Epidermoid Cyst Arising in the Buccal Mucosa: Case Report and Literature Review

Epidermoid cysts are benign subcutaneous lesions, and the large majority of these cysts affect the floor of the mouth; however, the buccal mucosa is not a usual site of occurrence. To date, only 5 articles have been published with 6 cases of epidermoid cysts arising in the buccal mucosa. Therefore, the aim of this study was to describe the clinical, histopathological and immunohistochemical features of a case of epidermoid cyst located in the buccal mucosa. To our knowledge, this is the first report of an oral epidermoid cyst describing an intense foreign body gigantocellular inflammatory reaction against epithelial keratin component. Although the usual diagnosis for epidermoid cysts is based on histopathological findings, this case report addresses novel information regarding to the immunohistochemical pattern that may be found in these lesions.     

Adenomatoid Odontogenic Tumor (AOT) Arising from a Dentigerous Cyst: Literature Review and Report of a Case

Adenomatoid odontogenic tumor (AOT) is an uncommon benign tumor of odontogenic origin composed of odontogenic epithelium in a variety of histopathological patterns. These lesions are usually solid but are occasionally cystic. AOT has been reported to occur in association with odontogenic cysts. Very few cases have been described that arise in association with a dentigerous cyst. A systematic search of the English-language medical literature in PubMed and Medline search (keywords adenomatoid odontogenic tumor, dentigerous cyst) data bases revealed only ten such cases.The present case is very unique, exceptional and first of this kind that occurred in the posterior mandible associated with an impacted lower first premolar in a 19-year old female patient. The intraosseous follicular AOT, as this case reported here, frequently resemble dentigerous cysts. There is an uncertainty whether the lining of an associated cyst represents a true dentigerous cyst, cystic change within an AOT or may represent a distinct entity. We believe that this case represents an odontogenic cyst with neoplastic change. Hence, in such cases, the final diagnosis should be made on the basis of histological examination of extensive tissue sampling of entire excised tissue specimen. Further studies to determine whether the AOT derived from an odontogenic cyst could represent a distinct variant are to be done.     

新生儿牙龈囊肿病例报道及文献复习

报道1例新生儿牙龈囊肿病例,复习相关文献,通过介绍此类疾病的发生、发展及症状,为临床提供重要的诊断依据,从而避免不必要的治疗。     

Orthokeratinized Odontogenic Cysts Presenting as a Periapical Lesion: Report of a Case and Literature Review

Introduction

Inflammatory cysts, granulomas, abscesses, and fibrous scars represent most periapical radiolucencies. However, other less common lesions, such as orthokeratinized odontogenic cysts (OOCs), can be found at this region, and they deserve to be discussed because the prognosis for an OOC is different from that expected for the ordinary inflammatory periapical diseases.

Methods

An interesting case of OOC associated with a nonvital tooth in a 40-year-old woman is described. After a previous clinical diagnosis of a radicular cyst, the tooth was extracted, and the lesion was enucleated and submitted to microscopy examination.

Results

Because of the detection of an orthokeratinized epithelium lining, a diagnosis of OOC was concluded. After 2 years of periodic follow-up, no signs of recurrence were detected.

Conclusions

The presence of keratin in radicular lesions must be carefully evaluated to eliminate the diagnosis of lesions with more aggressive behavior, such as an OOC or even a keratocystic odontogenic tumor. Hence, histopathologic examination is mandatory to confirm the type of lesion and to differentiate other pathologic conditions, therefore establishing patients' prognoses precisely.     

面颊部皮样囊肿伴皮瘘1例报道

皮样囊肿在口腔颌面部比较常见,但不因继发感染而形成瘘管者少见。本文报道1例我院2014年收治的颊部皮样囊肿伴皮瘘的病例,复习相关文献并对其鉴别诊断、发生原因进行探讨。     

Misdiagnosis of a Nasopalatine Duct Cyst: A Case Report

Introduction

Nonendodontic lesions misdiagnosed as pathoses of endodontic origin are often referenced in the literature. One of the most frequent nonodontogenic cysts of the oral cavity, the nasopalatine duct cyst (NPDC), can be misdiagnosed as endodontic in nature.

Methods

A case is presented in which a patent NPDC was originally diagnosed as a sinus tract with subsequent endodontic nonsurgical retreatment and eventual extraction before endodontic consultation.

Results

After surgical treatment, a histopathologic diagnosis of an NPDC was confirmed.

Conclusions

If diagnosed incorrectly, inappropriate endodontic treatment of a NPDC may be initiated to include unnecessary extraction. An increased understanding of anatomy, the use of appropriate diagnostic tests to include cone-beam computed tomography imaging, and key examination techniques to distinguish endodontic lesions from nonendodontic pathoses are imperative for an accurate differential diagnosis and appropriate treatment outcome.     

腮腺内表皮样囊肿典型病例报告

<正>表皮样囊肿,可发生于身体的任何部位。口腔颌面部常见于口底、颏下、眼睑、额、鼻、眶外侧及耳下等部位。其好发于浅表部位,深部的常被误诊。发生于腮腺区的表皮样囊肿较少见,发生于腮腺内的更为罕见。现将1例典型病例报告如下。     

An Unusually Large Destructive Nasopalatine Duct Cyst: A Case Report

A case of an unusually large expansile nasopalatine duct cyst (NPDC) causing extensive destruction of the hard palate with involvement of the nasal cavity, perforation of the alveolar process and mucosa of the maxilla by pressure of the maxillary anterior teeth is being presented.     

Epidermoid Cyst Arising in the Buccal Mucosa: Case Report and Literature Review

Epidermoid cysts are benign subcutaneous lesions, and the large majority of these cysts affect the floor of the mouth; however, the buccal mucosa is not the usual site of occurrence. To date, only 5 articles have been published with 6 cases of epidermoid cysts arising in the buccal mucosa. Therefore, the aim of this study was to describe the clinical, histopathological and immunohistochemical features of a case of an epidermoid cyst located in the buccal mucosa. To our knowledge, this is the first report of an oral epidermoid cyst describing an intense foreign body gigantocellular inflammatory reaction against epithelial keratin component. Although the usual diagnosis for epidermoid cysts is based on histopathological findings, this case report addresses novel information regarding the immunohistochemical pattern which may be found in these lesions.     

腮腺区淋巴上皮囊肿1例报道

<正>淋巴上皮囊肿,又名良性淋巴上皮囊肿,临床较少见。可发生于腮腺、口底及腭扁桃体等颌面部各个部位,但副腮腺区淋巴上皮囊肿尚未见报道。我们收治了1例左侧腮腺区淋巴上皮囊肿,现报道如下。     

左颈部胸导管囊肿1例

胸导管囊肿多发生于纵隔,发生于颈部者临床罕见,我科于2006年1月收治1例,现报道如下。     

甲状舌管乳头状癌1例及文献复习

<正>甲状舌管囊肿发病率约为7%,其形成过程为胚胎发育过程中,甲状舌管远端发育形成的甲状腺甲状舌管未完全退化消失,形成甲状舌管囊肿[1]。甲状舌管囊肿发生癌变的病例非常罕见,约占1%。自1911年Bretano等报道第1例甲状舌管囊肿癌变病例以来,目前国内外共报道约300余例[2-3];其中国内仅见10余例,以个案报道为主[4-12]。甲状舌管癌约80%的组织学类型为甲状腺乳头状癌,虽然其预后     

Autotransplantation of Teeth Associated with Dentigerous Cyst: A Case Report

This paper discusses the treatment of impacted permanent incisors and unerupted ectopic canine associated with a dentigerous cyst in mixed dentition that was successfully managed by the combined approach of decompression followed by enucleation, primary closure, autotransplantation and endodontic therapy which enabled the utilization of teeth which were hitherto nonfunctional, transferred to an optimal functional and esthetic position. Decompression is a less invasive technique which reduces the cystic pressure, avoids a more stressful surgical procedure and necessity for general anesthesia. It gives more pleasing results as the body’s own mechanism heals the defect gradually. Autotransplantation of teeth induces bone formation around the root with the help of viable periodontal ligament on their root surface. In this case, bone lost by cyst was regenerated and lamina dura was appreciable in the follow up radiographs and transplanted teeth are functioning well.     

An Unusual Case of a Large Periapical Cyst Mimicking a Nasopalatine Duct Cyst

This article reports on the management of a large median symmetrical lesion of the anterior palate, which was clinically and radiographically diagnosed as an infected nasopalatine duct cyst. However, histopathology demonstrated it to be a radicular cyst of endodontic origin.     

下颌下腺外渗性囊肿1例临床报道及文献复习

涎腺囊肿大多发生在口腔内的腺体,如唇腺、舌前腺、舌下腺等,偶尔也发生在腮腺部位,而下颌下腺来源的囊肿临床上甚为罕见。本文报道1例下颌下腺囊肿及相关文献复习。