PMC7784232_01
First pituitary MRI, T1-weighted midsagittal image without contrast (A) and T2-weighted coronal image (B). Heterogeneous pituitary mass but predominantly high signal at T2-weighted sequence (single asterisk in B). Its suprasellar component causes compression & mild upward displacement of the optic chiasm (black arrow in B). Double asterisks indicate the basisphenoid.
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This enlarged pituitary mass (white arrow in A) is associated with suprasellar extension (Figure 1).
Follow up MRI in the midsaggital plane, T1-weighted (A) and T2-weighted images (B). The T1 hyperintense posterior pituitary (white arrowhead in A), with much of the anterior pituitary, flattened against the seller floor (white arrow in A). The optic chiasm is prolapsed inferiorly into the sella (black arrow in B).
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This follow-up MRI showed a drastic regression of the pituitary mass (Figure 2).