귓바퀴 후방에 발생한 피부모양 기형낭

김유진,이지훈 대한두개안면성형외과학회 2007 Archives of Craniofacial Surgery Vol.8 No.2

Dermoid cyst is a teratoma that contains developmentally mature skin, with hair follicles, sweat glands and so on. Dermoid cyst is painless oval or round shaped cystic mass that can make the bony depression after complete excision. Dermoid cyst is commonly found on lateral brow, nasofrontal area, subglottic area. But, we report two cases of dermoid cyst on retroauricular area. A 27 year-old male patient wanted to excise the retroauricular mass. Computed tomography showed that the mass looked like a dermoid cyst without connection to cranial cavity. So, we could completely excise the mass. The other 29 year-old male patient show the infected cystic mass on retroauricular area. We could completely excised the mass. After the excision of the mass, pathologist reported these are dermoid cysts. Retroauricular dermoid cysts have been rarely reported. But, we can suspect the retroauricular dermoid cyst originated in squamomastoid suture through the patient’s history, physical and radiologic examination.

Dermoid cysts: Epidemiology and diagnostic approach based on clinical experiences

Choi, June Seok,Bae, Yong Chan,Lee, Jae Woo,Kang, Gyu Bin Korean Society of Plastic and Reconstructive Surge 2018 Archives of Plastic Surgery Vol.45 No.6

Background Dermoid cysts are congenital tumors that are benign. Dermoid cysts with intracranial extension can cause serious neurological complications. It is important, therefore, to determine whether a patient has a dermoid cyst when their chief concern at a doctor's visit is a mass in the head or neck area. In this study, we present a literature review of dermoid cysts and an analysis of the authors' experiences, with the goal of providing guidance useful for the diagnosis and treatment of dermoid cysts. Methods This study retrospectively analyzed the medical records of 62 patients who visited the two medical clinics with which the authors are affiliated. The patients were enrolled between October 2003 and January 2017. Results Of the 62 patients analyzed in this study, 32 were 0 to 5 years of age (52%) and 23 were 17 years of age or older (37%). Forty-seven patients underwent 1 or more imaging study during the process of diagnosis. Thirty-two patients were suspected to have a dermoid cyst. Forty-nine patients were analyzed to determine the depth of the cyst. Bone was seen in 43 patients through imaging tests or during actual surgery, and nine of the 43 had bony problems (21%). Conclusions This study found that dermoid cysts were present in many adults, and that a high rate of deep lesions was observed, as well as many cases in which even the bone was affected. These results suggest, therefore, that dermoid cysts should be considered, and medical professionals should actively conduct imaging studies.

피하 흉터 조직에서 발견된 후천성 유피낭종

김형진,범진식,변재경,김양우 대한성형외과학회 2007 Archives of Plastic Surgery Vol.34 No.4

Purpose: Dermoid cysts are almost always caused by congenital events. The most widely accepted pathogenesis is that the cysts are dysembryogenetic lesions that arise from ectodermic elements entrapped during the midline fusion. We report a rare case of dermoid cyst, which occurred not congenitally but newly in the subcutaneous scar tissue secondary to trauma. Methods: A 26-year-old man had a deep submental laceration caused by a car accident and got a primary wound closure 16 months ago. There were 18 cm-long submental hypertrophic scar and newly developed palpable masses inside the subcutaneous layer at the center of the scar. Initial impression was an epidermal cyst or a thyroglossal duct cyst. Ultrasonographic finding showed two cystic masses inside the scars at the submental area, but impressed dermoid cysts. The cystic masses were completely removed with W-plasty and histological examination were followed.Results: The histological diagnosis was dermoid cysts which were mainly composed of keratotic squamous epithelium in their inner surface linings and numerous skin appendages such as sebaceous glands, sweat glands, and hair follicles in their cystic lumens histopathologically. During the follow-up period of 25 months, there was no recurrence of any subcutaneous mass in the site of scar. Conclusion: We report a very unusual case of dermoid cysts developed by an acquired cause, considering that the accidental inclusion of deep skin elements caused by a trauma can be a critical origin of dermoid cysts.

영아의 상순에 발생한 유피낭종

김성오,문성환,이제호,최형준,최병재 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.3

유피낭종(dermoid cyst)은 표피형태의 상피세포로 이루어진 낭종의 벽에 피부부속조직을 포함하는 발생학적 낭종이다. 눈썹 부근이나 구강저의 중심선에 호발하지만 혀, 입술, 협점막의 병소도 보고된 바 있다. 이 병소는 천천히 커지고 무통성이며 임파선비대는 동반하지 않는다. 내용물은 피지성, 화농성등이며 크기는 수 mm에서 12cm까지 다양하다. 조직학적 특징은 상피세포 이장과 낭종벽내의 땀샘, 피지샘, 모낭동의 피부부속조직의 존재이다. 유피낭종의 치료는 완전절제이다. 완전한 절제시 재발의 가능성은 거의 없다. 본 증례의 2세 여자 환아는 1년 전에 넘어진 이후 상순에 딱딱한 것이 생겼다는 것을 주소로 연세대학교 치과대학병원 소아치과에 내원하였다. 임상 구강검사 결과 둥근 고무질감의 종괴가 상순에서 관찰되었다. 조직학적 검사를 위해 조직생검을 시행하였으며, 낭종의 벽에서 피지샘이 관찰되었다. 이에 상순에서는 드물게 발생하는 유피낭종으로 진단되어 보고하는 바이다. Dermoid cyst is a developmental cyst that is lined by epidermis-like epithelium and contains dermal adnexal structures in the cyst wall. Dermoid cyst most occur in the eye brow although occasionally develop in other locations such as midline of the floor of the mouth, tongue, lip and buccal mucosa. The lesion is slow growing and painless without lympadenopathy. The contents of the dermoid cyst can be caseous or sebaceous. The size can vary from a few millimeters to 12cm in diameter. Histologically, dermoid cyst is lined by epidermis and adnexaes such as sweat gland, sebaceous glands and hair follicles are present in the cyst wall. The 2-year-old female of this case visited Department of Pediatric Dentistry, College of Dentistry, Yonsei University with a chief complaint of the emergence of mass on her upper lip. An excisional biopsy was carried out for a histological examination and sebaceous gland was observed in the cyst wall. The lesion was diagnosed as dermoid cyst. Delmoid cyst does not recur if complete excision is accomplished.

Dermoid cyst: clinical and ultrasonographic findings

( Dae-lyong Ha ),( Hyunju Jin ),( Hyang-suk You ),( Woo-haing Shim ),( Jeong-min Kim ),( Gun-wook Kim ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bum Kim ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.2

Background: Dermoid cysts arise from skin trapped within embryonic fusion plane. Precise diagnosis of dermoid cyst is important, because it can relapse as a result of incomplete excision due to subcutaneous location or connection to the underlying structures. Objectives: To investigate clinical characteristics and ultrasonographic findings of dermoid cyst Methods: The patients diagnosed as dermoid cyst were reviewed in Pusan National University Hospitals (Busan and Yangsan) during 10-year-period (2007-2016). Clinical manifestations, ultrasonographic findings, and histopathologic findings were checked. Results: A total of 33 patients (18 male and 15 female) were included. The mean age of initial visit was 10.7 years (range 0.1-57). Site of involvement included head in 21 (63.6%), trunk in 6 (18.2%), neck in 6 (9.1%), and upper extremities in 3 (9.1%). Ultrasonography was performed in 25 cases. Mean diameter of long axis of cysts was 1.1cm (range 0.2-3.6) and mean depth was 0.4cm (range 0.2-1.3). All cysts extended to the subcutaneous tissue, and 68% (17/25) had connection with underlying muscle. The outer margin of cyst had well-demarcation with positive posterior acoustic enhancement in all cases. Conclusion: To our knowledge, this is the first study investigating clinical and ultrasonographic findings of dermoid cyst in Korean patients. We suggest ultrasonographic examination should be done to figure out the extent and location of dermoid cyst prior to surgical approach.

Dermoid cysts: Epidemiology and diagnostic approach based on clinical experiences

June Seok Choi,배용찬,Jae Woo Lee,Gyu Bin Kang 대한성형외과학회 2018 Archives of Plastic Surgery Vol.45 No.6

Background Dermoid cysts are congenital tumors that are benign. Dermoid cysts with intracranial extension can cause serious neurological complications. It is important, therefore, to determine whether a patient has a dermoid cyst when their chief concern at a doctor’s visit is a mass in the head or neck area. In this study, we present a literature review of dermoid cysts and an analysis of the authors’ experiences, with the goal of providing guidance useful for the diagnosis and treatment of dermoid cysts. Methods This study retrospectively analyzed the medical records of 62 patients who visited the two medical clinics with which the authors are affiliated. The patients were enrolled between October 2003 and January 2017. Results Of the 62 patients analyzed in this study, 32 were 0 to 5 years of age (52%) and 23 were 17 years of age or older (37%). Forty-seven patients underwent 1 or more imaging study during the process of diagnosis. Thirty-two patients were suspected to have a dermoid cyst. Forty-nine patients were analyzed to determine the depth of the cyst. Bone was seen in 43 patients through imaging tests or during actual surgery, and nine of the 43 had bony problems (21%). Conclusions This study found that dermoid cysts were present in many adults, and that a high rate of deep lesions was observed, as well as many cases in which even the bone was affected. These results suggest, therefore, that dermoid cysts should be considered, and medical professionals should actively conduct imaging studies.

외이부에 발생한 유피낭종 3예

부성현,홍지원 대한이비인후과학회 2009 대한이비인후과학회지 두경부외과학 Vol.52 No.5

Dermoid cysts, also referred as “dysontogenetic cyst”, are ectodermal cysts that contain epithelial linings as well as adnexal structures. They are divided into 3 categories : epidermoids, dermoids and teratoids. Although dermoid cysts represent a separate entity, the term “dermoid” is generally used to indicate all 3 categories. Dermoid cysts may occur in numerous areas of the body. However, dermoid cysts on the head and neck region are relatively rare. A few cases of dermoid cysts have been reported especially in the auriculotemporal area but not in the external auditory canal or preauricular area. We experienced 3 unusual cases of dermoid cysts occurring in the auriculotemporal area that includes external auditory canal, preauricular and postauricular area. Because of its location and rarity, we report these cases of dermoid cyst in the auriculotemporal area with a brief review of literatures.

Clinical Characteristics of Idiopathic Epidermoid and Dermoid Cysts of the Ear

조이선,이동희 대한청각학회 2017 Journal of Audiology & Otology Vol.21 No.2

Background and Objectives: Epidermoid and dermoid cysts are benign cystic lesions, linedby ectodermal squamous epithelium. They are not common in the head and neck areas,which constitute ~7% of all cases of epidermoid and dermoid cysts. The aim of this studywas to investigate the clinical characteristics of epidermoid and dermoid cysts that developedaround the ear. Subjects and Methods: The clinical records were retrospectively reviewedfor patients confirmed histologically as idiopathic epidermoid and dermoid cysts ofthe ear from January 2011 to December 2015. Results: Total 15 cases consisted of 14 epidermoidcysts and only 1 dermoid cyst. There were 11 males and 4 females (mean age of37.8±16.8 years old). Right side was 7 cases and left was 8. The cyst was located at the lobulein 4 cases, at the ear canal in 4 cases, at the preauricular area in 4 cases, and at the postauriculararea in 3 cases. In cases of epidermoid cysts, there was no significant difference inage, sex, and size according to the location. Patients with cysts on helix were younger thanothers. Conclusions: This study demonstrated that most cutaneous cysts developing aroundthe ear were epidermoid cysts and there was no site preference for occurrence of epidermoidcysts.

Dermoid cyst on the posterior auriculocephalic sulcus

( Eun Jae Shin ),( In Jung Kang ),( Min Jae Gwak ),( Ki Heon Jeong ),( Min Kyung Shin ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1

Dermoid cysts develop from sequestration of cutaneous tissues along embryonal lines of closure. The most common clinical feature is a single nontender small subcutaneous nodule at birth on the lateral aspect of the upper eyelid. Those occurring in the cervicofacial region are uncommon, accounting for about 7% of all dermoids. Dermoid cysts around the auricular area are extremely rare. We describe a case with dermoid cyst at the posterior auriculocephalic sulcus. A 13-year-old woman presented with solitary 2 x 1.5cm sized flesh colored cystic mass on the left side of the auriculocephalic sulcus since birth. The patient had no history of trauma, family history, or other associated abnormalities. Excision specimen revealed cystic lumen lined with stratified squamous epithelium consisted of keratinous cyst with laminated keratin material and hair follicles. Dermatologist must be aware that a dermoid cyst should be included among the candidates for differential diagnosis when a cystic tumor are identified on the posterior auricular area and we report this case with a review of the literature.

측두와에 발생한 피부모양기형낭종

이학승,최승석,안희창,이장현 대한두개안면성형외과학회 2010 Archives of Craniofacial Surgery Vol.11 No.1

Purpose: Dermoid cysts are benign neoplasms that are derived from both ectoderm and mesoderm. Approximately 7 percent of all dermoid cysts occur in the head and neck,as most common sites are the lateral ends of the eyebrows,the midline in the nasal root and neck. Rarely they can be found in the frontal sinus, temporal bone, maxilla and the floor of the mouth. Dermoid cysts in the temporal fossa are extremely rare. We experienced a characteristic dermoid cyst that occupied the temporal fossa. Methods: A 16-year-old man had a progressive enlarging mass on the left eyebrow. Computerized tomographic scan showed a bulging mass in the temporal fossa, and it had the density similar to that of fat. The size of the mass was 3 × 3 × 2 cm, and it was composed of high density of fat with clear margin. There was no bony invasion, but the mass was fixed on bone. Results: We performed the surgery through coronal incision under general anesthesia. Because the mass was closely connected with temporal fat pads, we removed this mass with some portion of temporal fat pads, avoiding damage to the facial nerve. The postoperative course was ordinary without complication. Conclusion: The reports about dermoid cyst on the temporal fossa is uncommon. However, if there is a mass in the temporal fossa which has the density similar to that of fat in CT scan, we should consider the possibility of dermoid cyst. We suggest that excision through coronal incision with bewaring temporal fat pad can induce good result. (J Korean Cleft Palate Craniofac Assoc 11: 65, 2010)