Angiographic difference according to the location of the acute hemorrhage in adult MMD
| Variables | D-ICH or IVH (n = 82) | L-ICH (n = 14) | P Value |
|---|---|---|---|
| ACA occlusion | 74 (90.2) | 9 (64.3) | .009 |
| MCA occlusion | 70 (85.4) | 11 (78.6) | .45 |
| PCA occlusion | 18 (22.0) | 3 (21.4) | .99 |
| Ethmoidal Moyamoya | 39 (47.6) | 5 (35.7) | .41 |
| Fetal-type PCA | 46 (56.1) | 6 (42.9) | .36 |
| PCA collateral | 69 (84.1) | 11 (78.6) | .69 |
| PcomA collateral | 6 (7.3) | 1 (7.1) | .99 |
| ECA collateral | 44 (53.7) | 5 (35.7) | .21 |
| Aneurysma | 5 (6.1) | 2 (14.3) | .27 |
Note:—Ethmoidal Moyamoya, fetal-type PCA, PCA collateral, PcomA collateral, and ECA collateral indicate the development of ethmoidal Moyamoya vessels, enlargement of PcomA or showing blood supply to PCA territories through PcomA, leptomeningeal collateral vessels from PCA to ACA or MCA territories, collateral flow from PCA to ICA through PcomA, and transdural anastomosis from ECA to ICA, respectively.
D-ICH indicates deep intracerebral hemorrhage; L-ICH, lobar intracerebral hemorrhage; PcomA, posterior communicating artery.
↵a Two aneurysms were identified simultaneously in 1 patient in the D-ICH or IVH group.