A radiolucent lesion adjacent to the roots of the mandibular right first and second premolars

Lateral periodontal cyst: report of case and review of the literature

BACKGROUND

As the lateral periodontal cyst (LPC) is an unusual odontogenic cyst, most papers are single case reports or series with a limited number of cases, with few large series. The aim of this study is to report an additional case of LPC, emphasizing the clinical, radiographic, and histopathological features, differential diagnosis, and review of 264 cases reported in the English-language literature.

CASE REPORT

A 51-year-old male patient presented with a well-delimited, radiolucent, mandibular lesion, located between the roots of the right lower lateral incisor and canine and evidenced during routine radiographic examination. A surgical excision was performed. Microscopically, there was a cystic cavity lined by simple squamous epithelium, compatible with LPC.

DISCUSSION

LPC is an unusual odontogenic cyst and presents a marked predilection for occurring in the mandible between the roots of canines and premolars. Accurate clinical and imaging exams should be performed for a correct approach and diagnosis.

Lateral periodontal cyst. Multifactorial analysis of a previously unreported series

The objective of the present study was to review a series of 23 lateral periodontal cysts and 2 botryoid odontogenic cysts retrieved from the files of the State University of New York at Buffalo (SUNY) Oral Pathology Biopsy Service for epidemiologic characteristics as well as radiographic findings, clinical presentation, histopathologic features, and management. This study corroborated some previously established characteristics of the lesion but also revealed some surprising aberrations. A significant difference in the age range and mean age by gender was detected with the Student's t test within this population at the 0.05 level. The classic presentation of a lateral periodontal cyst seems to be that of an asymptomatic, small, ovoid, well-corticated radiolucency that occurs in an interradicular locus in the mandibular premolar segment of a middle-aged man. However, lateral periodontal cysts may manifest with pain and cause cortical perforation, may present as large expansile radiolucencies, may arise in the maxillary molar segment, and may develop in young females. Because of the tendency for aggressiveness of other lesions that may present with a similar picture, it is important to establish the final diagnosis of lateral periodontal cyst on a histologic basis in conjunction with the clinical and radiographic findings.

Lateral periodontal cyst. Review of the literature and report of a case

The lateral periodontal cyst is a rare odontogenic cyst of developmental origin. It occurs on the lateral periodontal region of a vital tooth and has specific histologic features. In this paper a case of a lateral periodontal cyst is presented and cases previously reported in the literature are reviewed. The present case concerns a 50-year old woman who presented for an asymptomatic gingival swelling of the left canine mandibular region of 2 month's duration. X-ray examination showed a well circumscribed radiolucency with a radiopaque margin lying between the roots of the lateral incisor and canine. The associated teeth were vital. Enucleation of the lesion was performed. The histologic examination of the specimen showed a cyst lined by thin non-keratinized epithelium with focal thickenings containing clear cells.