• Imaging Science in Dentistry
• /
• 제41권4호
• /
• pp.171-175
• /
• 2011

Gorlin-Goltz syndrome is an infrequent multi-systemic disease which is characterized by multiple keratocysts in the jaws, calcification of falx cerebri, and basal cell carcinomas. We report a case of Gorlin-Goltz syndrome in a 23-year-old man with emphasis on image findings of keratocyctic odontogenic tumors (KCOTs) on panoramic radiograph, computed tomography, magnetic resonance (MR) imaging, and Ultrasonography (US). In this case, pericoronal lesions were mostly orthokeratinized odontogenic cyst (OOC) concerning the MR and US study, which tended to recur less. The aim of this report was to clarify the characteristic imaging features of the syndrome-related keratocysts that can be used to differentiate KCOT from OOC. Also, our findings suggested that the recurrence rate of KCOTs might be predicted based on their association to teeth.

• 대한치과의사협회지
• /
• 제55권7호
• /
• pp.481-488
• /
• 2017

The aim of this study is to examine the incidence of odontogenic tumors and to review the clinical and radiological findings for the most frequent three types in Korea. Odontoma, ameloblastoma and keratocystic odontogenic tumors are the most frequent odontogenic tumors in Korea. We provide an overview of these tumors based on clinical and radiographic findings.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제42권5호
• /
• pp.284-287
• /
• 2016

Nevoid basal cell carcinoma syndrome (NBCCS), also known as Gorlin syndrome, is characterized by various embryological deformities and carcinoma formation. It is caused by PTCHI gene mutations and is autosomal dominantly inherited. Some of the main symptoms of NBCCS are multiple basal cell carcinomas, multiple keratocystic odontogenic tumors (KCOTs) of the mandible, hyperkeratosis of the palmar and plantar, skeletal deformity, calcification of the falx cerebri, and facial defomity. Recurrent KCOT is the main symptom of NBCCS and is present in approximately 90% of patients. In NBCCS, KCOTs typically occur in multiples. KCOTs can be detected in patients under the age of 10, and new and recurring cysts develop until approximately the age of 30. The postoperation recurrence rate is approximately 60%. This case report presents a 14-year-old female patient with a chief complaint of a cyst found in the maxilla and mandible. The patient was diagnosed with NBCCS, and following treatment of marsupialization and enucleation, the clinical results were satisfactory.

• Asian Pacific Journal of Cancer Prevention
• /
• 제16권15호
• /
• pp.6289-6292
• /
• 2015

Purpose: To determine the biological behaviour of common odontogenic cystic lesions by analysing and comparing bcl-2 expression amongst them. Materials and Methods: Our study covered 90 formalin fixed paraffin embedded tissue samples: 26 primary cases each of radicular cysts (RC), dentigerous cysts (DC) and odontogenic keratocysts (OKC) and 12 of recurrent OKCs. Bcl-2 expression was analysed immunohistochemically and data analysis was accomplished using SPSS version 17.0. Means were taken for age while for gender and site of the lesions frequencies and percentages were determined. The Chi-square test was applied to evaluate any statistically significant difference of bcl-2 expression in these lesions and p value of ${\leq}0.05$ was taken as significant. Results: All the recurrent OKCs showed a strong positivity for bcl-2 that was absent in all of its primary cases (p value<0.05). Although variation in expression of bcl-2 was not found to be statistically significant between RC and DC, however, it became significant when all primary cases of these common odontogenic lesions were compared. Conclusions: Recurrent OKC showed comparatively a more aggressive behaviour than their primary counterparts and also from RC and DC. Bcl-2 proved to be a valuable adjunct in determining aggressive biological behaviour of odontogenic lesions.

• 대한소아치과학회지
• /
• 제41권1호
• /
• pp.34-39
• /
• 2014

기저세포모반증후군은 상염색체 우성의 유전 질환이며 주요소견으로는 다발성 기저세포암, 악골의 다발성 각화낭종, 늑골이상, 손과 발바닥의 소와, 대뇌겸의 석회화 등이 있다. 기저세포모반증후군에서 호발 하는 각화낭성 치성종양은 치성기원의 골내종양으로 착각화된 중층 편평상피에 의해 특징적으로 이장되어 있고 공격적이고 침습적인 성향을 갖는 것으로 정의된다. 본 증례는 감별진단이 필요한 상악 견치부위의 단방성의 낭종을 주소로 내원한 환아가 조직검사를 통해 각화낭성 치성종양으로 밝혀진 후 임상적, 방사선학적 검사를 통해 기저세포모반 증후군으로 진단된 경우이다. 종양은 적출술로 치료되었고 증후군과 연관된 추가적인 질환들의 조기진단을 위해 정기적인 검진이 필요할 것이다.

• 대한소아치과학회지
• /
• 제40권4호
• /
• pp.328-334
• /
• 2013

각화낭성 치성종양은 국소적으로 공격적이고, 높은 재발률을 가지며 뚜렷한 조직학적 특성이 있는 낭성 병소로 다양한 치료 방법이 사용되고 있다. 몇몇 학자들은 공격적인 형태의 치료방법을 주장하지만, 또 다른 학자들은 보존적인 치료를 선호한다. 본 증례들은 미맹출 치아를 가진 소아 환자들에게 보존적 외과적 방법인 조대술과 낭종 적출술을 이용하여 각화낭성치성종양을 치료하였고, 주기적인 검진을 시행중에 있다. 보존적 외과적 치료를 이용하여 각화낭성 치성종양을 치료하는 경우 치아와 해부학적 구조를 보호할 수 있어 소아 청소년 환자의 경우에게 좋은 치료 선택이 될 수 있다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제38권1호
• /
• pp.55-63
• /
• 2012

The odontogenic keratocyst (OKC) was originally classified as a developmental cyst, and OKCs were histologically divided into orthokeratotic (O-OKCs) and parakeratotic (P-OKCs) types. Clinical features differ between O-OKCs and P-OKCs with P-OKCs having a tendency to recur after surgical treatment. According to the revised histopathological classification of odontogenic tumors by the World Health Organization (2005), the term keratocystic odontogenic tumor (KCOT) has been adopted to describe P-OKCs. In this retrospective study, we examined 186 KCOTs treated at the Maxillofacial Surgery Department of the Tokyo Medical and Dental University Hospital from 1981 through 2005. The patients ranged in age from 7 to 85 years (mean, 32.7) and consisted of 93 males and 93 females. The most frequently treated areas were the mandibular molar region and ramus. The majority of KCOTs in the maxillary region were treated by enucleation and primary closure. The majority of KCOTs in the mandibular region were enucleated, and the wound was left open. Marginal resection was performed in the 4 patients with large lesions arising in the mandible. In patients who were followed for more than a year, recurrences were observed in 19 of 120 lesions (15.8%). The recurrences were found at the margins of the primary lesion in contact with the roots of the teeth or at the upper margins of the mandibular ramus. Clinicians should consider aggressive treatment for KCOTs because the recurrence rate of P-OKCs is higher than that of other cyst types such as O-OKCs, dentigerous cysts, primordial cysts that were non-keratinized, and slightly keratinized stratified squamous epithelium. Although more aggressive treatment is needed for KCOTs as compared to other cystic lesions, it is difficult to make a precise diagnosis preoperatively on the basis of clinical features and X-ray imaging. Therefore, preoperative biopsy is necessary for selecting the appropriate treatment for patients with cystic lesions.