[Migration of an intrauterine device into the bladder. Report of a case]

We report an uncommon case of a bladder lithiasis arising from an intrauterine device (i.u.d.).

A female patient with i.u.d. for 13 years consulted for frequent episodes of cystitis. Patient evaluation demonstrated a bladder stone.

Treatment was cystolithotomy, which dislodged two stones. One stone was attached to the IUD.

Bladder calculus arising from an IUD is very rare. We review the literature.