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Case Rep Dent. 2014;2014:974241. doi: 10.1155/2014/974241. Epub 2014 Jul 08.

Odontogenic keratocyst mimicking paradental cyst.

Case reports in dentistry

Andrea Enrico Borgonovo, Luigi Bernardini, Paola Francinetti, Federica Rizza, Dino Re

Affiliations

  1. Department of Oral Surgery, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Via Commenda 10, 20122 Milan, Italy.
  2. Department of Oral Rehabilitation, Istituto Stomatologico Italiano, University of Milan, Via Pace 21, 20122 Milan, Italy.

PMID: 25114809 PMCID: PMC4119640 DOI: 10.1155/2014/974241

Abstract

Objective. The aim of this paper is to present an uncommon clinical and radiographic aspect of odontogenic keratocyst (OKC) mimicking paradental cyst. Methods. A 32-year-old female patient showed a well-delimited radiolucent lesion connected with the root of the left third molar with close anatomical relationship with the mandibular canal. The clinical, radiographic, and anamnestic features lead us to diagnose a paradental cyst that was treated by enucleation after extraction of the partially impacted tooth. Results. Histological analysis showed typical histological features of PKC such as the presence of a lining of stratified squamous epithelium with a well-defined basal layer of palisading columnar of cuboidal cells. Conclusion. Initial X-ray analysis and the position of the lesion related to the third mandibular tooth caused us to mistakenly diagnose a paradental cyst. We were only able to identify the cyst as an PKC rather than a paradental cyst after histological analysis.

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