8ihE\lifgj`hl`Xki)''02-.( 1(()$((+
(()
:c`e`ZXc&JZ`\ek`ÔZefk\
8E<LI@JD8;@JK8C;88@:8
;`m`j`fef]E\lifcf^`ZXcJli^\ip#Le`m\ij`kpf]JfGXlcfJZ_ffcf]D\[`Z`e\#JfGXlcfJG#9iXq`c1(D;#G_;#Jlg\im`jfi2D;#)I\j`[\ek2*D;#G_;#;`$ i\ZkfiXe[:_X`idXe
I\Z\`m\[*(AXelXip)''/#i\Z\`m\[`eÔeXc]fid()Efm\dY\i)''/%8ZZ\gk\[)-Efm\dY\i)''/%
;i%<Y\imXc>%=`^l\`i\[fÆIlXFjZXi=i\`i\(+,-&*+$',+'0$'('JfGXlcfJG$9iXj`c%<$dX`c1\Y^X[\c_X7pX_ff%Zfd
8;@JK8C8@:88E<LIPJD
<Y\imXc>X[\c_X=`^l\`i\[f
(#N\cc`e^jfeJ`cmXGX`mX
)#DXef\cAXZfYj\eK\`o\`iX
*8e\lipjdjf]k_\gfjk\i`fi]fjjX_Xm\Y\\ei\gfik$ \[kfXZZflek]fi/kf()f]Xcc`ekiXZiXe`XcXe\lipjdj($*% 8dfe^k_\j\Xe\lipjdj#k_fj\f]k_\[`jkXc8@:8Xek\$ i`fi`e]\i`fiZ\i\Y\ccXiXik\ip Xi\\oZ\\[`e^cpiXi\#]\n\i k_Xe(''ZXj\j_Xm\Y\\ei\gfik\[#n`k_Xi\gfik\[`eZ`$ [\eZ\f]'%(Æ'%,+%F]k_\dXafiXik\i`\jf]k_\gfjk\i`fi ]fjjX#k_\8@:8`jk_\c\Xjkc`b\cpkf_XiYfiXeXe\lipjd,% @eCfZbjc\pËji\m`\nf]k_\]`ijkZffg\iXk`m\Xe\lipjd
jkl[p-#fecpknfZXj\jf]8@:8Xe\lipjdjn\i\]fle[
Xdfe^.0**c\j`fej%JZ_nXikq.i\gfik\[k_\Ôijkjli^`ZXc$ cpki\Xk\[ZXj\f]Xe8@:8Xe\lipjd`e(0+/%J`eZ\k_\e ]\nZXj\jf][`jkXc8@:8Xe\lipjdj_Xm\Y\\ei\gfik\[% N\[\jZi`Y\fe\ZXj\f][`jkXc8@:8Xe\lipjdj_`^_$ c`^_k`e^[`X^efjk`ZXe[k_\iXg\lk`ZelXeZ\j%
:8J<
8]\dXc\#+,p\Xijfc[#nXjYifl^_kkfk_\\d\i^\eZpiffd ]ifdXeflkcp`e^_fjg`kXcn_\i\j_\_X[Y\\eX[d`kk\[X]k\i jl]]\i`e^Xjl[[\efej\kf]j\m\i\_\X[XZ_\#eXlj\X#Xe[mfd$ `k`e^%FeX[d`jj`fe#j_\nXjXc\ikXe[_X[efe\lifcf^`Z]f$ ZXc[\ÔZ`kj%K_\gXk`\ekËjZfe[`k`fenXjZXk\^fi`q\[Xj>iX[\( ?lek$?\jj %8Zfdglk\[kfdf^iXg_p:K jZXe[\dfejkiXk\[ X=`jZ_\i^iX[\@MJ8?n`k_Ycff[j\[`d\ekn`k_`ek_\]flik_ m\eki`Zc\=`^( %=fli$m\jj\c[`^`kXcjlYkiXZk`feXe^`f^iXg_pi\$ m\Xc\[X0dd`e[`Xd\k\ijXZZlcXiXe\lipjdcfZXk\[Xkk_\ d\XkXccffgf]8@:8=`^) %NXj_flkf]k_\ZfekiXjkd\[`ld nXjdXib\[cp[\cXp\[jl^^\jk`e^k_Xkk_\Xik\i`XcYcff[Õfn nXjjcfn`ek_\Xe\lipjdjXZ=`^) %
8Zfem\ek`feXci\kifj`^df`[XggifXZ_nXjZXii`\[flk%8k jli^\ip#X[`jkXc8@:8Xe\lipjdnXjj\\egfjk\i`ficpkfk_\j\m$ \ek_Xe[\`^_k_ZiXe`Xce\im\j#ZXlj`e^[`jgcXZ\d\ekf]k_\iffk$ c\kjf]k_\@OZiXe`Xce\im\=`^* %K_\Xe\lipjdjXZgi\j\ek\[ m\ipk`epnXcc#i\j\dYc`e^Xgj\l[fXe\lipjd#Xe[efXe\lipjd e\ZbnXj`[\ek`Ô\[=`^j*Xe[+ %K_\cXYpi`ek_`e\Xik\ipnXj`e$ [`m`[lXc`q\[=`^j*Xe[+ Xe[k_\Xe\lipjdnXjkiXgg\[lj`e^ knfXe\lipjdZc`gj=`^+ %;l\kfk_\`ek`dXk\i\cXk`fej_`gjn`k_ k_\iffkc\kjf]k_\@OZiXe`Xce\im\#k_\Xe\lipjdjXZnXjefk`e$ Z`j\[gi\Zcl[`e^X_`jkfgXk_fcf^`Z[`X^efj`jf]Xgj\l[fXe\l$ ipjd%Gfjkfg\iXk`m\cp#k_\gXk`\eknXje\lifcf^`ZXccp`ekXZkn`k_ ef[\ÔZ`kj\`k_\i`ek_\_\Xi`e^ficXYpi`ek_`e\]leZk`fe%
J_\_XjZfej\ek\[n`k_k_`jglYc`ZXk`fe%
=`^(%:KjZXej_fn`e^X=`j_\i^iX[\@MjlYXiXZ_ef`[_\dfii_X^\% Efk`Z\Ycff[n`k_`e@Mm\eki`Zc\%
8ihE\lifgj`hl`Xki)''02-.(
((*
8@:81[`jkXcXe\lipjd =`^l\`i\[f\kXc%
;@J:LJJ@FE
@eXi\Z\ekc`k\iXkli\i\m`\n#`knXj]fle[k_Xk/(gX$ k`\ekj_X[/+g\i`g_\iXc8@:8Xe\lipjdj#`eZcl[`e^k_i\\ gXk`\ekjn`k_dlck`gc\[`jkXc8@:8Xe\lipjdj/$('%G\i`g_$ \iXc8@:8Xe\lipjdjfZZlii\[gi\[fd`eXekcp`enfd\e ,(nfd\e#)(d\e#('j\olebefne 2gXk`\ekX^\jiXe^\[ ]ifd(.Æ/(p\Xijd\Xe+/%)p\Xij #n`k_.-%)f]Xe\l$ ipjdjcfZXk\[`ek_\d\XkXcj\^d\ekf]k_\8@:80%
K_\XeXkfdpf]k_\8@:8`j_`^_cpmXi`XYc\(($(+%Kpg`$ ZXccp#k_\Xik\ipXi`j\j]ifdk_\aleZk`feY\kn\\ek_\d`[$ [c\Xe[cfn\ik_`i[jf]k_\YXj`cXiXik\ip#Zflij\jXcfe^ k_\gfejXe[k_\d`[[c\Z\i\Y\ccXig\[leZc\kfn_`Z_`k ^`m\jX]\ng\i]fiXk`e^YiXeZ_\j #k_\eY`]liZXk\j`ekfknf dXafiYiXeZ_\j#ZXcc\[k_\ifjkif cXk\iXcYiXeZ_Xe[k_\
ZXl[f d\[`XcYiXeZ_%K_\ifjkifcXk\iXcYiXeZ_Zflij\j Zcfj\kfk_\j\m\ek_Xe[\`^_k_ZiXe`Xce\im\Zfdgc\o Xe[^`m\jf]]k_\cXYpi`ek_`e\#fi`ek\ieXcXl[`kfipXik\ip% @k`jXkk_`jgf`ekk_Xkdfjkg\i`g_\iXc8@:8Xe\lipjdj Xi\cfZXk\[,#0#(+#(,%K_\ZXl[fd\[`XcYiXeZ_#`en_`Z_Xe\l$ ipjdjXi\j\\efecpiXi\cp#Zflij\jd\[`XccpZcfj\kfk_\ gfej#kfn_`Z_`kj\e[jX]\ng\i]fiXkfij#Xe[k\id`eXk\j `eZ\i\Y\ccXiYiXeZ_\j%GXk`\ekjn`k_k_\j\Xe\lipjdjdXp gi\j\ekXZlk\cpn`k_J8?fin`k_jpdgkfdjf]XdXjjc\$ j`fe`ek_\Z\i\Y\ccf$gfek`e\Xe^c\:G8 #`eZcl[`e^_\Xi$ `e^cfjj#m\ik`^f#k`ee`klj#]XZ`Xcn\Xbe\jj#[`gcfg`X#XkXo`X# fiXck\i\[]XZ`Xcj\ejXk`fe%
K_\fm\iXccdXeX^\d\ekf][`jkXc8@:8Xe\lipjdj`e$ Zcl[\jniXgg`e^#gifo`dXcfZZclj`fe#kiXgg`e^#`ekiXmXjZl$ cXi\dYfc`qXk`fen`k_Zf`cj#Xe[[`i\Zkjli^`ZXcZc`gg`e^%@e Xi\m`\nf]k_\c`k\iXkli\#efj`e^c\`ek\im\ek`fegifm\[ dfi\jlZZ\jj]lck_XeXepfk_\i`ei\m\ij`e^gi\fg\iXk`m\ [\ÔZ`kjfigi\m\ek`e^gfjkfg\iXk`m\[\k\i`fiXk`fe`ek_\ ]leZk`fef]ZiXe`Xce\im\jM@@Xe[M@@@%K_\c`d`k\[XmX`c$ XYc\`e]fidXk`fejl^^\jkjXm\ipcfn`eZ`[\eZ\f]`jZ_\d`Z Zfdgc`ZXk`feji\cXk\[kfkiXgg`e^[`jkXc8@:8Xe\lipjdj Zcfj\kfk_\@8:`ek\ieXcXl[`kfipZXeXc #gXik`ZlcXicp`] j\m\ek_Xe[\`^_k_ZiXe`Xce\im\[pj]leZk`fe`jgi\j\ek gi\fg\iXk`m\cp%?fn\m\i#k_\c`k\iXkli\fe[`jkXc8@:8Xe$ \lipjdjjlggfikjk_\efk`fek_XkcfZXk`fef]k_\c\j`fe e\Xik_\@8:`jXe\^Xk`m\gif^efjk`Z]XZkfi]figfjkfg\iX$ k`m\j\m\ek_Xe[\`^_k_ZiXe`Xce\im\]leZk`fe%
K_\dfjkZfddfeki\Xkd\ek]fi[`jkXc8@:8Xe\l$ ipjdj`j\`k_\iZc`gg`e^fikiXgg`e^%KiXgg`e^`jljlXccp n\cckfc\iXk\[2k_\i\Xi\]\ni\gfikjf]`eZi\Xj\[gfjkfg$ \iXk`m\e\lifcf^`Z[\ÔZ`kj%?fn\m\i#m\jj\ci\gX`ifiYp$ gXjjj_flc[Y\Zfej`[\i\[`ej\c\Zk\[ZXj\j#p\k`knflc[ Y\X[`]]`Zlckk\Z_e`ZXc\o\iZ`j\`ek_`jcfZXk`fen`k_X m\jj\cj\^d\ekf]k_`j[`Xd\k\i(+%Jfd\Xlk_fij\ogi\jj ZfeZ\iek_Xkc`^Xk`fefi\e[fmXjZlcXifZZclj`fef]k_\ 8@:8dXpc\X[kf`jZ_\d`XYpi\kif^iX[\k_ifdYfj`jf] k_\kilebf]8@:8#i\jlck`e^`e`dgX`i\[Ycff[jlggcpkf k_\cXk\iXcd`[[c\Xe[cfn\ik_`i[f]k_\gfejXe[cXk\iXc lgg\ik_`i[f]k_\d\[lccX('%K_\i\]fi\#jg\Z`XcXkk\ek`fe j_flc[Y\\o\ik\[kf`[\ek`]pYiXeZ_\jf]k_\8@:8Xe[ k_\`iXeXjkfdfj\jn`k_k_\J:8Xe[G@:8/%
FliXe\lipjdgi\j\ek\[]\Xkli\jf]Xgj\l[fXe\l$ ipjd#jlZ_Xj[\cXp\[nXj_flkXe[cfn]cfn#XYj\eZ\ f]Xn\cc[\Ôe\[e\ZbXe[k`epnXccj%?fn\m\i#XjX_`j$ kfgXk_fcf^`Z\oXd`eXk`fenXjefkgfjj`Yc\#k_\Xlk_fij dXpefk[iXnZfej`[\iXk`fej`ek_`jZfeZ\ie%=lik_\idfi\# fk_\iZXj\jf][`jkXc8@:8Xe\lipjdjn`k_[\cXp\[nXj_ flk_Xm\Y\\ei\gfik\[%
@eZfeZclj`fe#j`eZ\k_\c`k\iXkli\fe[`jkXc8@:8Xe$ \lipjdj`jjZXiZ\#`k`j[`]ÔZlckkfZi\Xk\^l`[\c`e\j]fi dXeX^\d\ekYXj\[fejf]\nZXj\j%Fli^\e\iXcXggifXZ_ =`^*%D`Zifjli^`ZXcm`\nkifl^_Xi\kifj`^df`[XggifXZ_%8e\lipjd
8E dXpY\`[\ek`Ô\[e\XiZiXe`Xce\im\M@@:EM@@ %J\^d\ekjf] 8@:8[`jkXcXe[gifo`dXckfk_\Xe\lipjddXpY\m`jlXc`q\[%CXY`i$ `ek_pe\Xik\ipC8 `j[`jj\Zk\[gifo`dXckfk_\Xe\lipjd%:EM2ZiX$ e`Xce\im\M2:E@OXe[O2ZiXe`Xce\im\j@OXe[O%
8ihE\lifgj`hl`Xki)''02-.(
((+
8@:81[`jkXcXe\lipjd =`^l\`i\[f\kXc%
`jkfj\c\Zkd`Zifjli^`ZXc`ek\im\ek`feXjXÔijkZ_f`Z\# [\g\e[`e^fek_\Xe\lipjdËjcfZXk`fe#j`q\#Xe[ZfeÔ^liX$ k`fe#Xjn\ccXjk_\gXk`\ekËjfm\iXccZc`e`ZXcZfe[`k`fe%:li$ i\ekcp#fecpd`Zifjli^`ZXc`ek\im\ek`fe_Xjk_\gfk\ek`Xc kfg\idXe\ekcpfYc`k\iXk\k_\j\[`jkXc8@:8Xe\lipjdj n_`c\gi\j\im`e^k_\gXi\ekXik\ip%
I<=<I<E:<J
1. Duvoisin RC, Yahr MD. Posterior fossa aneurysms. Neurology 1965;15: 231-241.
2. McDonald CA, Korb M. Intracranial aneurysms. Arch Neurol Psych 1939;42:298-328.
3. Weibel J, Fields WS, Campos RJ. Aneurysms of the posterior cervico-cranial circulation: clinical and angiographic considerations. J Neuro-surg 1967;26:223-234.
4. Kamano S, Kirino T, Mizuno S. Intrameatal aneurysm. Neurochiruru-gia 1986;29:28-30.
5. Mizushima H, Kobayashi N, Yoshiharu S, et al. Aneurysm of the dis-tal anterior inferior cerebellar artery at the medial branch: a case report and review of the literature. Surg Neurol 1999;52:137-142.
6. Locksley HB. Natural history of subarachnoid hemorrhage, intracrani-al aneurysms and arteriovenous mintracrani-alformations: based on 6368 cases in the cooperative study. J Neurosurg 1966;25:219-239.
7. Schwartz HG. Arterial aneurysm of the posterior fossa. J Neurosurg 1948;5:312-316.
8. Andaluz N, Pensak ML, Zuccarello M. Multiple, peripheral aneu-rysms of the anterior inferior cerebellar artery. Acta Neurochir (Wien) 2005;147:419-422
9. Kyoshima K, Matsuda M, Handa J. Cerebral aneurysm of the distal anterior inferior cerebellar artery: case report. Nippon Geka Hokan 1995;64:139-145.
10. Nishimoto A, Fujimoto S, Tsuchimoto S, Matsumoto Y, Tabuchi K,Higashi T. Anterior inferior cerebellar artery aneurysm: report of three cases. J Neurosurg 1983;59:697-702.
11. Woischneck D, Hussein S. The anterior inferior cerebellar artery (AICA):
FOLQLFDODQGUDGLRORJLFDOVLJQLÀFDQFH1HXURVXUJ5HY
12. Figueiredo EG, Zabramski JM, Deshmukh P, Crawford NR, Preul MC, Spetzler RF. Anatomical and quantitative description of the transcav-ernous approach to interpeduncular and prepontine cisterns: technical note. J Neurosurg 2006;104:957-964.
13. Figueiredo EG, Zabramski JM, Deshmukh P, Crawford NR, Spetzler RF, Preul MC. Comparative analysis of anterior petrosectomy and transcav-ernous approaches to retrosellar and upper clival basilar artery aneu-rysms. Neurosurgery 2006;58(Suppl 1):S13-S21.
14. Gonzalez LF, Alexander MJ, McDougall CG, Spetzler RF. Anteroinferi-or cerebellar artery aneurysms: surgical approaches and outcomes. A review of 34 cases. Neurosurgery 2004;55:1025-1035.
