Do the MRI appearances continue to support a diagnosis of papillary craniopharyngioma?
Yes. This is a very typical example.
Doesn't the absence of T1 hyperintensity in the cystic component make you a little uncomfortable with this diagnosis?
It shouldn't. Papillary craniopharyngioma cysts tend to be filled with thin water fluid rather than the 'machinery oil' of adamantinomatous tumours. They tend to be hypointense on T1.
MRI of the brain demonstrates a predominantly solid enhancing suprasellar mass with a small cystic component posteriorly, towards the left, which demonstrates no T1 hyperintensity.