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Benign odontogenic tumors

Squamous odontogenic tumor

Last author update: 1 January 2004

Last staff update: 23 August 2022

Copyright: 2004-2023, PathologyOutlines.com, Inc.

PubMed Search: Squamous odontogenic tumor (mandible OR maxilla)

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Table of Contents

Cite this page: Pernick N. Squamous odontogenic tumor. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/mandiblemaxillasquamousodon.html. Accessed April 1st, 2023.

Definition / general

Uncommon
Most common in 20s but occurs in all ages, 2/3 male
Usually in anterior maxilla or posterior mandible in soft tissue or bone; 25% are multiple lesions
Arises from rests of Malassez in periodontal ligament
Low probability of recurrence, no malignant transformation reported

Radiology description

Well circumscribed
Semicircular radiolucency
Sclerotic border
Near teeth roots

Case reports

30 year old woman with an incidental finding during orthodontic treatment (Arch Pathol Lab Med 2001;125:297)

Treatment

Excision with extraction of involved teeth or en bloc resection

Microscopic (histologic) description

Anastomosing islands of benign, stratified squamous epithelium within fibrous stroma, often well defined nests with clear cells
May contain keratin or psammoma bodies
Often epithelial vacuolization and microcysts
No atypia, no mitotic figures, no inflammation, no peripheral palisading

Microscopic (histologic) images

Contributed by Kelly Magliocca, D.D.S., M.P.H.