Clinical and aneurysm characteristics of 51 patients with 53 aneurysms with angiographic follow-up
| No. of patients | 51 |
| Sex | |
| Female | 34 |
| Male | 17 |
| Age (y) | |
| Mean | 52.1 |
| Minimum | 11 |
| Maximum | 77 |
| No. of treated aneurysms | 53 |
| Unruptured aneurysms (%) | 31 (58) |
| Incidental | 22 (42) |
| Mass effect | 4 (8) |
| Previous SAH | 4 (8) |
| Seizure | 1 (2) |
| Ruptured aneurysms (%) | 22 (42) |
| Hunt and Hess grade (%) | |
| I | 6 (11) |
| II | 5 (9) |
| III | 7 (13) |
| IV | 4 (8) |
| V | 0 (0) |
| Aneurysm location (%) | |
| Anterior | 43 (81) |
| Cavernous | 0 (0) |
| Ophthalmic | 6 (11) |
| Paraophthalmic | 5 (9) |
| PcomA | 17 (32) |
| AchoA | 0 (0) |
| ICA bifurcation | 2 (4) |
| ACA | 1 (2) |
| AcomA | 5 (9) |
| MCA | 7 (13) |
| Posterior | 10 (19) |
| VB junction | 0 (0) |
| PICA | 0 (0) |
| Basilar trunk | 1 (2) |
| SCA | 0 (0) |
| Basilar tip | 8 (15) |
| PCA | 1 (2) |
| Aneurysm size | |
| S/S | 23 |
| S/W | 7 |
| Large | 22 |
| Giant | 1 |
| HydroCoil % length | |
| Range | 16.7%–100% |
| Average | 51.0% |
Note:—SAH indicates subarachnoid hemorrhage; PcomA, posterior communicating artery; AchoA, anterior choroidal artery; ICA, internal carotid artery; ACA, anterior cerebral artery; AcomA, anterior communicating artery; MCA, middle cerebral artery; VB, vertebrobasilar; PICA, posterior inferior cerebral artery; SCA, superior cerebral artery; PCA, posterior cerebral artery; SIS, small size (<10 mm)/narrow-necked (<4 mm); S/W, small size/wide-necked (>4 mm); Large, >10–25 mm; Giant, >25 mm.