I have had a ct w/ contrast and a MRI w/o contrast in Dec 2015 and only a benign renal cyst.

Then in May 2015 had a follow up ct w/ contrast and only the benign renal cyst.

Then went to new doctor and had a MRI w/ contrast on August 7 2016, and showed "a tiny barely perceptible cyst on the tail of the pancreas".  Would something have time to form?  

My gi doctor said his expectation is that will not be on the follow up MRI next week?

Your opinion please.

Thank you

Is a tiny barely perceptible cyst on the tail of ...