TABLE 2.
Intracranial Aneurysm Characteristics Before Surgery
| Ruptured IAs | Unruptured IAs | p value | |
|---|---|---|---|
| Intracranial aneurysm | n = 17 | n = 31 | |
| Location: n (%) | MCA: 11 (65) | MCA: 24 (77.5) | 0.75 |
| ACA: 4 (23) | ACA: 6 (19.5) | ||
| ICA: 1 (6) | ICA: 1 (3) | ||
| Unknown: 1 (6) | |||
| Rough appearance: n (%) | 4 (22) | 14 (45) | 0.33 |
| Presence of blebs or lobules: n (%) | 9 (53) | 18 (58) | 0.75 |
| Neck size, mm: median (IQR) | 3.8 (2.4–4.4) | 3.6 (3.0–5.0) | 0.54 |
| Maximal diameter, mm: median (IQR) | 7.5 (6.2–10.5) | 6.2 (4.5–9.3) | 0.27 |
| Time from rupture to resection: n | <2 days: 10 | NA | – |
| >2 days: 6 | |||
| Unknown: 1 |
Comparisons of medians and percentages have been performed using nonparametric Mann-Whitney U test or Fisher exact test, respectively.
Rough appearance is defined as the presence of submillimetric irregularities.
IQR = interquartile range; ICA= internal carotid artery; MCA = middle cerebral artery; ACA = anterior cerebral arteries, including: anterior cerebral artery, anterior communicating artery (Acom) and pericallosal artery (A2); n, number; NA: not applicable.