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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does The Meaning Of Infundibulum Is Slightly Deviated To The Left In MRI Report?

What does this MRI result mean? The infundibulum is slightly deviated to the left. Prominent pituitary gland with an upward convex superior margin. Total measurements are approximately 1 x 1.5 x 0.75 cm (AP x TR x CC). This most likely represents physiologic enlargement or less likely an early macroadenoma. No evidence of pituitary microadenoma is identified. Of note, contrast enhanced MRI is able to detect pituitary microadenomas once they reach 3 to 5 mm in diameter. Smaller lesions may not be detectable. If the hormonal abnormalities persist, repeat MRI imaging in the future may be of help. I ve been treated for elevated prolactin since 2007, but never a defined tumor. Recently, my prolactin levels have started to climb along with increased headaches. The above MRI was done because of these issues. I think it is saying that the gland in enlarged, but no tumor. Then it says no microadenoma , but could be enlarged from a macroadenoma.... so confused.
posted on Tue, 13 May 2014
Twitter Wed, 21 May 2014 Answered on
Twitter Wed, 21 May 2014 Last reviewed on
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Radiologist,  's  Response
Hi,
Thanks for writing in.

The pituitary gland is measuring just above upper limits of normal and cannot be categorized definitely as enlarged. The only other possibility is the presence of a macroadenoma which is slowly growing in size (over months to years). Macroadenomas can be functional or non functional and hormonal analysis is required to get a better interpretation. Any visual field defects are to be evaluated because any increase in the size of pituitary first usually presents with various degrees of visual problems. The meaning of infundibulum slightly deviated to left side is just describing the exact appearance of the pituitary and not indicating any abnormality.
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What Does The Meaning Of Infundibulum Is Slightly Deviated To The Left In MRI Report?

Hi, Thanks for writing in. The pituitary gland is measuring just above upper limits of normal and cannot be categorized definitely as enlarged. The only other possibility is the presence of a macroadenoma which is slowly growing in size (over months to years). Macroadenomas can be functional or non functional and hormonal analysis is required to get a better interpretation. Any visual field defects are to be evaluated because any increase in the size of pituitary first usually presents with various degrees of visual problems. The meaning of infundibulum slightly deviated to left side is just describing the exact appearance of the pituitary and not indicating any abnormality.