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Nasopalatine Cyst or Apical Pathology? A Diagnostic Dilemma and How to Manage It

From Volume 47, Issue 2, February 2020 | Pages 165-169

Authors

Marialena Cresta

BDS, MFDS

Articles by Marialena Cresta

Robert Philpott

BDS, MFDS, MClinDent, MRD(RCSEd), PgCAP, FHEA

Senior Clinical Lecturer in Endodontics/Honorary Consultant, Edinburgh Dental Institute, Lauriston Building, Lauriston Place, Edinburgh EH3 9HA, UK

Articles by Robert Philpott

Eleni Besi

DDS, MFDS (RCSEd) MSc, PGCert, MOralSurg, MDTFEd

StR in Oral Surgery, Edinburgh Dental Institute, Lauriston Building, Lauriston Place, Edinburgh EH3 9HA, UK

Articles by Eleni Besi

Abstract

Nasopalatine cysts (NPCs) present as maxillary midline radiolucencies and are the most common radiolucency of non-odontogenic origin. The proximity of these radiolucencies to the apical region of the maxillary anterior teeth may complicate diagnosis. We are presenting two cases of maxillary midline radiolucencies with a similar presentation but different diagnoses. Reaching a definitive diagnosis may be complicated, even when a detailed clinical examination has been carried out. The use of CBCT has been a valuable addition to the diagnostic armamentarium which can help clinicians reach more accurate diagnoses in such cases. A definitive diagnosis may be established following histopathological analysis, which is indicated in symptomatic cases.

CPD/Clinical Relevance: This article highlights the importance of careful assessment of apical radiolucencies associated with the maxillary midline, leading to the correct diagnoses and appropriate treatment planning.

Article

Nasopalatine cysts (NPCs) arise from the epithelial remnants of Jacobson’s organ along the nasopalatine duct.1 NPCs are located in the midline of the anterior maxilla and may also be referred to as nasopalatine, incisive canal, median palatine, palatine papilla or median alveolar cysts. NPCs are the most common non-odontogenic cyst, found in 1−4% of the total population and present more commonly in males in the 4th decade.2,3,4

The cause of the epithelial remnant proliferation and cyst formation is not fully understood. It has been suggested that NPCs arise from the entrapment of epithelium during fusion of the embryological process. More recently, the theory most accepted is that NPCs originate from the presence of oronasal ducts in the incisive canal.5 The development of NPCs is stimulated by trauma, bacterial infections and mucous retention.2

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