title: Imaging features of an intraosseous arteriovenous malformation in the tibia.
abstract: Primary intraosseous arteriovenous malformations (AVMs) are rare and have only been occasionally reported. We herein report a histologically proven case of primary intraosseous AVM in the tibia, which mimicked a fibrous tumour on radiography. This presentation carries a risk of triggering acute large haemorrhage through unnecessary biopsy. In intraosseous AVM, the magnetic resonance (MR) imaging features typical of a soft tissue AVM are absent, making diagnosis difficult. In this report, peculiar MR features in the presence of a connecting vessel between the normal deep venous system of the lower extremity and the tumour provide a clue for the early diagnosis of primary intraosseous AVM.
authors.forename: Hong-Hau
authors.initials: HH
authors.lastname: Wang
authors.forename: Tsu-Te
authors.initials: TT
authors.lastname: Yeh
authors.forename: Yu-Chun
authors.initials: YC
authors.lastname: Lin
authors.affiliation: Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, No 325, Sec 2, Cheng-Kung Road, Neihu 114, Taipei, Taiwan, Republic of China. gsh5@seed.net.tw.
authors.forename: Guo-Shu
authors.initials: GS
authors.lastname: Huang
mesh_terms: D001165:Arteriovenous Malformations / Q000000981:diagnostic imaging / Q000503:physiopathology*; D001706:Biopsy; D003287:Contrast Media / Q000737:chemistry; D005260:Female; D006470:Hemorrhage; D006801:Humans; D008279:Magnetic Resonance Imaging; D010146:Pain; D011859:Radiography; D013667:Technetium / Q000737:chemistry; D013977:Tibia / Q000503:physiopathology*; D051598:Whole Body Imaging; D055815:Young Adult
chemical_list: D003287:Contrast Media; D013667:Technetium