USMLE Forum Archives - USMLE Step 1 - cns 2
cns 2
conym5 - 11-25-09 11:34
a 28 year old lady has complaints of headaches, which had been increasing in severity over the past several months. Recently, she became aware of difficulty with her peripheral
vision. Thinking that she might be pregnant, she sought the attention of
her gynecologist..
What type of neurologic visual loss can cause a loss of peripheral
vision?
conym5 - 11-25-09 11:34
a 28 year old lady has complaints of headaches, which had been increasing in severity over the past several months. Recently, she became aware of difficulty with her peripheral
vision. Thinking that she might be pregnant, she sought the attention of
her gynecologist..
What type of neurologic visual loss can cause a loss of peripheral
vision?
The correct answer and explanation will be available after you answer.
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#2
Re: cns 2
conym5 - 11-25-09 18:27 pituitary tumor is common for this tumor’s symptoms to be manifested during the
child-bearing years. The visual problem is called bitemporal hemianopsia.
Since the pituitary gland is in very close proximity to the optic chiasm,
pituitary tumors often invade this structure.
#14
Re: cns 2 richie - 01-07-10 10:41 My answer is: c.
I think she suffered from pituitary tumour,
In this case , optic chiasma is damaged by the tumour , she lost peripheral vision
#32
Re: cns 2 babbu5508 - 05-17-10 17:47 My answer is: c.
pituitary adenoma..The anatomy of this structure causes pressure on it to produce a defect in the temporal visual field on both sides, a condition called bitemporal hemianopia. Lateral expansion of a pituitary adenoma can also compress the abducens nerve, causing a lateral rectus palsy.
#34
Re: cns 2 bingousmle - 05-18-10 00:28 My answer is: c.
Since the pituitary gland is in very close proximity to the optic chiasm, pituitary tumors often invade this structure resulting in bitemporal hemianopsia.....
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