Ruptured aneurysm of the posterior inferior cerebellar artery communicating artery: A case report.

We report a case of a ruptured aneurysm of the posterior inferior cerebellar artery (PICA) communicating artery, which is an extremely rare condition, with only 10 other cases reported in the literature. We repaired the aneurysm by clipping combined with occipital artery-PICA (cortical segment) bypass. This surgical method reduces hemodynamic stress and may prevent recurrence or new occurrence of aneurysms in this region. We recommend this method for repair of instances of PICA communicating artery aneurysm rupture.