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수장 . 족저부의 표피낭종 - 임상 및 조직학적 연구 -
한광호,문상은,조광현 ( Kwang Ho Han,Sang Eun Moon,Kwang Hyun Cho ) 대한피부과학회 1997 大韓皮膚科學會誌 Vol.35 No.3
Background: Although palmoplantar epidermal cysts have long been associated with develop ment following implantation of an epidermal fragment as a result of a penetrating or blunt injury, the pathogenic mechanism is still not fully understood. Since 1987, many cases have been reported in which human papillomavirus(HPV) could be associated with palmoplantar epidermal cysts. Objective : In this study, we evaluated the clinicopathological findings of palmoplantar epidermal cysts and investigated them for the presence of HPV in order to examine the role of HPV in the pathogenesis of this disorder in Korea. Methods : The clinical, histological, immunohistochemical studies were performed on seven cases of plantar cysts, and two cases of palmar cysts. Results : No previous trauma history was seen. Histopathologically, parakeratotic nuclei, or vacuolar strutures within the keratinous mass in the cyst cavity were found. However, we could not find intracytoplasirnic eosinophilic bodies in the wall, the cyst content, or the overlying epidermis. The dyskeratotic keratinocytes were observed in 3 cases. Papillomavirus common antigens were not detected by immunohissochemical staining. Conclusions . Palmoplantar epidermal cysts in Korea have some different histological features compared to those of HPV 60-associated cases in Japan and we could not detect the immunohistochemical evidence of HPV infection in our cases. (Kor J Dermatol 1997;35(3): 507-513)
전재헌 ( Jae Hun Jun ),이석종 ( Seok Jong Lee ),장용현 ( Yong Hyun Jang ),이원주 ( Weon Ju Lee ),김도원 ( Do Won Kim ),이재혁 ( Jae Hyuck Lee ) 대한피부과학회 2011 大韓皮膚科學會誌 Vol.49 No.8
Background: Epidermal cysts seldom arise on the palm or sole because of the absence of pilosebaceous apparatus in palmoplantar skin. Palmoplantar epidermal cysts (PPECs) are not included in this location`s tumor category, because they appear as slightly elevated, hardly movable dermal or subcutaneous nodules without a central punctum, unlike other epidermal cysts. As a result, PPECs often mimic corns, calluses, or verruca. Objective: The purpose of this study was to review the clinical features of PPECs and to explore the usefulness of ultrasonography as a diagnostic tool. Methods: We retrospectively reviewed the medical records and ultrasonographic findings of 31 patients with PPECs among 341 patients with a confirmed epidermal cyst. Among them, 12 patients were evaluated preoperatively by ultrasonography. The data were compared between the ultrasonographic diagnosis and the final diagnosis. Results: Unlike previous reports, PPECs were relatively common, and comprised 9.1% (31/341) of all epidermal cysts. They also appeared more on the sole than on the palm. In addition, PPECs were confused with corns, calluses, and other benign tumors at the first visit, because of their different clinical features from ordinary epidermal cysts. However, preoperative ultrasonography of 12 cases enabled us to make a correct diagnosis. After the operation, no recurrence was found at the last follow-up in any of the patients. Conclusion: PPECs have some different clinical features compared to typical epidermal cysts with a non-palmoplantar location. Therefore, it is often difficult to distinguish PPECs from other benign tumorous conditions. However, ultrasonography was useful for the preoperative diagnosis of PPECs because of its safety, low cost, non-invasiveness and, most importantly, its accuracy. (Korean J Dermatol 2011;49(8):707∼713)