Resumen de Lateral periodontal cyst: a rare clinicopathological presentation mimicking a residual cyst
Davi da Silva Barbirato, Mariana Fampa Fogacci, Monique Oliveira Rodrigues, Belmiro Cavalcanti Vasconcelos, Maria Cynésia Medeiros de Barros, Fábio-Ramôa Pires
This article describes an unusual clinical-radiographic presentation of a lateral periodontal cyst, as a differential diag- nosis of a residual cyst, following the ‘CARE guidelines for case reports’. The radiolucent lesion was identified on the imaging exam of a 53-year-old male patient. Based on radiographic findings and aspiration puncture, the probable diagnosis was a residual cyst; however, histological analysis revealed a thin, non-inflamed fibrous capsule covered by some epithelial layers in most of the lesion. The definitive diagnosis was a lateral periodontal cyst with unusual clini- cal and radiographic features. The cyst was surgically enucleated and local bone neoformation was observed, with no signs of recurrence after 12 months. The results of this study suggest that a radiolucent lesion, suggestive of a residual cyst or keratocyst in the maxilla, may correspond to a lateral periodontal cyst. In this context, the histopathological analysis of the cyst is essential for the definitive diagnosis.
