS: Case 1: A 29-year-old man presented with a slow growing, pulsatile mass on the left side of his forehead following a blow from a fist 10 days earlier. CTA revealed an 11 x 8 x 11-mm oval pseudoaneurysm arising from the frontal branch of the left superficial temporal artery. Case 2 : A 36-year-old man presented with a pulsatile mass in the right suboccipital region that had been present for the past year. He had no history of direct trauma. CTA revealed a 15 x 8 x 13-mm oval dye-filled sac arising from the right occipital artery. RESULTS: Based on the CTA images, the parent arteries were exposed and ligated proximally and distally to the pseudoaneurysms and then they were completely excised. CONCLUSION: CTA is a minimally invasive technique for making the diagnosis of scalp pseudoaneurysms and CTA is also useful for the preoperative planning.
Adult
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Aneurysm, False
;
Angiography
;
Arteries
;
Diagnostic Tests, Routine
;
Forehead
;
Humans
;
Parents
;
Scalp
;
Temporal Arteries
6.A study on the preorthodontic prediction values versus the actual postorthodontic values in Class III surgery patients.
Chung Ju HWANG ; Hee Jeong KWON
Korean Journal of Orthodontics 2003;33(1):1-9
The purpose of this study was to find out and evaluate discrepancies between preorthodontic prediction values and actual postorthodontic values and factors contributing to it in 45 patients(17 male, 28 female) who were diagnosed as skeletal Class III malocclusion and received presurgical orthodontic treatment and orthognathic surgery at Yonsei university dental hospital. Lateral cephalograms were analyzed at pretreatment(T1), orthodontic prediction(T2), immediately before surgery(T3) and designated the landmark as coordinates of X and Y axes. The samples were divided according to ALD, upper and lower incisor inclination(U1 to SN, IMPA), COS, extraction, the position of extracted teeth and the statistical significance was tested to find out the factors contributing to the prediction. The results were as follows : 1. Differences between preorthodontic prediction values and actual postorthodontic values(T2-T3) were statistically significant(p<0.05) in the x coordinates of U6mbc, L1x and in y coordinates of U1i, U1x, U6me, U6mbc, L6mbc 2. The accuracy of prediction is relatively higher in horizontal changes compared to vertical changes. 3. The statistical significance(p<0.05) between prediction and actual values is observed more in the landmarks of the maxilla than the mandible. 4. Differences between prediction and actual values of incisor and first molar were statistically significant(p<0.05) according to extraction vs non-extraction, extraction type, ALD in the maxilla and according to ALD, IMPA in the mandible. Discrepancies between preorthodontic prediction values and actual postorthodontic values and factors contributing to the prediction must be considered in treatment planning of Cl III surgical patients to increase the accuracy of prediction. Furthermore future investigations are needed on the prediction of vertical changes.
Humans
;
Incisor
;
Male
;
Malocclusion
;
Mandible
;
Maxilla
;
Molar
;
Orthognathic Surgery
;
Tooth
7.Endovascular Embolization of a Ruptured Distal Lenticulostriate Artery Aneurysm in Patients with Moyamoya Disease.
Kihwan HWANG ; Gyojun HWANG ; O Ki KWON
Journal of Korean Neurosurgical Society 2014;56(6):492-495
A ruptured distal lenticulostriate artery (LSA) aneurysm is detected occasionally in moyamoya disease (MMD) patients presented with intracerebral hemorrhage. If the aneurysm is detected in hemorrhage site on angiographic evaluation, its obliteration could be considered, because it rebleeds frequently, and is associated with poorer outcome and mortality in MMD related hemorrhage. In this case report, the authors present two MMD cases with ruptured distal LSA aneurysm treated by endovascular embolization.
Aneurysm*
;
Arteries*
;
Cerebral Hemorrhage
;
Embolization, Therapeutic
;
Hemorrhage
;
Humans
;
Mortality
;
Moyamoya Disease*
8.Level of Emergency Medical care Required in Religious Mass Gathering.
Kwan Mo YANG ; Tae Wook KWON ; Du Young HWANG ; Hwan LEE ; Joo Il HWANG ; Se Kyung KIM
Journal of the Korean Society of Emergency Medicine 1997;8(2):179-184
STUDY OBJECTIVE: determine the level of medical care required for mass gatherings and describe the types of medical problems encountered in a religious mass gathered ceremony. DESIGN: Standard charts and a four-tiered triage system(minor, moderate, urgent, and emergent) were developed before the event. The triage system was applied to each chart retrospectively by a single emergency physician. SETTING: Medical staff(10 physicians,13 nurses,1 pharmacist, and 54 first-aid attendants) were based in 8 advanced life support (ALS) clinics. INTERVENTIONS: First-aid attendants referred patients to the clinics, where nurses conducted initial assessments and referred patients to physicians at the venue. Three ambulances were stationed at the venues. RESULT: 22 trauma patients were developed and 183 medical complaints were encountered. Only 7 urgent medical problems were encountered.
Ambulances
;
Emergencies*
;
Humans
;
Pharmacists
;
Retrospective Studies
;
Triage
9.Two cases of Edward syndrome.
Jin Bok HWANG ; Woo Hyun KWON ; Soon Young SONG ; Chang Ho HAN ; Hye Li CHUNG ; Young Dae KWON
Journal of the Korean Pediatric Society 1991;34(2):250-255
No abstract available.