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Official Journal of the
Indexed/Abstracted in: CAB, EMBASE, Index to Dental Literature, PubMed/MEDLINE, Scopus
Online ISSN 1827-174X
Vieira Cury S. E. 1, Chain Hartung Habibe R. 1, Siroteau Corrêa Pontes F. 1, Rebelo Pontes H. A. 1, Santos De Freitas Silva B. 1, Dos Santos Pinto Jr. D. 1
1 Department of Oral Pathology, Dental School, UniFOA – University of Volta Redonda, Rio de Janeiro, Brazil;
2 Department of Stomatology (Oral Pathology), Dental School, University of São Paulo, São Paulo, Brazil
Hobnail hemangioma (HH) is a rare benign vascular neoplasm reported as a distinctive small benign, solitary vascular neoplasm of the superficial and mid-dermis occurring on the face, trunk, or extremities of young or middle-aged adults. The oral manifestations are quite uncommon, with only three cases reported in the English language literature. The following case refers to a 38-year-old woman with a small nodule on the hard palatal mucosa. Histological findings showed a biphasic growth pattern of irregularly dilated vascular structures in the superficial mucosa, lined by epithelioid endothelial cells with a hobnail appearance, with neoplastic vessels observed in deeper parts of the lesion. In the oral cavity, the differential diagnosis includes hemangioma, melanoma, and Kaposi’s sarcoma, whose clinical and histological features may be confused with those of HH.