T1 supra sellar hot spot

Summary 

-Finding is a hyper intense lesion seen in the supra sellar area in MRI T1 imaging.

 

-Look to the pituitary gland in its normal position inside sella, and be sure that its posterior lobe is present or not, if not present, so the hyper intense supra sellar lesion is ectopic posterior pituitary lobe. If seen in the sella, so think about other differential as the following:

 

-In contrast enhanced MRI T1 with fat suppression, if it is enhanced, consider it craniopharyngioma.

 

If not enhanced, look to the place of the lesion, if it is centrally located, think about dermoid cyst.If it is situated at the tuber synerium, so it will be teratoma.If it is present elsewhere in supra sellar area, it could be a lipoma.