Cracking the mysteries: Arteriovenous malformation presenting as proptosis

Arteriovenous malformations (AVMs) are developmental anomalies that occur when the embryonic vascular network fails to differentiate. Proptosis can be caused by both intraorbital and extraorbital AVMs. Digital subtraction angiography (DSA) is essential for the diagnosis and for planning the management of orbital AVMs. In this article, we are discussing two cases of proptosis with AVM as the underlying pathology, but managed by different modes of treatment. Decision on the mode of treatment of AVMs should be taken carefully after weighing the pros and cons.