We report two case of wide-necked internal carotid-posterior communicating (IC-Pcom) artery aneurysm treated by antegrade PcomA to distal ICA stenting technique. A 65-year-old female was diagnosed with an unruptured left IC-PcomA artery aneurysm (maximum diameter: 13.4 mm, neck diameter 6.7mm). The PcomA artery branched from the aneurysm dome’s anterior part, and no P1 segment was visualized on the vertebral angiogram. A microcatheter was guided in antegrade fashion to fetal type PCA. A Neurofrom Atals stent was deployed from PCA to distal ICA successfully. Second case, 63-year-old male was diagnosed with an unruptured left IC-PcomA artery aneurysm. PcomA was shared with aneurysm neck and no P1 segment was visualized on the vertebral angiogram. The same technique was applied in the previous case. Stenting from PcomA to distal ICA can be an effective alternative during fetal type PcomA aneurysm treatment, especially in case of no P1 segment is visualized.

Disclosures S. Sheen: None.