<unk>  is a relatively uncommon cyst-like lesion, often discovered incidentally during ultrasound examination of the kidneys.<unk>  is a urine-containing cavity within the renal parenchyma, communicating with the collecting system through a narrow channel.
Calyceal diverticulum
Bladder diverticulum
Enterocele
Anal fissure
Appendiceal mucocele
Anal fistula
Calix diverticulum
Urethral diverticulum