TY - JOUR T1 - Bilateral mirror posterior inferior cerebellar artery aneurysms: diagnostic caveat on catheter angiography JF - Journal of NeuroInterventional Surgery JO - J NeuroIntervent Surg SP - 383 LP - 385 DO - 10.1136/jnis.2010.004200 VL - 3 IS - 4 AU - Walter S Lesley Y1 - 2011/12/01 UR - http://jnis.bmj.com/content/3/4/383.abstract N2 - Only three definitive cases of bilateral mirror proximal posterior inferior cerebellar artery (PICA) aneurysms have ever been reported. A fourth example is presented where each PICA aneurysm remained angiographically occult on contralateral vertebral artery angiography despite retrograde filling of the parent vessel PICA. Implications for clinical practice are discussed. ER -