Introduction Coil embolization is a major modality for treating intracranial aneurysms: coils protrusion or migration is a possible frightening intra or peri-procedural complication, which need proper treatment to avoid ischemic sequelae.

Case Description A 54 -year-old woman came to the emergency department referring acute onset headache. Emergency brain CT scan showed subarachnoid hemorrhage in the left Silvian scissure and in the peri-mesencephalic cistern.

CT angiography exam was performed, which showed an aneurysm of 3x2 mm of the internal carotid artery at the level of the posterior communicating segment (A-B). A balloon assisted remodeling was performed (C), using a Scepter XC balloon catheter (Microvention) and a 2 x 3 mm Target 360 coil (Striker). After balloon deflation, the coil migrated distally, at the level of the superior left M2 segment (D).

After several attempts, the migrated coil was successfully retrieved with a 4 mm stent-retriever (Trevo - Striker) (E-G).

The aneurysm was then successfully embolized using a 2.5 x 3 mm Target 360 coil (Striker) (F).

The Patient recovered completely within 6 months, without any ischemic sequelae (H).

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Abstract P068 Figure 1

Results In this case the use of a stent-retriever ensured the prompt and successful treatment of a seriues possible complication which may occur during balloon assisted remodeling.

Disclosure of Interest no.