Adenomatoid Odontogenic Tumor of the Mandible: An Unusual Clinical Presentation

Sneha Shrestha,Pradeep Acharya,Amita Rai,Ashish Shrestha,Mamta Dali,Bandana Koirala

doi:10.3126/bjhs.v3i2.20971

Sneha Shrestha, Pradeep Acharya + Show 4 more

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https://doi.org/10.3126/bjhs.v3i2.20971

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Abstract

Adenomatoid odontogenic tumor (AOT) is a rare benign neoplasm of odontogenic epithelial origin. A 12-year-old male reported to the department of pedodontics and preventive dentistry with swelling on lower part of face since seven months. On examination, firm to hard, nontender swelling, sized approximately 3 × 3 cm, extending from mandibular left canine to right lateral incisor with expansion of labial and lingual cortices was present. Radiograph revealed a well demarcated unilocular radiolucency exhibiting sclerotic border with flecks of calcification and displaced roots of mandibular anteriors and expansion of both cortices. Incisional biopsy confirmed the diagnosis of AOT. Enucleation of the lesion along with #31, 32 and curetiage was done under general anesthesia. Ribbond fiber prosthesis was given to maintain the arch integrity and esthetics. AOT in mandible (35%) of young male (36%) of extrafollicular variant (24%) is rare. We may encounter only 2-3 out of 100 AOT cases as typical as the case presented here. BJHS 2018;3(2)6: 504-507.

Highlights

Adenomatoid odontogenic tumor (AOT) is a benign neoplasm of odontogenic epithelial origin which was first described by Steensland in 1905
The term AOT was proposed by Philipsen and Birn in 1969 and World Health Organiza on (WHO) adopted the name in 1971.2,3 AOT usually presents as cys c lesion, but some mes it may present as a solid lesion with masses in the wall of alargecyst.4Here,wepresentacasewithanunusualpresenta on of AOT in anterior mandible causing extensive jaw swelling
The excised ssue lining was sent for histopathological examina on which revealed solid nodules of cuboidal and columnar cells of odontogenic epithelium forming nests or sheets like structures with minimal stromal connec ve ssue in between

Summary

INTRODUCTION

Adenomatoid odontogenic tumor (AOT) is a benign neoplasm of odontogenic epithelial origin which was first described by Steensland in 1905. Extra-oral examina on revealed a solitary diffuse swelling of size 3 × 3 cm on the chin involving midline, more towards the le side. Figure 3b: IOPAR showing well-demarcated unilocular radiolucency exhibi ng a smooth sclero c border with flecks ofcalcifica onandthedisplacedrootsof[31,32,33,41,42] Tomography (CT) scan revealed a large well-defined expansile unilocular ly c lesion with so ssue component and mul ple foci of calcifica on involving symphysis men segment of mandible with slight le extension suFrirgo. The excised ssue lining was sent for histopathological examina on which revealed solid nodules of cuboidal and columnar cells of odontogenic epithelium forming nests or sheets like structures with minimal stromal connec ve ssue in between. (Figure 5a, 5b) Based on clinical, radiographic, and histopathological examina on, final diagnosis of adenomatoid odontogenic tumor was made Underlying surrounding connec ve ssue comprised of mature fibrous stroma with numerous odontogenic cell rests. (Figure 5a, 5b) Based on clinical, radiographic, and histopathological examina on, final diagnosis of adenomatoid odontogenic tumor was made

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