Table 2. The Comparison Between Bilateral Junctional Dilatations in Each Individual Case.
| Patient number | Side of JD | PCA filling from PcomA on ICA angiogram | *Size of PcomA (mm) | Presence of bleb | De novo aneurysm |
|---|---|---|---|---|---|
| 1 | Rt. ICA | Full filling | 0.86 | No | No |
| Lt. ICA | Full filling & more prominent | 1.33 | Yes | Yes | |
| 2 | Rt. ICA | No filling | 0.46 | No | No |
| Lt. ICA | Full filling (Fetal type) | 1.96 | Yes | Yes | |
| 3 | Rt. ICA | Full filling | 0.98 | No | No |
| Lt. ICA | Full filling & more prominent | 1.23 | Yes | Yes |
JD, junctional dilatation; Rt., right; Lt., left; ICA, internal carotid artery; PCA, posterior cerebral artery; PcomA, posterior communicating artery. *The size of PcomA was measured at the most tangential view.