• Archives of Plastic Surgery
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• 제34권6호
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• pp.803-806
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• 2007

Purpose: The epidermal cyst is a very common skin lesion which usually occurs in the hairy regions. They are generally small but rarely reach more than 5 cm in diameter. We present a patient with a giant epidermal cyst on buttock area. Methods: A 50-year-old man with a slowly enlarging, huge mass in his left buttock was examined. There was no history of trauma in this area. Physical examination revealed a soft, nontender, $15{\times}15cm$-sized mass in his left buttock. T1-weighted magnetic resonance images demonstrated a well-circumscribed, multilocular cystic lesion with homogeneous, slightly high signal intensity. On T2-weighted images the lesion had wide areas of high signal intensity. The mass was totally excised. Results: A histopathological finding revealed that the cystic wall was lined with whole layers of stratified squamous epithelium. Keratin layers from the surface of the epithelium were seen to be sloughing into the cystic lumen. Multinucleted giant cells were found outside the cystic wall. Conclusion: Herein we report a rare case of giant epidermal cyst occurring on the buttock.

• 대한두개안면성형외과학회지
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• 제17권4호
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• pp.222-224
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• 2016

Epidermal cysts are intradermal or subcutaneous cystic tumors that frequently occur in the face, scalp, neck, and body trunk. Acquired cases of epidermal cyst commonly occur as a result of various surgical operations, chronic irritation, or trauma, all of which may trigger the occurrence of the invagination of squamous epithelium. A 57-year-old man presented with a palpable mass $7cm{\times}2cm$ in size in the upper lip. The patient had a 3-year history of wearing a denture to restore missing bilateral maxillary central and lateral incisors, accompanied by inflammatory findings on the buccal mucosa due to chronic lip irritation. The resected oval-shaped cyst had a size of $5.5cm{\times}3.0cm{\times}2.5cm$, and it was an encapsulated mass with a well-defined margin. The histopathology was typical of epidermal cyst. This case of a rare giant upper lip epidermal cyst in a patient wearing a denture may be of interest to clinicians.

• 한국임상수의학회지
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• 제26권6호
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• pp.616-618
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• 2009

5세령의 페키니즈 견이 발생된 지 1년 된 등쪽 종괴의 평가를 위해 내원하였다. 종괴의 세침흡인 도말 표본의 세포학 검사에서 많은 수의 각화 상피세포와 거대 다핵 세포, 소수의 방추 세포가 관찰되었다. 세포학 검사결과 육아종성 표피낭 또는 모낭 종양이 의심되었고, 결절은 외과적으로 절제한 후 병리조직학적 검사를 실시하였다. 피하의 결절은 부분적으로 결합조직에 둘러싸여 있었으며, 주변조직과 경계가 명확하였다. 그 결절은 중심의 큰 낭과 주변의 작은 낭으로 이루어져 있었으며, 그 낭은 중심부에 층판상의 케라틴이 존재하였고 단층 또는 중층의 기저세포와 편평 상피세포로 둘러싸여 있었다. 다소성으로 다수의 대식구와 소수의 다핵거대세포가 관찰되었다. 이에 기초하여 육아종성 염증이 동반된 keratoacanthoma로 진단하였다. 종괴는 수술 제거 후 재발되지 않고 있다.

• 대한족부족관절학회지
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• 제14권2호
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• pp.169-172
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• 2010

Purpose: The authors have experienced various lesions that simulate ganglion of the foot on the ultrasonography. The purpose of this study is to evaluate ultrasonographic findings of soft tissue lesions, which were interpreted as ganglion but confirmed as different lesions in the foot. Materials and Methods: We reviewed a database of patients with ganglion on the ultrasonography from two different institutions. There were 109 patients who underwent both ultrasonography and surgical confirmation. Twenty one lesions were identified, of which initial interpretation on the ultrasonography included ganglion which pathology revealed to be different lesions. All images were evaluated by one musculoskeletal radiologist, regarding size, margins, internal echogenicity of lesions, and presence of posterior enhancement. Results: Of 21 lesions, there were 6 fibrous tumors including fibroma, giant cell tumor of tendon sheath, and fibromatosis, 3 hemangiomas, 2 epidermal inclusion cysts, 2 chondromas, 2 angioleiomyomas, 1 trichilemal cyst, 1 neurofibroma, 1 granular cell tumor, 1 neurilemmoma, 1 neuromyxoma, and 1 nodular hidradenoma. Mean size of the lesion was 1.1 cm. Margins were smooth in 10, mild lobulation in 8 and marked lobulation in 3 lesions. Lesions were hypoechoic in 16, anechoic in 4 and isoechoic in 1 case. Posterior acoustic enhancement was definitely present in 5 lesions. Conclusion: On the ultrasonography, various soft tissue lesions of the foot may be confused with ganglion. During surgical resection care should be given even to a simple ganglion as it might turn up to be a solid lesions such as fibrous tumors.