Background

These cysts of the mouth and oral cavity are less common than odontogenic cysts.

GROSS APPEARANCE/ CLINICAL VARIANTS	CHARACTERIZATION
NASOPALATINE DUCT CYST	AKA incisive canal cyst, NPDC Derived from persistent embryonic duct that extends from the median ostium or two paramedian ostia in the region of a midline palatal gingival papilla (incisive papilla) and extends superiorly throught the anterior maxilla to ostia in floor of the nose
NASOLABIAL CYST	75% occur in women 10% bilateral 2.0 cm extraosseous cyst anterior to nasal floor/inferior nasal turbinate with protrusion of the upper lip, anterosuperior displacement of nasal ala, and fullness of the mucobuccal fold

 

HISTOLOGICAL TYPES	CHARACTERIZATION
NASOPALATINE DUCT CYST	Thin cuboidal, respiratory, or stratified squamous epithelium, or in combination
NASOLABIAL CYST	Lining of respiratory epithelium, occasionally squmaous or cuboidal

 

PROGNOSIS AND TREATMENT	CHARACTERIZATION
PROGNOSTIC FACTORS	NPDC may recure following enucleation

Rosai J. Ackerman's Surgical Pathology. Eight Edition. Mosby 1996.
Sternberg S. Diagnostic Surgical Pathology. Third Edition. Lipincott Williams and Wilkins 1999.

Mouth and Oral Cavity

Last Updated 11/29/2001