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Case Reports
. 2014 Jan;18(1):111-3.
doi: 10.4103/0973-029X.131930.

Mandibular arteriovenous malformation: A rare life-threatening condition depicted on multidetector CT angiography

Amit Nandan Dhar Dwivedi  1 , Anubha Pandey  1 , Ishan Kumar  1 , Arjit Agarwal  1
Affiliations
Case Reports

Mandibular arteriovenous malformation: A rare life-threatening condition depicted on multidetector CT angiography

Amit Nandan Dhar Dwivedi et al. J Oral Maxillofac Pathol. 2014 Jan.

Abstract

Arteriovenous malformation (AVM) of the mandible is a rare and potentially life-threatening condition which can lead to massive hemorrhage. The following is a description where a large mandibular AVM presented with torrential bleeding following tooth extraction for caries. An orthopantomogram (OPG) was performed which was suggestive of aneurysmal bone cyst or ameloblastoma. A computed tomography (CT) angiography revealed a large mandibular AVM with submandibular extension. It is important for both clinicians and radiologist to be aware of this type of lesion that can have life-threatening complications. It is important to define the anatomical location and the feeder vessels of the entity in detail preoperatively. This communication highlights the common differential and use of multidetector CT (MDCT) angiography along with other imaging modalities to prevent a fatal hemorrhage and arrive at a correct diagnosis.

Keywords: Computed tomography angiography; mandibular arteriovenous malformation; radiolucent lytic lesion.

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Conflict of interest statement

Conflict of Interest: None declared.

Figures

Figure 1
Figure 1
Clinical photograph of the patient did not reveal any facial asymmetry
Figure 2
Figure 2
Orthopantomogram showing radiolucent lesion involving left mandibular ramus (white arrow head) with fine septations and soap bubble appearance
Figure 3
Figure 3
Noncontrast bone window settings showing expansile lytic lesion with cortical thinning involving the left mandibular ramus
Figure 4
Figure 4
Sagittal reconstructed computed tomography image showing tortuous arterial feeders (yellow arrow) from left external carotid artery supplying the enhancing mandibular arteriovenous malformation (AVM; white arrow)
Figure 5
Figure 5
CT angiography axial image showing arterial feeders (yellow arrow) from external carotid and tortuous venous channels associated with enhancing AVM (white arrow)
See this image and copyright information in PMC

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