Health Organization for Pudendal Education

Hi guys
Does anyone have a painful swelling to the sacrum? I mean it is visible lump at the base of my spine.
I have been told that my mri showed swelling to the bone marrow but surely this wouldn't stick out on my back like this??

I had visible swelling in sacral area on my affected side just lateral. Everyone blew it off. I still wonder what that was about.

C