Distal posterior inferior cerebellar artery (PICA) displacement with end-to-side anastomosis to contralateral PICA: a novel bypass surgery for PICA aneurysm. Illustrative case.

BACKGROUND

Posterior inferior cerebellar artery (PICA) aneurysms pose significant surgical challenges. The authors present a novel bypass technique involving distal PICA displacement and end-to-side anastomosis to the contralateral PICA.

OBSERVATIONS

The authors describe a successful case in which the distal PICA was relocated, followed by an end-to-side anastomosis to the contralateral PICA, effectively bypassing the aneurysm and restoring normal blood flow.

LESSONS

This innovative approach highlights the potential of bypass surgery for PICA aneurysms, particularly when traditional endovascular methods are unsuitable. Individual anatomical considerations are crucial for effective treatment planning. https://thejns.org/doi/10.3171/CASE24741.