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송병한 ( Byong Han Song ),조은별 ( Eun Byul Cho ),박은주 ( Eun Joo Park ),권인호 ( In Ho Kwon ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2012 대한피부과학회지 Vol.50 No.3
Balloon cell melanoma, an uncommon histopathological variant of malignant melanoma, was first described by Gardner and Vazquez in 1970. This condition is histopathologically characterized by the presence of balloon cells with varying sizes and atypical nuclei. An 84-year-old woman presented with a solitary, dome-shaped, walnut-sized, brownish nodule on the posterior aspect of the left ear with bleeding, having only detected the nodule 2 weeks prior. Histopathologically, the lobulated tumor mass revealed copious melanin pigment and many balloon cells with clear cytoplasm, atypical nuclei, and variable size. Immunohistochemically, the tumor mass showed positive reaction to S-100 protein and HMB 45 staining. We herein report a typical case of balloon cell melanoma, which developed primarily on the skin. (Korean J Dermatol 2012;50(3):252~254)
송병한 ( Byong Han Song ),김병철 ( Byung Chul Kim ),박은주 ( Eun Joo Park ),권인호 ( In Ho Kwon ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2011 대한피부과학회지 Vol.49 No.12
Milia are small, superficial keratin cysts believed to be derived from the pilosebaceous follicle, which arise most commonly on the cheeks and eyelids. We report a case of milium occurring on the glans penis in a 18-year-old man, who had a solitary dome-shaped, 2×2 mm sized, yellowish papule. The histopathological examination showed a small keratin-filled, intradermal cyst. The cyst was lined by a stratified epithelium that was a few cell layers thick. This is the first case report in the Korean dermatological literature of milium occurring on the glans penis without coexistence of other dermatoses. (Korean J Dermatol 2011;49(12):1122~1124)
송병한 ( Byong Han Song ),윤성환 ( Sung Hwan Youn ),박은주 ( Eun Joo Park ),권인호 ( In Ho Kwon ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2011 대한피부과학회지 Vol.49 No.9
Pilonidal sinus is one of a follicular occlusion tetrad, and is a chronic inflammatory disease that is associated with hair; a midline hairy patch or pit in the sacral region with a sinus orifice in the bottom, or a cyst beneath it, in which hair is growing. The exact pathogenesis of pilonidal sinus remains unknown, but hair insertion may be the essential cause of the disease. It is usually treated by radical excision, marsupialization or incision and curettage. However, these surgical options often lead to a high recurrence rate, especially for hirsute patients. Wide excision and simple primary closure of the pilonidal sinus is an easy, simple method and the recurrence rate is low. We report here the case of an 18-year-old male patient with recurrent pilonidal sinus mimicking inflammatory epidermal cyst. The pilonidal sinus was treated by wide excision and primary closure. (Korean J Dermatol 2011;49(9):856~858)
피부섬유종과 융기성 피부섬유육종의 임상 및 병리조직학적 비교 고찰
송병한 ( Byong Han Song ),박은주 ( Eun Joo Park ),권인호 ( In Ho Kwon ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2012 大韓皮膚科學會誌 Vol.50 No.6
Background: The histologic distinction of dermatofibrosarcoma protuberans (DFSP) and dermatofibroma (DF) may be difficult, especially in the case of DF extending into the subcutaneous fat. CD34 and Factor XIIIa stains are commonly used in distinguishing the DF from DFSP, but is not always helpful. There are no studies regarding the clinicopathologic comparison of DF and DFSP. Objective: The aim of our study was to evaluate the clinicopathologic characteristics and differences between the DF and DFSP. Methods: Retrospective analysis was performed by reviewing the clinicopatholgic records of 40 patients who were diagnosed with DF, and 11 patients who were diagnosed with DFSP, from 1998 to 2012 in Hallym University Medical Center. Results: The ratio of male to female patients in DF and DFSP were 1:2.1 and 1:1.8, respectively. Disease onset ages were 32.6 years and 34.4 years, respectively. The average size was 0.8 cm and 2.0 cm, respectively. The most frequent location was the lower extremity and the trunk, respectively. No symptom was most common subjective symptom in both DF and DFSP. Most of DF presented as brown colored papules and the lesions of DFSP were reported mainly as brown plaques. Histopathologically, the 40 cases of DF were classified as 24 fibrous types, 12 cellular types and 4 aneurysmal types. Of the 11 DFSP, two cases were classified as myxoid type, one case as pigmented lesion (Bednar tumors) and one case as fibrosarcomatous type. Histopathologic findings of the DF showed more significant epidermal hyperplasia, basal hyperpigmentation and collagen trapping, compared to that of the DFSP. The subcutaneous extension and honeycomb pattern were significantly more present in DFSP than in DF. The immunoreactivity of CD34 in DFSP was generally strong and diffuse, in contrast to absent or focal staining seen in DF. Conclusion: We conclude that several cilinicopathologic features, including size, location, epidermal and tumoral component, and immunostaining, for CD34 can be used to distinguish DF from DFSP. Further research regarding the characteristics and differences between DF and DFSP should be performed on larger number of cases.
조은별 ( Eun Byul Cho ),송병한 ( Byong Han Song ),박은주 ( Eun Joo Park ),권인호 ( In Ho Kwon ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2012 대한피부과학회지 Vol.50 No.7
Fluoroscopy-induced chronic radiation dermatitis (FICRD) is a cutaneous disorder that results from prolonged exposure to ionizing radiation during interventional procedures. With the expanded use of interventional procedures, there is increased fluoroscopic exposure. However, diagnosis and treatment of such disorder remain difficult. Herein, we report on a case of FICRD that occurred in the right subscapular area. (Korean J Dermatol 2012;50(7):614∼ 617)
윤종현 ( Jong Hyun Yoon ),송병한 ( Byong Han Song ),박은주 ( Eun Joo Park ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2013 대한피부과학회지 Vol.51 No.11
Plantar vein thrombosis is a rare condition, which can cause foot pain when walking. The cause of thrombosis is not clear. We experienced a case of plantar digital vein thrombosis which occurred in the left big toe. The patient was a 35-year-old man who presented with foot pain when during walking since one month ago. There was a solitary skin colored nodule on the left big toe. Skin punch biopsy was performed, and the diagnosis of plantar digital vein thrombosis was made. Plantar digital vein thrombosis is a very rare cause of toe pain. We herein report this interesting case. (Korean J Dermatol 2013;51(11):898∼900)
김병철 ( Byung Chul Kim ),송병한 ( Byong Han Song ),박은주 ( Eun Joo Park ),권인호 ( In Ho Kwon ),김광호 ( Kwang Ho Kim ),김광중 ( Kwang Joong Kim ) 대한피부과학회 2012 大韓皮膚科學會誌 Vol.50 No.2
Trichoblastoma is a rare, benign skin tumor of adnexal origin that differentiates toward the hair germ, the embryonic precursor of a hair follicle. Clinically, it presents as a slow growing, solitary, well-circumscribed nodule located predominantly in the head and neck area, with a predilection for the scalp. The trunk, proximal extremities and perianal and genital regions may also be affected. We herein present a case of trichoblastoma which occurred on the trunk as a solitary subcutaneous mass with a central tiny pore in 53-year-old man. (Korean J Dermatol 2012; 50(2):179~181)