Primordial Odontogenic Tumor: A Decade Post-Description Systematic Review.
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BACKGROUND: Primordial odontogenic tumor (POT) is a rare benign tumor arising from odontogenic epithelium and ectomesenchyme. It typically presents in children and young adults. POT is often found in the posterior mandible and frequently presents as asymptomatic swelling. A systematic review of the literature was conducted to comprehensively analyze the clinicopathologic features of this rare entity over the past ten years. METHODS: A systematic review of POT case series and case reports following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement guidelines was performed. Data on demographics and clinical characteristics, including age, sex, clinical presentation, duration of the lesion, location, and radiographic and histological features, were extracted. A quantitative description of immunohistochemical studies reported in the literature was also performed. Treatment, a follow-up period, and recurrence were collected for analysis. RESULTS: This review included 26 studies involving 36 POT cases. Patients often presented with asymptomatic swelling at a median age of 12 years, with a male-to-female ratio of 1.18:1. The posterior mandible was the most commonly affected site, while three cases were noted in the anterior region exclusively in the maxilla. Most lesions appeared as unilocular radiolucencies with well-defined borders; however, five cases exhibited fine trabeculation or radiopacities. The primary histological features observed in POT included ectomesenchymal stroma lined by columnar cells with nuclear reverse polarity. Most cases were treated through enucleation and curettage (50.0%), followed by tumor excision (36.1%). Only one case demonstrated recurrence among the 29 cases with known follow-up information. CONCLUSION: This study offers comprehensive and current descriptive data on POT, enhancing the ability of clinicians and pathologists to accurately identify these rare lesions and thereby avoid misdiagnosis and inappropriate management.