MRMAVERICK
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Question
A 40-year-old truck driver has had difficulty using his side mirrors for traffic behind him. He has never had any major medical problems in the past. He visits an optometrist, who determines that he has bilateral lateral visual field deficits, but his vision is 20/20. A head CT scan reveals slight enlargement of the sella turcica. Which of the following hormones is most likely being secreted in excessive amounts in this man?
A Antidiuretic hormone
B Prolactin
C ACTH
D Growth hormone
E Luteinizing hormone
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| smal
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B
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| sfk
Forum Elite
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Why not C? The person has a bitemporal hemianopsia which indicates a pituitary tumor; the most common cause of which is a basophil adenoma. so excess ACTH will be produced
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| Palaniappan
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I am wondering whether it could be craniopharyngioma-Secreting ADH...(Except for the age)
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| Ancylostoma
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the answer is b, Prolactinoma is the most common pituitary tumor - Goljan notes
Prolactinoma will also cause the inhibition of gnrh , decreasing fsh, and lh. Leading to amenorhea
Edited by Ancylostoma on 12/19/06 - 10:07 PM
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| drplacebo
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Yes its B
since the Q mentions " which is most likely 2 b secreted"
Back 2 incidence & prolactinoma beats others in this regard
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