White spot near bladder on non-contrast uro-CT — stone or calcification?

Hi, I recently had a uro-CT scan and for now I only have the images — I haven't received the radiologist's report yet. This image corresponds to the non-contrast phase. I noticed there's a white spot next to what I think is the bladder. Could it be some kind of stone or calcification? Thanks in advance!

https://preview.redd.it/d826mqc307yg1.png?width=1153&format=png&auto=webp&s=cac06b7cc840d8fa7928262bd700555f783cb6d1