Abstract
The squamous odontogenic tumor (SOT) is defined as a very rare benign neoplasm, locally infiltrative and can extend to neighboring structures. This study aimed to report a case of SOT unusual involvement. A female patient, 56-year-old, smoker showed mild swelling in the chin region in the portion between the left canine and right first premolar. Axial, coronal and sagittal images showed expansive hypodense lesion in the mandibular symphysis and parasymphysis. Partial removal of the lesion was performed, which led to the diagnosis of SOT. The patient presented no recurrence during 4 years and 2 months follow-up.
Highlights
Squamous odontogenic tumor (SOT) was described for the first time in 1975 by Pullon et al(1), who reported six cases of an oral lesion showing radiolucent area of bone destruction associated with the roots of adjacent teeth
As observed during normal odontogenesis, SOT arises from variable inductive interactions between the odontogenic epithelium and ectomesenchyme, and is the result of neoplastic transformation of epithelial cell rests of Malassez or rests of Serres, and its embryological origin derived from the dental lamina(2-4)
The lesion measured 16.75 mm, 37.25 mm and 20.51 mm in its major axes. In view of this clinical presentation, the initial management adopted consisted of partial removal of the lesion, which led to the diagnosis of SOT
Summary
Squamous odontogenic tumor (SOT) was described for the first time in 1975 by Pullon et al(1), who reported six cases of an oral lesion showing radiolucent area of bone destruction associated with the roots of adjacent teeth. It was only in 1992 that this lesion was described and classified as a distinct pathological entity by the World Health Organization (WHO). The tumor is accidentally discovered on routine dental radiographs, which reveal a generally well-defined, radiolucent, unilocular, triangular-shaped image between or along the roots of adjacent teeth, mimicking severe periodontal bone loss(4, 5). The objective of the present study was to describe the clinical, radiographic and histopathologic features of an uncommon case of SOT involving the mandible
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