Table 3:
Variables | LAI Versus HI or PI |
P Value | Anterior Versus Posterior |
P Value | ||
---|---|---|---|---|---|---|
LAI (n = 37) | HI or PI (n = 48) | Anterior Circulation (n = 57) | Posterior Circulation (n = 28) | |||
ACA occlusion | 30 (81.1) | 26 (54.2) | .009 | 33 (57.9) | 23 (82.1) | .027 |
MCA occlusion | 31 (83.8) | 30 (62.5) | .031 | 39 (68.4) | 22 (78.6) | .32 |
PCA occlusion | 18 (48.6) | 9 (18.8) | .003 | 11 (19.3) | 16 (57.1) | <.001 |
Ethmoidal Moyamoya | 12 (32.4) | 14 (29.2) | .74 | 13 (22.8) | 13 (46.4) | .026 |
Fetal-type PCA | 12 (32.4) | 18 (37.5) | .63 | 21 (36.8) | 9 (32.1) | .67 |
PCA collateral | 23 (62.2) | 44 (91.7) | .001 | 47 (82.5) | 20 (71.4) | .24 |
PcomA collateral | 3 (8.1) | 2 (4.2) | .65 | 3 (5.3) | 2 (7.1) | .72 |
ECA collateral | 16 (43.2) | 13 (27.1) | .12 | 12 (21.1) | 17 (60.7) | <.001 |
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.
PcomA indicates posterior communicating artery.