Table 2.
Aneurysms associated with duplicate MCA.
| Case | Study | Age/sex | Presentation | Size (mm) | Morphology | Side | Location of aneurysm | Accompanying intracranial anomalies | Treatment | Postoperative complication | Outcome (GOS) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Stabler et al. (23) | 31/F | SAH | Small | Saccular | R | Origin | An aneurysm at the bifurcation of the left ICA | Clipping | Hydrocephalus | NA/NM |
| 2 | In et al. (24) | 29/F | SAH | Small | Saccular | R | Origin | No | Clipping | No | 5 |
| 3 | Fuwa et al. (7) | 46/F | SAH | Small | Saccular | R | Origin | No | Clipping | No | 5 |
| 4 | Takano et al. (25) | 74/M | Head trauma | 6 | Saccular | R | Origin | No | Clipping | Hydrocephalus | NA/NM |
| 5 | Dong et al. (26) | 50/M | SAH | Small | Saccular | L | Origin | ACA fenestration, ac-MCA | Clipping | No | 5 |
| 6 | Takahashi et al. (27) | 51/F | SAH | Small | Saccular | L | Origin | Contralateral carotid-ophthalmic aneurysm, d-MCA sharing common trunk with fetal PCA | Clipping | No | 5 |
| 7 | 54/M | SAH | Small | Saccular | L | Origin | No | Clipping | Vasospasm | 3 | |
| 8 | Koyama et al. (28) | 28/M | SAH | Small | Saccular | R | Origin | No | Clipping | No | 5 |
| 9 | Nomura et al. (29) | 63/F | Incidental | Small | Saccular | L | Origin | No | Clipping | No | 5 |
| 10 | Tabuse et al. (30) | 34/F | SAH | Small | Saccular | R | Origin | No | Clipping | No | 5 |
| 11 | Imaizumi et al. (31) | 52/M | SAH | Small | Saccular | L | Origin | Contralateral ICA-PComA aneurysm | Clipping | No | 5 |
| 12 | Uchino et al. (32) | 45/F | SAH, ICH | Small | Saccular | L | Trunk | Bilateral ac-MCAs | Clipping | No | 5 |
| 13 | Hori et al. (33) | 67/M | SAH, ICH | Small | Saccular | R | Origin | Ipsilateral ICA-PComA aneurysm | Clipping | Aphasia, hydrocephalus | 3 |
| 14 | 49/M | Incidental | Small | Saccular | L | Origin | BA tip aneurysm | Clipping | No | 5 | |
| 15 | Kai et al. (34) | 63/F | Vertigo | Small | Saccular | L | Origin | No | Clipping and STA-d-MCA anastomosis | No | 5 |
| 16 | Kaliaperumal et al. (35) | 39/F | SAH | <10 | Saccular | L | Origin | No | Clipping | No | 5 |
| 17 | Miyahara et al. (36) | 56/F | Incidental | Small | Saccular | R | Origin | 3 aneurysms at other locations | Clipping | No | 5 |
| 18 | 58/M | Vertigo | 7 | Saccular | R | Origin | Ipsilateral ICA-PComA aneurysm | Clipping | No | 5 | |
| 19 | Otani et al. (37) | 66/F | SAH | 6 | Saccular | R | Origin | Ipsilateral ac-MCA | Clipping | No | 5 |
| 20 | Kimura et al. (38) | 60/F | Incidental | 4 | Saccular | L | Origin | No | Clipping | No | 5 |
| 21 | Takahashi et al. (39) | 62/F | SAH | 4.0 × 4.2 | Saccular | L | Origin | Ipsilateral AChA aneurysm | Coiling | No | 5 |
| 22 | laBored et al. (40) | 34/M | Incidental | 10 | Fusiform | L | Trunk | No | Trapping of the aneurysm and STA-MCA anastomosis | Craniotomy flap infection | 5 |
| 23 | Rennert et al. (41) | 52/F | Recurring headache | 2 | Saccular | L | Origin | Ipsilateral supraclinoid ICA fenestration, AComA aneurysm | Clipping | No | 5 |
| 24 | Elsharkawy et al. (42) | 62/M | Epilepsy | 12 | Saccular | L | Origin | No | Clipping | No | 5 |
| 25 | 55/F | SAH | 3 | Saccular | L | Origin | Contralateral ICA-PComA aneurysm | Clipping | No | 5 | |
| 26 | 49/F | Migraine and double vision | 1 × 2 | Saccular | R | Origin | Contralateral ICA bifurcation aneurysm | Conservative management | NA/NM | NA/NM | |
| 27 | 37/M | Incidental | 1 | Saccular | L | Origin | No | Conservative management | NA/NM | NA/NM | |
| 28 | Kim et al. (43) | 61/F | Headache | 3 | Saccular | R | Origin | No | Clipping | No | 5 |
| 29 | Iida et al. (44) | 41/F | SAH | 5.5 × 6.5 | Saccular | R | Origin | Contralateral ICA-PComA aneurysm | Clipping | No | 5 |
| 30 | 76/F | SAH, ICH | 1.8 × 2.5 | Saccular | R | Origin | Ipsilateral MCA aneurysm | Clipping | Vasospasm, hydrocephalus | 3 | |
| 31 | Miyoshi et al. (45) | 60/F | SAH | Small | Saccular | L | Origin | No | Clipping | Temporary aphasia | 5 |
| 32 | Hayashi et al. (46) | 41/M | SAH | Small | Saccular | NA/NM | Origin | No | Coiling | No | 5 |
| 33 | Mori et al. (3) | 62/M | Alcohol abuse | <5 | Saccular | L | Origin | Ipsilateral ICA bifurcation aneurysm | Conservative management | NA/NM | NA/NM |
| 34 | Tsang et al., (47) | 20/F | SAH | 3.6 × 3.1 | Saccular | R | Origin | Ipsilateral AChA aneurysm | Coiling | No | 5 |
ACA, anterior cerebral artery; AChA, anterior choroidal artery; BA, basialr apex; F, female; GOS, Glasgow Outcome Scale; ICA, internal carotid artery; ICH, intracerebral hemorrhage; L, left; M, male; MCA, middle cerebral artery; NA/NM, not applicable or not mentioned; PCA, posterior cerebral artery; PComA, posterior communicating artery; R, right; SAH, subarachnoid hemorrhage; STA, superficial temporal artery.