mahendra
Forum Guru
Topics: 173
Posts: 419
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52 yr male brought into emergency room by his wife because he has been complaining of severe headache physical exam reveals ptosis of the rt eye facing down and out there is fixed and dilated rt pupil with inability to accommadate. subarachnoid blood appears on noncontarst CT scan, MRA would be expected to reveal an aneurysm of which of the vessels?
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| manjunath_hari
Forum Newbie
Topics: 0
Posts: 6
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possibly the anterior communucating artery
aneurysm compressing the optic tract
i,m not very sure
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| meg
Forum Guru
Topics: 62
Posts: 806
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it is posterior communicating artery (2nd commonest for berry aneurysm). It is compressing over the III (Oculomotor) nerve and hence ocular findings. Eye is turned to right because of unopposed Lateral rectus (abducent). All other signs ptosis and loss of accomodation is due to III Nerve palsy.
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u r correct my mistake
thank u
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| meg
Forum Guru
Topics: 62
Posts: 806
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with the step 1 stressing more on neuro, I found this good website (neuropath for medical students and residents)
http://www.akronchildrens.org/neuropathology/
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| thinzar
Forum Newbie
Topics: 0
Posts: 1
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thank u so much for the website
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SMILE!!!
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| sunny
Forum Junior
Topics: 4
Posts: 43
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just to add to the beauitful explanation by Meg, this part of neuro is given very succintly in nms neuroanat also.
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Gurvinder Singh
India.
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