RESUMEN
Squamous odontogenic tumor (SOT) is a rare benign but locally infiltrative tumor often misdiagnosed as other entities, such as ameloblastoma and squamous cell carcinoma, due to overlapping morphological findings. We document here the clinicopathological and imaging findings of an aggressive intraosseous SOT in the posterior left region of the maxilla in a 25-year-old male patient. On intraoral examination, the tumor extended from the region of the left lateral incisor to the upper left premolar and was covered by reddish mucosa, with discrete areas of ulceration. Imaging exams revealed an osteolytic lesion causing thinning, erosion, and buccal and lingual cortical plate perforation associated with an impacted canine. Microscopically, the tumor showed a proliferation of islands of well-differentiated squamous epithelium in a variably collagenized background. The peripheral cells of the islands were flat or slightly cuboidal and did not exhibit nuclei with peripheral palisade and reverse polarization. The diagnosis of SOT was rendered. The patient underwent surgical resection and has been under clinical follow-up for approximately 12 months with no signs of recurrence. A careful morphological evaluation is essential to avoid misdiagnosis and ensure a satisfactory treatment approach.
Asunto(s)
Ameloblastoma , Tumor Odontogénico Escamoso , Tumores Odontogénicos , Masculino , Humanos , Adulto , Tumor Odontogénico Escamoso/patología , Maxilar/patología , Tumores Odontogénicos/patología , Ameloblastoma/patología , Epitelio/patologíaRESUMEN
We report the first case of bilateral odontogenic lesions consistent with several cases of unifocal adenomatoid odontogenic hamartoma in the literature. The lesions were well circumscribed, unilocular, radiolucent, and located in the region of the third mandibular molar region in a 12-year-old female patient. The lesions were composed of odontogenic hard and soft tissues, dental papilla, dentin, enamel matrix, and adenomatoidlike odontogenic epithelium. The lesions were enucleated with no recurrence at 6 months.