Studies that reported long-term aneurysm rupture following endovascular therapy
| Author, Year | Number of Patients with Long-Term Aneurysm Rupture Posttreatment | Location of Long-Term Aneurysm Rupture Posttreatment | Reason for Rupture |
|---|---|---|---|
| Kaku et al, 199915 | 1 | Anterior (n = 1) | Incomplete occlusion followed by aneurysmal recanalization and regrowth 15 months after IDC embolization on carotid angiogram. Patient had subarachnoid hemorrhage at 15 months after treatment and died. |
| Johnston et al, 200016 | 3 | Not explicitly reported (n = 3) | Rupture caused by incomplete occlusion for technical reasons leading to delayed subarachnoid or intracranial hemorrhage during a mean follow-up duration of 3.8 years. Two patients refused follow-up angiography despite new compressive symptoms. In the third patient, only a small portion of the aneurysm could be treated, and surgical clipping was refused. |
| Terada et al, 200520 | 1 | Posterior (n = 1) | Bilateral posterior cerebral arteries were left patent after aneurysm embolization. Fatal rupture of large basilar tip aneurysm at 28 months due to no follow-up visits and died the day before admission from a massive subarachnoid hemorrhage. |
| Im et al, 200912 | 1 | Anterior (n = 1) | Rupture occurred 18 months after complete coil embolization of a 5-mm MCA bifurcation aneurysm. The patient was lost to clinical follow-up after initial coil embolization, which was later on completely occluded by second coil embolization. The patient had a good recovery without neurologic deficits. |
| Pyysalo et al, 201328 | 3 | Anterior (n = 2) Not explicitly reported (n = 1) | Delayed ruptures during mean follow-up duration of 13 years. First patient with 20-mm, incompletely coiled MCA aneurysm with no follow-up due to age of 65 years. Second patient with 4-mm, completely coiled MCA aneurysm with some follow-up and rupture a couple of years later. The data were not found for the third patient. |
| Mine et al, 201429 | 1 | Not explicitly reported (n = 1) | Delayed rupture during mean follow-up duration of 2.2 years because of incomplete coiling and refusal of further treatment. |
| Petr et al, 201632 | 1 | Anterior (n = 1) | Delayed rupture of large MCA aneurysm and death during a mean follow-up duration of 1.7 years. |
| Koyanagi et al, 201814 | 1 | Posterior (n = 1) | Rupture of a large (14-mm) basilar bifurcation aneurysm at 21 months. |
| Total | 12 |
Note:—IDC indicates interlocking detachable coils.