title: Oral hobnail hemangioma--a case report.
abstract: Hobnail hemangioma is a rare benign vascular tumor. It usually develops in young adults as a single, small, well-circumscribed, angiomatous/pigmented, and flat or exophytic lesion and has a distinctive biphasic histopathologic appearance. Lesions commonly affect the trunk and lower and upper extremities, although head and neck involvement has also been described. Until now, only 3 intraoral cases have been reported. The present article reports a case of hobnail hemangioma on the mandibular left gingiva in a 24-year-old male patient. Awareness of this rare entity rests on the differential diagnosis, which includes retiform hemangioendothelioma, patch-stage Kaposi sarcoma, benign lymphangioendothelioma, and well-differentiated angiosarcoma.
authors.affiliation: Department of Oral Pathology and Microbiology, KLES (Karnatak Lingayat Education Society) Institute of Dental Sciences, Belgaum, India. rashmi_metgud@rediffmail.com
authors.forename: Metgud S
authors.initials: MS
authors.lastname: Rashmi
authors.forename: Kale D
authors.initials: KD
authors.lastname: Alka
authors.forename: Charantimath
authors.initials: C
authors.lastname: Seema
mesh_terms: D003937:Diagnosis, Differential; D042783:Endothelial Cells / Q000473:pathology; D005887:Gingival Neoplasms / Q000473:pathology*; D006391:Hemangioma / Q000473:pathology*; D006801:Humans; D008297:Male; D055815:Young Adult