Elidel Cream

Has anybody used Elidel Cream for their psoriasis? My derm just prescribed it for my face. I read that it is used for eczema but can also be used for psoriasis on the face. Also, exactly how rare is the chance of developing lymphoma from the use of this drug? There is a black box warning. It says rare. I want to know HOW rare, and I can't find any data or related info. Has anybody on here used this cream and found any info on this? I am also finding in some places that this has been proven to not be true. If this isnthe case why is there still a warning? Maybe I am overreacting, I just want to be fully informed and see some numbers. I appreciate any help.

Thanks