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MRI of the Pituitary

Basics: What is an MRI of the Pituitary?

To come.

 

Discussion of images above:

There is a mildly heterogeneously enhancing mass arising in the suprasellar region which measures up 1.6 cm transverse x 1.7 cm craniocaudal x 1.6 cm AP. What is interesting to note is that there is a partially empty sella and there is a cleared tissue plane separating pituitary tissue from the tumor. The tumor deviates the stalk posteriorly as well as to the left of midline. In addition the midline and right side of the optic chiasm is clearly elevated. The mass is demonstrated as invading the right cavernous sinus and encasing the proximal horizontal portion as well as the siphon portion of the cavernous carotid. In addition the right anterolateral aspect of the tumor is intimate with the proximal aspect of the right optic nerve. There is no expansion of the bony sella, or extension of tumor into the sphenoid sinus or involvement of the clival marrow.

1.7 by 1.6 by 1.7 cm heterogeneously enhancing suprasellar mass which displaces the pituitary stock and chiasm and invades the right cavernous sinus encircling the cavernous carotid artery. It appears to be separate from pituitary tissue and arising in a suprasellar location and is in intimate with the proximal right optic nerve. Diagnostic considerations include optic nerve glioma, pituitary macroadenoma, less likely atypical presentation of craniopharyngioma, meningioma, or germinoma.

 

 

 

 

 

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