Lateral periodontal cysts arising in periapical sites: a report of two cases.

Abstract

INTRODUCTION:

The lateral periodontal cyst is an uncommon odontogenic developmental lesion and chiefly arises in the alveolar bone between the roots of a pair of erupted teeth or lateral to a tooth root. Two atypical cases of the lateral periodontal cyst occurring in periapical sites are reported.

METHODS:

Both lesions presented as an incidental radiographic finding, appearing as an apical radiolucency with well-circumscribed sclerotic borders. One lesion, initially suspected to be of pulpal origin, persisted after endodontic therapy; the other case was first considered to be an odontogenic keratocyst. A biopsy was performed on each patient for lesional identity.

RESULTS:

Histopathologic assessment of each lesion was consistent with a lateral periodontal cyst and revealed thin, nonkeratinized epithelial linings containing nodular plaques and clear cells. The cyst walls were thickened and had minimal inflammation.

CONCLUSIONS:

The featured cases show that the lateral periodontal cyst is not always confined to the interradicular region and can masquerade as a lesion of endodontic origin. Aberrant cases warrant long-term surveillance.

• Authors: Nikolaos G Nikitakis, John K Brooks, Ioannis Melakopoulos, Rania H Younis, Mark A Scheper, Mark A Pitts, Hussain Al-Mubarak, Alexandra Sklavounou
• Journal: Journal of endodontics (J Endod) Vol. 36 Issue 10 Pg. 1707-11 (Oct 2010) ISSN: 1878-3554 [Electronic] United States
• PMID: 20850683 (Publication Type: Case Reports, Journal Article)
• Copyright: Copyright © 2010 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

Topics

• Aged
• Diagnosis, Differential
• Female
• Humans
• Male
• Middle Aged
• Periapical Diseases (diagnostic imaging, pathology, surgery)
• Periodontal Cyst (diagnostic imaging, pathology, surgery)
• Radiography