TY - JOUR T1 - Reply to: Occipital artery: a not so poor artery for the embolization of lateral sinus dural arteriovenous fistulas with Onyx JF - Journal of NeuroInterventional Surgery JO - J NeuroIntervent Surg DO - 10.1136/neurintsurg-2015-011830 SP - neurintsurg-2015-011830 AU - Albert Ho Yuen Chiu AU - Grace Elizabeth Aw AU - Jason David Wenderoth Y1 - 2015/05/29 UR - http://jnis.bmj.com/content/early/2015/05/29/neurintsurg-2015-011830.abstract N2 - We thank the authors for their letter in regards to our article.1 We would like to offer the following replies: We agree the middle meningeal artery (MMA) is usually, in a non-pathological state, smaller than the occipital artery. However, with increased flow demand (such as that created by a dural fistula), vessels can enlarge. This was demonstrated in our patient (in figure 2 of our article), where the posterior branch of the MMA is essentially the same size as the occipital artery. … ER -