Nasolabial cyst / histopathology, clinical and radiographic features slideshare ppt

Nasolabial cyst

It is a developmental Cyst of soft tissue located in the anterior mucobuccal fold beneath the ala of the nose and most likely developed from remnants of an inferior portion of nasolacrimal duct.

It is also known as nasoalveolar cyst or klestadt cyst.

Clinical features

1. It is present entirely in soft tissue in the anterior maxillary vestibule 
2. Below ala of the nose deep in the nasolabial crease
3. It is unilateral sometimes bilateral painless soft tissue swelling
4. Nasolabial crease appears to be absent
5. If we retract the upper lip properly we can see cyst swelling in the vestibule
6. Cyst occurs in 4th to 5th decade of life

Radiographic features

1. Since cyst is present in soft tissue so it is not visible in a radiograph
2. However contrast can be used for better visualization
3. Pressure-induced saucerization of underlying bone of maxilla can be seen

Histopathology

1. The epithelium is pseudostratified columnar with a variable number of goblet cells (mucous cells) lined by cuboidal cells
2.  A narrow zone of dense homogeneous fibrous tissue is seen adjacent to the cyst lining

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