Why I might be a little nervous

Hear are the images showing what seems to me is another tumor.

MRI back in early September

Post-surgery MRI showing growth in area nearby choroid plexus

Most recent MRI showing further growth (?) of same area.

 Is it a tumor? Sure looks like one in this sequence of images. I'll be meeting with Dr. Berger on Monday, and after that getting another MRI in early December if I'm not already so scared into thinking I need to do something sooner.