Coiling for a saccular aneurysm on the caudal channel in double origin of the posterior inferior cerebellar artery

Abstract

Background Double origin of the posterior inferior cerebellar artery (DOPICA) is a rare cranial imaging finding with an incidence of 0.36–6% reported in various retrospective studies. Aneurysms on a DOPICA are even rarer. Case description A 34-year-old women hospitalised for subarachnoid haemorrhage showed a ruptured aneurysm arising from the caudal channel of the DOPICA. Endovascular treatment was selected, and the aneurysm was successfully and completely embolised using two coils. Conclusions To date, a total of three previous saccular aneurysms of the DOPICA itself have been reported, all of which were treated using endovascular methods. Our case is the first report of a ruptured saccular aneurysm arising from the non-branching segment of the caudal channel of the DOPICA.

Endovascular Treatment of an Arteriovenous Malformation Associated with a Double Origin of the Posterior Inferior Cerebellar Artery

“…Interestingly, most of the previous literature reported a DOPICA associated with intracranial aneurysms, especially with vertebral and PICA dissecting aneurysms [1, 7, 8, 12-15], while only 2 cases described an associated saccular aneurysm [16, 17]. The endovascular treatment of these aneurysms associated with a DOPICA has also been reported previously [1, 7, 8, 12, 14, 16-18].…”

“…However, no previous studies reported the presence of this anatomical variation associated with a ruptured AVM in a pediatric patient. The literature reports that navigation through DOPICA channels has been performed previously to treat aneurysms [1, 8, 16, 17], and NBCA was used in 1 case to obliterate a ruptured aneurysm and the parent artery [1]. Moreover, surgical nuances have been reported to perform a correct clipping when a DOPICA was present [13, 15, 19].…”