I've been having some on-and-off pain in my lower abdomen over the past few months, so I went for an abdomen scan. The results showed an anechoic cortical cyst in the upper pole of my right kidney, but no renal calculi or signs of hydronephrosis or hydroureter. Should I be worried about this cyst? I'm not sure what it means for my health, and I'd appreciate any advice you can give.