Presentation
Owner recently noticed a mass under the right orbit.
Patient Data
Age: 11 years
Gender: Spayed female
Category: Domestic dog
Organism: Labrador retriever
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There is an expansile lesion within the right maxillary bone and temporal process of the zygomatic bone. This lesion involves the tooth roots of the right maxillary first molar. The right maxillary fourth premolar is absent, and is likely secondary to the mass.
Case Discussion
This was a presumed ameloblastoma from the imaging characteristics. These tumors of odontogenic origin tend to be locally invasive but not metastatic. The expansion of bone suggests a slow-growing mass that has benign characteristics. In this case, surgical excision would have required enucleation to obtain clean margins, so was not pursued.
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