Imaging features of the arteriovenous malformation in maxilla

Mengda Jiang; Xindong Fan; Qiang YU; Minjun Dong; Xiaofeng Tao

Return

Imaging features of the arteriovenous malformation in maxilla

VernacularTitle:上颌骨动静脉畸形的影像学特点
Author: Mengda JIANG ; Xindong FAN ; Qiang YU ; Minjun DONG ; Xiaofeng TAO
Publication Type:Journal Article
Keywords: maxilla; arteriovenous malformation; computed tomography; magnetic resonance imaging
From: Journal of Practical Radiology 2016;32(5):682-685
CountryChina
Language:Chinese
Abstract: Objective To summarize the radiography ,CT and MRI findings of maxillary arteriovenous malformation (AVM ) . Methods Seventeen patients with maxillary AVM underwent panoramic radiography (3 patients) and enhanced MRI examination (6 patients) ,all the patient underwent enhanced CT examination .The clinical manifestation and imaging findings of maxillary AVM ,in‐cluding the location ,shape ,margin ,inner texture ,involvement of adjacent structures ,the density and signal intensity of the lesions , were analyzed .Results The lesions mainly located in molar areas (15/17) .The major clinical manifestation were repeated bleeding and acute bleeding .Other symptoms included swelling of the face ,pulsatile soft mass and anesthesia .The panoramic radiography only showed increased density .According to the change of the maxilla on enhanced CT images ,the lesions could be devided into two types :type Ⅰ ,showed intraosseous osteolytic destruction and cortical expansion (n=12);type Ⅱ ,showed“ground glass”appearance (n=5) .Bone destruction and soft tissue involvement ,widened feeding artery and draining veins ,elevated maxillary sinus were shown in all patients .External jugular vein enlargement and early enhancement (n=14) and root resorption (n= 6) were also detected . Flowing void on T1 and T2 weighted images (type Ⅰ) and hypo‐or isointense on T1WI ,hyperintense on T2WI and obvious enhance‐ment after injecting contrast material (type Ⅱ ) could observed .Conclusion Enhanced CT examination could be primarily recom‐mended and observe the extent of lesions and situation of vessels invaded of maxillary AVM .