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APPROACHES TO COLLOID
CYST (OF 3RD VENTRICLE)
Hardik
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ANATOMY
• Colloid cyss ar! loca!d i"sid! #!#ird $!"ric%lar ca$iy
• &os o'!" i" is anterior-superiorcompartment.
• T#! upper anterior part o' #! cysis exposed at the foramina ofMonro
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ANATOMY
• ori!"aio" o' #! la"! o' #! 'ora&!" o'Mo"ro*
r!r!s!"!d +y is circ%&'!r!"c!,
I is oblique
Tili"- laterally and anteriorly
&!dial a"d os!rior ars ar! loca!d #i-#!r
#a" #! la!ral a"d a"!rior +ord!rs
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ANATOMY
• T#! 'or"i., #! c#oroid l!.%s, a"d#! $!i"s o' #! $!"o%s a"-l! ar!o'!" dislac!d i" a &a""!r #a
l!ads o enlargement o' #!'ora&!"
• I &ay also +! narrowed or rarely,
practically occluded
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CHOOSIN/ THE TYPE OF S0R/ERY
• S!r!oacic asiraio" * 1i#o% a"y$is%al co"rol
• Co"sis!"cy o' #! cys is "o al1aysr!dica+l! 'ro& i&a-i"-
• Risk o' i"2%ry o ad2ac!" $asc%larsr%c%r!s
• I"co&l!! or 'ail!d asiraio"s ar!r!or!d
• E.cisio" o' #! 1all is "o ossi+l!
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TOTAL O. O!"AT#$T%
&'
COMPLETE ASPIRATION 4
PARTIAL ASPIRATION 56
FAILED ASPIRATION 53
SYMPTOMATICREC0RRENCE
57856, 5984
TIME TO REC0RRENCE ONIMA/IN/
9:MONTHS
TIME TO SYMPTOMATICREC0RRENCE
;9MONTHS
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STEREOPSIS
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$(O%)O"$ M#)*O%)O"$
NON STEREOSCOPIC VISION STEREOSCOPIC VISION
MONOC0LAR VISION
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=HICH IS
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MICROS0R/ICALAPPROACHES
• T#! ra"scoricalBra"s$!"ric%lararoac#
• T#! ra"scallosalBra"s$!"ric%lararoac#
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• T#! &os co&&o"ly %s!d aroac#'or sol!ly i"ra$!"ric%lar l!sio"s isro+a+ly #! ra"scoricalB
ra"s$!"ric%lar aroac#
• D!scri+!d +y Da"dy
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Ad$a"a-!s o' #!ra"scallosal
• A"ao&y is co"sa"
• Disa"c! o 3rd V is s#or!r
•
D!#s o' a"!rior ar ca" +!acc!ss!d
• No corical i"cisio"
•
V!"ricl! si! do!s" &a!r• C#oic! o' ri-# or l!' &o"!ro
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Ad$a"a-!s o' #!ra"scorical
• L!ss c#a"c! o' co&ro&isi"- a"!ss!"ial drai"i"- $!i"s -oi"- o SSS
• L!ss c#a"c! o' i"2%ri"- #!!ricallosal ar!ri!s
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• Tra"scoricalBTra"s$!"ric%larAroac#
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• T#a"k Yo% @
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• T#! disi"cio" +!1!!" &ass!sarisi"- 1i#i" a"d !.a"di"- #!#ird $!"ricl! a"d #os! i&i"-i"-
'ro& o%sid! is i&ora" 'ord!!r&i"i"- #! +!s o!rai$!aroac#
• Ho1 o di!r!"ia! +!1!!" #!1o
Cli"ical8i&a-i"-8a"-io
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• I' #! l!sio" i" #! $ici"iy o' #!a"!rior #ird $!"ricl! is s&all, #!aroac# is +!s d!!r&i"!d +y #!
r!s!"c! or a+s!"c! o' a $is%al !lddis%r+a"c!
• I' #! $!"ricl!s ar! !"lar-!d,
ra"s$!"ric%lar (TV)is +!!r, +%$isio" i"o #! d!# o' a"!rior #ird$!"ricl! is diGc%l 1i# #is,
ra"scallosal (TC) is +!!r 'or #a
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• I' #! $!"ricl!s ar! s&all #!ra"scallosal aroac# is 'ar s%!rior