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이호균(Ho Gyun Lee),이애영(Ai Young Lee),이유신(Yoo Shin Lee) 대한피부과학회 1990 대한피부과학회지 Vol.28 No.4
Aquagenic urticaria is a rare form of physical urticaria in which wheal is produced by contact with water. A 21-year-old woman was referred to our department because of itching wheal after contact with water for 1 month. Match-head-sized wheal surrounded by bean sized erythema was provoked with water on her face regardless of its tempera ture, osmolarity and quality. Passive transfer test was negative. Result of pro vocation test with normal saline and NaHCO solution, which was reported to be therapeutically effective, was similar to those with pure water. (Kor J Dermatol 28(4): 456 458, 1990)
이호형(Ho Hyoung Lee),김종대(Jong Dae Kim),장은철(Eun Cheol Jang),손은식(Eun Sik Sohn),임희택(Hee Taek Lim),이춘보(Chun Bo Lee),신승권(Seung Kwan Shin) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.9
Chorioangioma is the most common benign tumor of the placenta, which consists of a benign angioma arising from the primitive chorionic mesenchyme. The incidence is reported to be 1% in most large series where systemic section of placentas revealed small tumors. However, the incidence of large chorioangioma varies from 1 in 500 to 1 in 16,000 placentas examined.Most placental chorioangiomas have no clinical significance. However, the uncommon large tumors, particularly those greater than 5cm in diameter may be associated with maternal or fetal complications. For diagnosis of these lesions, the ultrasonography was used. If the chorioangioma is suspected, color doppler study is informative to confirm the presence of the vascular channels. We describe a recent case of chorioangioma and discuss the noxious effects of this benign tumor on the mother and the fetus.
이호균(Ho Gyun Lee),조광현(Kwang Hyun Cho),이유신(Yoo Shin Lee),함의근(Eui Keun Ham),송계용(Kye Young Song),김원석(Won Suk Kim) 대한피부과학회 1990 대한피부과학회지 Vol.28 No.5
We report a case of clear cell acanthoma occurred in a 61 year old man. He developed a brownish bean sized nodule on the left chest 3 years ago. The skin lesion has slowly increased in size without any subjective symptoms. Histopathologic examination revealed proliferation of clear cells within a sharply demarcated area of the epidermis. The presence of numerous neutrophils throughout the epidermis were also noted. (Kor J Dermatol 28(5): 642-645, 1990)
이호균(Ho Gyun Lee),조광현(Kwang Hyun Cho),이유신(Yoo Shin Lee),김원석(Won Seok Kim),함의근(Eui Keun Ham),송계용(Kye Yong Song) 대한피부과학회 1990 대한피부과학회지 Vol.28 No.6
We reported a case of nevus sebaceus associated with trichilemmoma in a 19-year- old female patient. The lesion was a 2 x 2 cm sized yellowish verrucous plaque with two 0.3 x 0.3 cm sized dome-shaped papules. Histopathological examinat,ion revealed hyperkeratosis, papillomatosis and acanthosis, proliferation of sebaceus glands, presence of apocrine gland and mild inflammatory cellular infiltration around superficial vessels. In the epidermis of the lesion, there were two foci of lobulated mass consisted of clear cells with columnar basal cells and thick basement membrane. (Kor J Dermatol 28(6):818 821, 1990)
이호균,박경섭,최수진나,김신곤,정상영,Lee, Ho-Kyun,Park, Kyung-Sub,Choi, Soo-Jin-Na,Kim, Shin-Kon,Chung, Sang-Young 대한소아외과학회 2003 소아외과 Vol.9 No.2
The teratoma is a unique complex neoplasm and is one of the most frequent pediatric tumors originated from the extragonadal germ cells. Mature teratoma is composed of mature differentiated tissues, while immature teratoma always contains embryonic tissues of variable degrees of immaturity, especially in the neuroepithelial elements. Diagnosis of teratoma is relatively easy by conventional radiologic study, but the immaturity can be identified only by histopathological examination. Between January 1993 to December 2002, 63 cases of teratoma were operated and analysed retrospectively at the Chonnam University Hospital Female to male ratio was about 3:1 and age distribution was relatively even. Among 63 cases, gonadal teratoma was the most common (52.4%), followed by sacrococcygeal (25.4%), retroperitoneal (9.5%) and mediastinal teratoma (9.5%). Fifty-six cases were mature teratomas and seven were immature teratomas. Alpha-fetoprotein (AFP) was elevated in 4 of 6 immature cases, but in 2 of 51 mature ones Elevated AFP progressively returned to normal range by 1 month after operation in all. Complete excision of the mass was performed, and major complication was not noticed. In five immature cases, PEB chemotherapy (Cisplatin, Etoposide, Bleomycin) was performed. Two of 2 cases in histological grade II were well tolerated to the aggressive chemotherapy. One of three cases in grade III expired due to severe bone marrow depression, and two of them expired by tumor recurrences. In conclusion, immature teratoma in histological grade III showed high potentiality of recurrence. Therefore, postoperative chemotherapy has to be applied to the high graded immature tumors.
태양전지급 폴리실리콘 성형체 제작을 위한 CIP법의 활용
이호문(Lee, Ho-Moon),신제식(Shin, Je-Sik),문병문(Moon, Byung-Moon),권기환(Kwon, Ki-Hwan),김기영(Kim, Ki-Young) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.06
In this study, it was aimed to develop the re-use technology of ultra-fine silicon powders, by-products during the current production process of high purity poly-Si feedstock. For this goal, the compacts of the silicon powders were tried to fabricate by CIP (Cold Isostatic Pressing) method using silicon rubber mold without chemical binder materials. The density ratio of the silicon powder compacts reached 74%. In order to simulate the actual handling and charging conditions of feedstock material in casting process, a shaking test was carried out and mass loss measured. Finally, the silicon powder compacts were melted using a cold crucible induction melting method and the purity assessment was conducted by Hall effect measurement.
이호권 ( Ho Gwon Lee ),민슬기 ( Seul Ki Min ),공승진 ( Seung Jin Kong ),이수정 ( Su Jung Lee ),송헌호 ( Hun Ho Song ),윤종우 ( Jong Woo Yoon ),이명구 ( Myung Goo Lee ),신동훈 ( Dong Hoon Shin ),강성하 ( Sung Ha Kang ),이정열 ( Jeo 대한내과학회 2005 대한내과학회지 Vol.69 No.2
Background : Tsutsugamushi disease is an acute febrile disease in Korea. Some patients with tsutsugamushi disease have severe illness, which needs care in intensive care unit, and may die due to the disease. We analyzed the cases with tsutsugamushi disease who lived in Chuncheon and neighboring communities to find out clinical manifestations, laboratory findings especially in severe cases. Methods : We reviewed the clinical records of the 81 cases who were diagnosed as tsutsugamushi in Chuncheon Sacred Heart Hospital from April, 1997 to December, 2002. We analyzed the clinical and laboratory findings of the 81 cases, and the treatment results of 79 cases who recieved the treatment in this hospital. We also compared the characteristics of the patients between admission to general ward and intensive care unit (ICU). Results : Seventy three cases developed the disease in autumn. Seventy cases had fever. 58 cases had eschar in their bodies. With the doxycycline treatment, forty five cases subsided the fever within 48 hours, but in 13 cases, fever continued after 5 days of treatment. Twenty five cases were admitted to ICU, 8 cases among them were treated with ventilator, 3 cases died due to the multi-organ failure. When we compared the clinical characteristics of the patients admitted to ICU with those to general wards, leukocyte count, the level of BUN and creatinine were higher, the albumin level was lower in ICU patients than those of general ward patients. Conclusion : Tsutsugamushi disease can progress to severe disease, and be fatal to the patients. So it is necessary to diagnose early and treat carefully. We suggest that leukocyte count, BUN, creatinine, or albumin can be used to predict the prognosis.(Korean J Med 69:190-196, 2005)