A 12-Year-Old Boy Is Evaluated for Chronic Headaches and Visual

A 12-year-old boy is evaluated for chronic headaches and visual changes.  The headaches have progressively worsened over the past year and are associated with nausea.  The patient's parents are especially concerned as his symptoms have been interfering with his coursework in middle school.  An intracranial calcified mass is detected on brain imaging.  The mass is surgically removed and on gross inspection shows cystic spaces filled with thick, brownish-yellow fluid that is rich in cholesterol.  This mass is most likely derived from cells responsible for forming which of the following structures?

A) Anterior pituitary
B) Cerebellar vermis
C) Choroid plexus
D) Pineal gland
E) Retina

Correct Answer:

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