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김일환,박재홍,정중태 대한피부과학회 2001 大韓皮膚科學會誌 Vol.39 No.11
Cutis verticis gyrata(CVG) is a descriptive term for a condition of the scalp in which deep furrows and convolutions are seen that resemble the outer surface of the cerebrum. The possible etiologies may be categorized as primary essential, primary nonessential, and secondary cutis verticis gyrata. This is based on history, physical examination, and histologic criteria with or without laboratory examinations. Herein we reported a case of primary essential cutis verticis gyrata with no associated disorders.
김일환,이호섭,오칠환,정중태 대한피부과학회 2002 大韓皮膚科學會誌 Vol.40 No.3
Erythema ab igne is a reticulated erythematous hyperpigmented eruption that occurs after chronic exposure to heat. Reducing or eliminating contact with the sources of heat in the early stages of the disorder may allow the hyperpigmentation to fade. Longer exposure, however, results in permanent hyperpigmentation and dysplastic change, upon which squamous cell carcinoma may arise. Herein we report two cases of erythema ab igne which are showing dysplastic change.
서수홍(Soo Hong Seo),정중태(Jeung Tae Jeong),계영철(Young Chul Kye),김수남(Soo Nam Kim) 대한피부과학회 2001 대한피부과학회지 Vol.39 No.11
N/A Background: Pilomatricoma is a cystic neoplasm with differentiation toward hair cortex cells, Although it is characterized by several features such as cellular constitiuents, stromal change and inflammation, it is difficult to interpret the histopathogenesis of the lesions, and there is no comprehensive understandimg about the evolution of the tumor. Object: The purpose of this study was to characterize the clinical and histopathologic feature of pilomatricoma and to suggest the growth pattern and evolutional stage of this tumor. Method: Thirty-eight cases with pilomatricoma in 34 patients who had visited Korea University Hospital during the last 10 years have been collected. We studied the clinical and histopathological characteristics of the cases and tried to classify evolutional stages of them and to elucidate the growth pattern. Results: Most of the ors were solitary lesions except four patients, who showed two lesions simultaneously. The male to female ratio was 1:1.1. The average age was 16.25 years (9rnanths to 43 years) and 35 cases(92%) were developed in the patients younger than 30 years old. The predilection sites were arm(61%), face(1S.2%), neck(13%), thigh(5.2%), shoulder(2.6%) in order. The duration of lesions was from 10 days to 3 years in known cases, with mean duration of 9,8mceths. Histopathologically tumor size was from 0.3cm to 1.9cm in diameter, with average value of 6.89cm. 29 cases showed inflammatory reaction variably in its severity involving giant cells. Calcification was observed in 22 cases and two of them showed ossification. According to four stage system of previous study, we categorized our cases into the 3 early stage, 8 fully developed stage, 15 early regressive stage, and 12 late regressive stage. Peripheral basaloid epithelium surrounding the tumor wais found in 17 cases. 3 cases were surrounded by epithelium perfectly, and 5cases were surrounded by half or more. Conclusion: Pilomatricoma is not a cyst but a cystic neoplasm that consists principally of rapidly growing basaloid cells that form well-defined lobular aggregations of diverse sizes and shapes. It shows variable features with differentiation. Since previous four staging system were not clearly differentiated in each stage, we divided pilomatricoma into three phases, developing , proliferative phase and regressive phase, according to the constituents of basaloid cells in the periphery.