nico-
Forum Newbie
Topics: 2
Posts: 11
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4-year old boy got hit by an arrow in the sternum.
What structure is just behind the sternum in the superior mediastinum.
a.thymus.
b.trachea
c.heart
d.arch of the aorta
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| Chrales
Forum Newbie
Topics: 2
Posts: 30
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D arch of the aorta
A ..is in anterior mediastinum
B..isn't in the mediastinum (its above)
C..is in the middle mediastinum
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| nico-
Forum Newbie
Topics: 2
Posts: 11
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To be honest with you, i don't have the answer, some one said this was from the real exam.
Since this is a kid, I think it's A . It's in the sup mediastinum behind the manubium.
Any other opinion?
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| spjokes
Forum Senior
Topics: 3
Posts: 88
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A- THYMUS
From anterior to posterior there are five planes in superior mediastinum
1. glandular plane - Thymus, (fat in adults with little islets of active thymus left)
2. venous
3. arterial
4. visceral
5. lymphatic
DONT MISS TO SEE THIS SITE
http://mywebpages.comcast.net/wnor/thoraxlesson6....
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| young_doc
Forum Guru
Topics: 55
Posts: 732
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agree with all except with Chrales.
"B..isn't in the mediastinum (its above) "
The trachea is in the mediastinum! It's just not the answer because it's not immediately behind the sternum.
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| muzammil
Forum Guru
Topics: 16
Posts: 663
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i wud have clicked on thymus
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| nico-
Forum Newbie
Topics: 2
Posts: 11
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thanks spjokes
good web page.
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| drbcshah
Forum Elite
Topics: 48
Posts: 227
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THere is a clue in age- 4 year old - Thymus
Adult - Arch of Aorta will be the answer
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| Dragonfly
Forum Elite
Topics: 24
Posts: 331
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yes Thymus. in kids it is much much bigger and is right behind the sternum.
i think what chrales was trying to point was the importance of aortic arch which in case of e.g. aneurysm can be felt in the suprasternal notch. but it is true in adults
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