Rescue balloon-assisted remodeling technique for protrusion of coil loop: A case report

RATIONALE: Among the possible complications during endovascular embolization of intracranial aneurysms, coil protrusion into the parent artery is associated with parent artery occlusion or thromboembolic of the distal arteries. There is no clearly established management strategy for coil protrusion. This report demonstrates our experience with balloon-assisted remodeling to reposition a protruded coil loop. PATIENT CONCERNS: A 53-year-old man was admitted to our hospital with severe bursting headache, nausea, and vomiting. Computed tomography showed subarachnoid hemorrhage and digital subtraction angiography revealed an anterior communicating artery aneurysm. We decided to obliterate the aneurysm with endovascular embolization using detachable coils DIAGNOSIS: A small loop protruded into the parent artery during the removal of the microcatheter. INTERVENTIONS: We performed successful repositioning of the protruded coil loop using balloon inflation. CONCLUSION: The rescue balloon-assisted remodeling technique was useful in the management of protrusion of a small coil loop into the parent artery during endovascular coil embolization of an intracranial aneurysm. The procedure was associated with minimal complications.