clinical, radiographic and histological assessments of a rare case of intraosseous arteriovenous malformation in maxilla occurred during pregnancy: a case report

Objective: intraosseous arteriovenous malformation (avm) is a vascular hamartoma with almost 50% ofcases occurring in the head and neck. these lesions are of great importance as they may cause massivebleeding during tooth extraction and surgeries.case report: a 33 year old female complained of swelling and gingival bleeding on the right side of themaxilla and hard palate. the swelling was noticed during pregnancy and the patient underwent asurgical excision 6 months after labor. the specimen was submitted for histological examination. anintraosseous avm presenting in maxilla was diagnosed.conclusion: although rare, intraosseous avm may occur. the role of pregnancy and hormonal changes isstill controversial. clinical, radiographic and histological characteristics of avm should be thoroughlyassessed before surgical excision.