I believe the answer to this question is wrong. Unsure. Help!

[Silverish]

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24 year old dude is evaluated for headaches and visual changes. An intracrainial calcified mass is detected on MRI. Mass is removed. Gross inspection shows cystic spaces filled with thick brownish fluid that is rich in cholesterol (obviously a craniopharyngioma..). The mass most likely shares a common origin with which of the following?
A. Choroid plexus
B. Pineal gland
C. Pituitary gland
D. Cerebellar vermia
E. Retina
F. None of the above

 

[Chilladosis]

craniopharyngioma is a benign tumor derived from rathke's pouch remnants, rathke's pouch also gives rise to the anterior lobe of the pituitary gland.
C? RR path 3rd edition page 476 (bottom)

 

[RnaPolymerase2]

Pituitary gland

 

[Silverish]

Ok ok fine!
I was thinking moreso along the lines of it being from the ectoderm... Looking for an ectoderm derivative.
As for the pituitary, I was mostly considering posterior pituitary.

 

[seminoma]

Ok ok fine!
I was thinking moreso along the lines of it being from the ectoderm... Looking for an ectoderm derivative.
As for the pituitary, I was mostly considering posterior pituitary.

Lots of ways to think about this that would make it easier for you to not mess up.

1. Craniopharyngiomas are also called Rathke pouch tumors. The anterior pituitary is a Rathke pouch derivative.
2. The anterior pituitary is ectoderm.. just like craniopharyngiomas.
3. "Pituitary gland" doesn't mean anterior or posterior. Regardless, if you're going to "mostly consider" either the anterior or the posterior when you see "pituitary gland" you should really be thinking anterior since it has way more secretory function. Plus I'm pretty sure it's the larger half.
4. "common origin" and "common germ layer" are not the same. Your toenails do not share a common origin with the anterior pituitary, despite sharing a common germ layer.

 

[Silverish]

"common origin" and "common germ layer" are not the same. Your toenails do not share a common origin with the anterior pituitary, despite sharing a common germ layer.

Haha word.
Thanks for clarity seminoma