Squamous Odontogenic Tumor: Literature Review Focusing on the Radiographic Features and Differential Diagnosis

Abstract

Since its first publication in 1975, the squamous odontogenic tumor remains the rarest odontogenic lesion, with around 50 cases in the English-language literature in which the microscopic characteristics are frequently very well demonstrated. However, articles which discuss the radiographic aspects are scarce, especially with emphasis on the differential diagnosis. The present treatise proposes an assessment of jaw lesions with the same radiographic characteristics of the squamous odontogenic tumor to clarify the main findings for dental clinicians during routine diagnosis.

Diagnosis and Treatment of an Odontogenic Epithelial Tumor in a Dog With Features of Squamous Odontogenic Tumor

“…The lucent area has a wide base between the diverging apices of the affected tooth roots. 31 The tumor in the present case closely resembled SOT of humans in clinical presentation and behavior and exhibited typical histopathological and radiological features. The dog in the present case presented for routine dental care without evidence of an oral tumor and without apparent pain or discomfort.…”

“…Although SOT is locally invasive, local recurrence is rare and distant metastasis has not been reported. [15][16][17][18]20,31,30 This case illustrates the importance of computed tomography (CT) for tumor excision surgical planning. 24,25,33 In this case, CBCT was utilized.…”

Mandibular squamous odontogenic tumour misdiagnosed as squamous cell carcinoma: a case report and review of literature

“…Squamous odontogenic tumor is a rare odontogenic tumor, since until today no more than 110 cases have been described and confirmed [5,6,8,9,12,13,14]. There is no sex or age predilection, but it seems that the Caucasian race is more frequently involved [12].…”

“…The differential diagnosis based on the clinical and radio-graphic appearance of the tumor includes dentigerous cyst, odontogenic keratocyst, periodontal cyst, radicular cyst, adenomatoid odontogenic tumor, central odontogenic fibroma, hematological disorders, ameloblastoma and more rare other odontogenic tumors or metastasis [2,3,5,9,11,15,16]. It has been found that SOTs located in the maxilla behave more aggressively than in the mandible, due to the anatomy of the area and the porous, medullary nature of the bone.…”

Squamous Odontogenic Tumor of Maxilla - A Rare Case Report

“…Clinically, SOTs present as a slow growing lesion leading to gradual increase in the volume of the maxilla or mandible, tooth mobility and displacement, sometimes ulceration. Radiologically, a broad list of possible diagnoses include developmental or noninflammatory odontogenic cysts, inflammatory odontogenic cysts, odontogenic tumors, hematological disorders, such as Langerhan's cell histiocytosis and multiple myeloma and bone pathology, such as central giant cell lesion and metastasis [7] . The classical radiological finding shows a unilocular and triangular shaped radiolucency of the alveolar bone, with wide base: the radiolucency localized between the diverging apices of the adjacent roots [8] .Grossly the tumor size varies and depends on the duration of the tumor.…”