1.Development and Clinical Use of Digital Image Chart.
Journal of the Korean Medical Association 1998;41(11):1152-1158
No abstract available.
2.A Cse of Partial Trisomy 10q Syndrome.
Yong Chan PARK ; Ahn Hong CHOI ; Jin Young HAN
Korean Journal of Perinatology 1998;9(4):421-424
Partial trisomy 10q syndrome is a rare chromosome anomaly characterized by severe mental and growth retardation, craniofacial dysmorphia with prominent forehead, fine arched eyebrows, deep set small eyes and micrognathia, In addition, other physical manifestations have been reported as skeletal anomaly, congenital heart disease, inguinal hernia, and so on. We report a case of partial trisomy 10q syndrorne with certain stigmata which confirmed by chromosome analysis.
Christianity
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Eyebrows
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Forehead
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Heart Defects, Congenital
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Hernia, Inguinal
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Trisomy*
3.Spirometry, a useful method for detecting upper airway tumor.
Hojoong KIM ; Jhingook KIM ; Kyung Soo LEE ; Yong Chan AHN
Korean Journal of Medicine 2002;62(1):114-115
No abstract available.
Spirometry*
5.Medullary Carcinoma of Thyroid Gland with Co-existing Papillary Carcinoma.
Jeong Hee AHN ; So Yong JIN ; Ho Guen KIM ; Chan Il PARK
Korean Journal of Pathology 1988;22(4):443-447
We report a medullary carcinoma of the thyroid gland with a coexisting occult sclerosing papillary carcinoma. This rare case, in that the two types of carcinoma are completely separated and not intermixed together, is different from the previously reported mixed follicular and parafollicular cell carcinomas of the thyroid gland, so-called "differentiated thyroid carcinoma, intermediate type". The two separate tumors of the present case are undoubtedly of coincidental double primaries, and it can be a assumed that at least some of the mixed follicular and parafollicular cell carcinomas are results of collision of carcinomas derived from two embryogenetically different cell types.
6.Gottron's Acrogeria Syndrome: a case report.
Byung Woo AHN ; Sang Youp LEE ; Chong Kwan KIM ; Chan Hyup PARK ; Yong Hi CHUNG
The Journal of the Korean Orthopaedic Association 1997;32(5):1380-1386
Gottron's acrogeria syndrome is a rare genetic disease of unknown etiology with some features suggestive of accelerated aging. The typical clinical presentation consists of premature aging of the skin with atrophy of the cutis and the subcutis. After a brief review of the literature available on this syndrome, we report a case of Gottron s acrogeria syndrome in a 19 year-old man whose right rectus femoris muscle had a fibrotic contracture.
Aging
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Aging, Premature
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Atrophy
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Contracture
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Humans
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Quadriceps Muscle
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Skin
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Young Adult
9.Radiotherapy for Malignant Lymphoma of Orbit and Ocular Adnexa.
Jun Young JI ; Yong Chan AHN ; Yoon Duck KIM
Journal of the Korean Ophthalmological Society 2005;46(2):201-214
PURPOSE: To investigate the clinical features of orbital and ocular adnexal malignant lymphoma and the effectiveness of radiotherapy for its treatment. METHODS: We retrospectively reviewed the medical records of 54 eyes in 44 patients who were diagnosed with orbital and ocular adnexal malignant lymphoma and who underwent radiotherapy. RESULTS: The main symptoms of malignant lymphoma patients were conjunctival mass, lid mass, lid swelling, and exophthalmos. Histopathologically, MALT-lymphoma was the most common in 39 patients (88.6%). In all 54 eyes of the 44 patients, the mass either decreased or disappeared completely after radiotherapy. The mean follow-up period was 31 months, ranging from 4 to 68 months. There was no recurrence of malignant lymphoma in the orbit or ocular adnexa during this period. However, there were three cases where the tumor recurred in other systemic organs. Complications of radiotherapy included mild punctate epithelial erosion, xerophthalmia, cataract, and retinopathy. CONCLUSIONS: Localized radiotherapy is an effective and safe way to treat malignant lymphoma of the orbit and the ocular adnexa. In order to decrease complications, the use of lens shielding and optimized radiation amount should be considered.
Cataract
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Exophthalmos
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Follow-Up Studies
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Humans
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Lymphoma*
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Medical Records
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Orbit*
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Radiotherapy*
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Recurrence
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Retrospective Studies
;
Xerophthalmia
10.Clinical Application of Wedge Factor.
Dong Rak CHOI ; Yong Chan AHN ; Seung Jae HUH
Journal of the Korean Society for Therapeutic Radiology 1995;13(3):291-296
PURPOSE: In general. The wedge factors which are used clinical practives are ignored of dependency on field sizes and depths. In this present, we investigated systematically the depth and field size dependency to determine the absorbed dose more accurately. METHODS: The wedge factors for each wedge filter were measured at various depth (depth of Dmax, 5cm, 10cm, and 15cm) and field sizes (5 X 5cm, 10 X 10cm, 15 X 15cm, 20 X 20 cm) by using 4-,6-, and 10-MV X rays. By convention, wedge factors are determined by taking the ratio of the central axis ionization readings when the wedge filter is in place to those of the open field in same field size and measurement depth. In this present work, we determined the wedge factors for 4-, 6-, and 10-MV X rays from Clinac 600C and 2100C linear accelerators (manufactured by Varian Associates, Inc., Palo Alto, CA). To confirm that the wedge was centered., measurements were done with the two possible wedge position and various collimator orientations. RESULTS: The standard deviations of measured values are within 0.3% and the depth dependence of wedge factor is greater for the lower energies. Especially, the variation of wedge factor is no less than 5% for 4- and 6- MV X rays with more than 45degree wedge filter. But there seems to be a small dependence on field size. CONCLUSION: The results of this study show a dependence on the point of measurement. There also seems to be a small dependence on field size. And so, we should consider the depth and field size dependence in determining the wedge factors. If one wedge factor were to be used for each wedge filter, it seems that the measurement for a 10cm X 10cm field size at a depth of 10cm would be a reasonable choice.
Axis, Cervical Vertebra
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Fibrinogen
;
Particle Accelerators
;
Reading