• 대한골관절종양학회지
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• 제5권1호
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• pp.35-43
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• 1999

1984년 2월부터 1997년 11월까지 한양대학교 의과대학교 정형외과학교실에서 경험한 양성 연부조직 종양 중 병리조직학적으로 확진된 총 230례에 대하여 임상적으로 분석하여 다음과 같은 결과를 얻었다. 1. 양성 연부조직 종양중 결절종(26.5%)이 가장 많았고, 혈관종(19.6%), 지방종(17.0%), 슬와낭종(13.0%), 신경초종(7.0%)의 순으로 발생하였다. 그리고, 임파관종(3.9%), 섬유종증(3.0%), 사구종(3.0%), 신경 섬유종(2.2%), 평활근종(0.9%), 색소 융모결절성 활막염(0.9%), 점액종(0.9%), 외상성 신경종(0.9%), 황색종(0.4%), 활액막성 연골종증(0.4%), 골화성 근염(0.4%)이 발생하였다. 2. 종양의 분포 연령은 비교적 전 연령층에 걸쳐 고르게 발생하였다. 이 중 혈관종과 임파관종은 20세 이전에 호발하는 경향을 보였다. 3. 성별 분포는 남자 98례, 여자 132례로 여자에게 약 1.3배 많았으나, 슬와낭종과 신경초종은 남자에게 호발하였다. 4. 15세 이하의 소아에서는 혈관종, 결절종, 임파관종, 지방종의 순으로 발생하였고, 16세 이상의 성인에서는 결절종, 지방종, 슬와낭종, 혈관종의 순으로 발생하였다. 5. 발생 부위는 하지(60.0%)에 호발하였고, 상지(35.2%), 체간(4.8%)의 순으로 발생하였다. 6. 크기가 1cm 미만인 종양은 결절종, 사구종, 혈관종, 임파관종의 순으로 발생하였고, 1-5cm인 종양은 결절종, 혈관종, 슬와낭종, 지방종, 신경초종의 순으로 발생하였다. 5cm 이상인 종양은 지방종, 혈관종, 임파관종, 결절종의 순으로 발생하였다. 7. 모든 환자는 절제술로 치료받았고, 국소 재발은 22례(9.6%)에서 나타났으며 혈관종이 12례로 가장 많았다. 재발율은 외상성 신경종, 색소 융모결절성 활막염, 신경 섬유종, 섬유종증, 혈관종의 순으로 나타났다.

• Archives of Plastic Surgery
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• 제34권4호
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• pp.508-511
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• 2007

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.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제31권6호
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• pp.499-504
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• 2009

We investigated 52 cases of 42 patients who were diagnosed as odontogenic keratocyst in the department of Oral and maxillofacial Surgery of Kyungpook National University from 2006 to 2008, and following results were obtained. 1. Among 52 cases of OKCs, all cases were parakeratinzied. 2. Among 52 cases of OKCs, 42 cases were type I, 9 cases were type II and 1 case was type V. 3. Among 52 cases of OKCs, there were bud-like proliferation of basal cell layer on connective tissue area on 10 cases, satellite cysts on overlying oral mucosa or connective tissue area on 6 cases and rests of epithelium on connective tissue area on 6 cases. 4. Among 52 cases of OKCs, there were focal inflammation on the epithelium of the OKCs on 6 cases and diffuse inflammation on 8 cases. 5. Among 52 cases of OKCs, cytokeratin-10 was expressioned on superficial and intermediate layer on all cases. Accordingly, the presence or absence of cytokeration-10 on the epithelium of the cyst will be good differential diagnosis of between OKC and dentigerous cyst.

• Journal of Chest Surgery
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• 제8권1호
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• pp.13-18
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• 1975

Developmental pulmonary abnormalities are known as rare condition. diagnosis was made at autopsy in the early cases reported, however, as diagnostic aids such as X-ray, bronchography, bronchoscopy and exploratory thoracotomy have come into use, the condition is being discovered more often recently in living persons, and it appears to occur with sufficient frequency to merit consideration in the differential diagnosis of certain chest conditions. According to Schneider and Boyden there are three main types of this abnormality: [1] Agenesis, in which there is complete absence of one or both lungs; there is no trace of bronchial or vascular supply or of parenchymal tissue. [2] Aplasia, in which there is suppression of all but a rudimentary bronchus which ends in a blind pouch; there are no vessels or parenchyma. [3] Hypoplasia, in which the bronchus is fully formed but is reduced in size and ends in a _ flesh structure which usually lies within the mediastinum. Rudimentary pulmonary parenchyma may be present around the bronchial stump and often is the site of cystic malformation. We experienced one case of hypoplastic lung with cystic malformation which was originated from a small aberrant rudimentary bronchus, and the rudimentary bronchus was branched from the right side of tracheal end. The diagnosis was finally confirmed by the histopathological finding. Now, we report this case with a brief review of literatures.

• 대한수의학회지
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• 제49권4호
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• pp.291-295
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• 2009

A dead stray cat was necropsied for zoonotic feline disease monitoring. Grossly, there were no specific lesions. Major microscopic lesions included lymphocytic meningoencephalitis, malacia, and tissue cysts in the cerebral and cerebellar cortex. The size and shape of tissue cysts were identical to those of Apicomplexa including Toxoplasma (T.) gondii. Bradyzoites in the tissue cyst were strongly positive for T. gondii by immunohistochemistry. Electron microscopy revealed that bradyzoites within the tissue cyst were similar to the morphological features of T. gondii. Fresh tissue samples were examined by a polymerase chain reaction assay and resulted in a specific band of T. gondii only in the brain. Based on the results, this case was diagnosed as toxoplasmosis. This is the first case of toxoplasmic meningoencephalitis in a cat in Korea.

• Archives of Plastic Surgery
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• 제37권1호
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• pp.75-78
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• 2010

Purpose: Whereas oral ranula is relatively common and presents as a cyst in the mouth, the plunging ranula is rare and manifests itself as a mass in the neck with or without an associated oral lesion. The purpose of this study is to examine the clinical characteristics of rare bilateral plunging ranula arising from accessory submandibular gland in order to provide our experience for its correct diagnosis and treatment. Methods: A 13-year-old girl manifests as a slow growing painless, non-mobile swelling in the anterior neck. She underwent surgery via a cervical approach. A pseudocyst was extirpated and adjacent accessory gland tissue and related lymph node were removed. Results: The histologic appearance is characteristically of a cyst, devoiding of epithelium or endothelium, with a vascular fibro-connective tissue wall containing some chronic inflammatory cells and macrophage stuffed with mucin. Pathologic findings represented a form of myxomatous degeneration and lined by condensed connective tissue and granulation tissue. The nature of the accessory gland tissue was same as subligual gland. Although total submandibular or sublingual gland excision was not performed, no recurrence was observed during 6 months follow-up periods. Conclusion: Usually, unilateral plunging ranula develops commonly because of rupture of sublingual gland duct by trauma and extravasation of salivary secretion to the adjacent tissue. But our case developed because of bilateral congenital accessory submandibular gland. This is thought to be a result from a congenital failure of canalization of the terminal end of the duct. Finally, the correct diagnosis is essential for the most effective treatment, which is excision of the ranula and related accessory salivary gland. We performed excision of accessory submandibular gland and plunging ranula and had a good result without recurrence.

• 대한기관식도과학회지
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• 제17권1호
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• pp.50-52
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• 2011

Ectopic thyroid gland is a defined as thyroid tissue located in a site other than its usual pre-tracheal location. Ultrasound examination, CT scan, thyroid scan, and thyroid iodine uptake test are all valuable modalities for a differential diagnosis. Although most of cases are asymptomatic, treatment is indicated when there are symptoms related to progressive growth of mass. This article reports a ectopic thyroid cyst in the anterior neck that was similar to deep neck infection accompanied by acute airway obstruction.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제20권3호
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• pp.241-245
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• 1998

The plunging ranula or cervical ranula is amucous extravasation cyst of the sublingual gland. It is slightly common in females, shows no side preference, and is more prevalent in the second and third decades of life. It typically manifests as a painless, nonmobile swelling in the neck. The pathogenesis of plunging ranula is the discontinuities of the mylohyoid muscle in a position that would allow extravasation of sublingual gland mucin. The histologic appearance is characteristically of a cyst, devoid of epithelium or endothelium, with a vascular fibro-connective tissue wall containing some chronic inflammatory cells and macrophages stuffed with mucin. The correct diagnosis is essential for the most effective treatment, which is exicision of the sublingual gland. The plunging ranula must be differentiated clinically and histomorphologically from thyroglossal duct cyst, dermoid cyst, branchogenic cyst, lymphangioma, laryngocele, lipoma, hemangioma, cervial thymic cyst, cysts of the parathyroid or thyroid gland, lymphadenopathy, abscess, or tumor. We report a case and review the literatures, in our case, 23-year old man were diagnosis as plunging ranula after have been taken sialogam, MRI, etc. He underwent surgery via a cervical approach. The ranula reached the anterior neck by passing through a dehiscence in the mylohyoid muscle. A pseudocyst was extirpated. Although total sublingual gland excision was not performed, no recurrence was observed during 6 months follow-up periods.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제32권2호
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• pp.173-177
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• 2010

In 1942, Stafne described 35 "bone cavities" at the angle of the mandible. They appeared as unilocular, well-circumscribed, round or elliptical radiolucencies located below the inferior dental canal and between the angle of the mandible and first molar tooth. Since 1942, these lesions have been frequently described under various terms: aberrant or ectopic salivary gland; static or latent or idiopathic defect, cavity or cyst; mandibular salivary gland inclusion; lingual mandibular cavity; and Stafne's cyst, defect or cavity. Usually they were asymptomatic, with a predilection for men between age 50 and 70 years, and almost unilateral. At surgical exploration, they appeared as concavities on the lingual cortex and contained salivary gland tissue, often in continuity with the submandibular gland. In 1957, Richard and Ziskind were the first to report the appearance of a Stafne's cyst in the premolar region. Contrary to posterior defects, the anterior defects are difficult to diagnose clinically because the mandibular canal is not present, and the unilocular radiolucency can be confused with other cysts (radicular, residual, odontogenic, lateral periodontal,etc). The purpose of the present report is to describe an unusual case of Stafne's cyst in the anterior region of the mandible in 58-years-old woman.

• Archives of Plastic Surgery
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• 제38권3호
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• pp.251-256
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• 2011

Purpose: A nasolabial cyst is a rare non-odontogenic, soft-tissue, developmental cyst arising anywhere on the face inferior to the nasoalar region. It is thought to arise from either epithelial remnants trapped along the lines of fusion during the development of face or the remnants of the developing nasolacrimal duct. This study examines various features of nasolabial cysts with bony involvement to provide a basis for correct diagnosis and treatment. Methods: Eight cases of nasolabial cyst treated in Soonchunhyang Hospital between March 2002 and July 2010 were examined in terms of their clinical features and radiological and histological findings. Seven patients underwent surgical excision of the cyst via an intraoral, sublabial approach. One underwent incision and drainage. Results: Our eight patients were seven women and one man. The most frequent symptoms and signs were facial deformity and swelling of the nasolabial fold. Computed tomography (CT) showed a well-circumscribed cystic mass lateral to the pyriform aperture. Seven cases had erosive lesions on CT, and the intraoperative findings were consistent with a nasolabial cyst with a bony defect. Typical histopathological findings showed that these cysts were most frequently lined with respiratory epithelium with ciliated columnar cells and cuboid cells. No patient developed complications or recurrences. Conclusion: A nasolabial cyst is often unrecognized or confused with other intranasal masses, including fissural and odontogenic cysts, midface infections, or swelling in the nasolabial area. Therefore, a careful clinical and radiological evaluation should be preformed when considering the differential diagnosis. We present eight patients with nasolabial cysts treated via a gingivobuccal approach with excellent functional and cosmetic results.