Monday 22 February 2016

GERMINATE

Q.All are true regarding intracranial germinoma  except
a. the pineal region is the most frequent site
b. Germinomas are tumors of children or young adults.
c. Suprasellar germinomas are  encapsulated
d. suprasellar germinomas are typically midline, centered at or just behind the pituitary infundibulum
e. the posterior pituitary bright spot is absent in most cases

ANS.---c


Suprasellar germinomas are not encapsulated. They are very infiltrative, adherent to the ventral surface of the brain, and often closely related to the optic nerves. They have a propensity to spread through the subarachnoid space with metastatic deposits to the walls of the ventricles and the basal cisterns.

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