Quote from Article

Here’s what I read, “CCM lesions are commonly associated with developmental venous anomalies (DVA) also called, venous malformations or venous angiomas. A DVA is a type of vascular malformation that, on its own, does not cause any clinical symptoms. However, when found in combination with a CCM lesion, the DVA complicates the option for surgical intervention because disturbing the DVA during surgery could cause a venous infarction.” found this in an article on web MD, what are the chances? Can someone knowledgeable about this enlighten me?