Table 2.

Features of magnetic resonance imaging of the pituitary gland for all patients. F: female. M: male. MRI: magnetic resonance imaging. FDG-PET: fluorodeoxyglucose-positron emission tomography; N/A: not available

Case	Pre-operative MRI				Post-operative surveillance imaging
	Pituitary mass	Optic chiasmal compression	Thick stalk	Loss of posterior bright spot on T1 weighting	Reduction in pituitary mass on MRI	Thick stalk on MRI	FDG-PET
1	Present	Absent	No	No	N/A	N/A	N/A
2	Present	Absent	No	No	Yes	No	N/A
3	Present	Absent	Yes	No	Yes	Yes	Normal
4	Present	Absent	Yes	Yes	Yes	Yes	N/A
5	Present	Present	No	No	Yes	No	N/A
6	Present	Absent	Yes	No	Yes	Yes	Right submandibular gland avid; not IgG4
7	Present	Absent	Yes	No	Yes	Yes	N/A
8	Present	Absent	Yes	No	Yes	Yes	Non-specific enhancement of sella, low-grade uptake in large vessels