Background

These cysts of the mouth and oral cavity are less common than odontogenic cysts. They are generally classified by their location and represent inclusions of squamous epithelium.

OUTLINE

Epidemiology
Disease Associations
Pathogenesis
Laboratory/Radiologic/ Other Diagnostic Testing
Gross Appearance and Clinical Variants
Histopathological Features and Variants
Special Stains/ Immunohistochemistry/ Electron Microscopy
Differential Diagnosis
Prognosis
Treatment
Commonly Used Terms
Internet Links

GROSS APPEARANCE/ CLINICAL VARIANTS	CHARACTERIZATION
DERMOID CYSTS
EPIDERMOID CYSTS
FISSURAL CYSTS OF THE TOUNGE AND FLOOR OF THE MOUTH
NASOPALATINE DUCT CYST (MEDIAN ANTERIOR PALATAL)	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 (NASOALVEOLAR OR KLESTADT)	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
PALATAL CYSTS

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

Henry JB. Clinical Diagnosis and Management by Laboratory Methods. Twentieth Edition. WB Saunders. 2001.
Rosai J. Ackerman's Surgical Pathology. Ninth Edition. Mosby 2004.
Sternberg S. Diagnostic Surgical Pathology. Fourth Edition. Lipincott Williams and Wilkins 2004.
Robbins Pathologic Basis of Disease. Seventh Edition. WB Saunders 2005.
DeMay RM. The Art and Science of Cytopathology. Volume 1 and 2. ASCP Press. 1996.
Weedon D. Weedon's Skin Pathology Second Edition. Churchill Livingstone. 2002
Fitzpatrick's Dermatology in General Medicine. 6th Edition. McGraw-Hill. 2003.
Weiss SW and Goldblum JR. Enzinger and Weiss's Soft Tissue Tumors. Fourth Edition. Mosby 2001.

Basic Principles of Disease
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Commonly Used Terms
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Diagnostic Process
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Surgical Pathology Report
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Special Stains
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Last Updated 1/5/2004

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