Resumo

UCHOA VASCONCELOS, Ana Carolina et al. Intravascular papillary endothelial hyperplasia: Case report. Odontoestomatología [online]. 2025, vol.27, n.45, e422.  Epub 01-Jun-2025. ISSN 0797-0374.  https://doi.org/10.22592/ode2025n45e422.

This study aimed to add to the literature a challenging case of an asymptomatic lesion with a radiolucent appearance in the mandible, mimicking a residual cyst. A 60-year-old woman presented with a mandibular lesion detected during imaging exams. Computed tomography revealed a hypodense lesion with a sclerotic margin measuring approximately 0.8 × 0.8 × 0.7 cm in the right posterior mandible. The main differential diagnosis was a residual cyst, and an excisional biopsy was performed. Microscopic analysis revealed papillary projections and thrombi within the lumen of a vessel lined with endothelial cells. Immunohistochemical analysis was positive for CD34 and smooth muscle actin. Based on these findings, the lesion was identified as intraosseous intravascular papillary endothelial hyperplasia. This case report provides insight into this rare entity as a potential hypothesis for unilocular radiolucency in the jawbones.

Palavras-chave : IPEH; Intravascular papillary endothelial hyperplasia; Masson’s tumor; Jaws; Case report; Vascular lesion.

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