title: An unusual cause of cystolithiasis: a migrant intrauterine device.
abstract: A woman is described in whom an intrauterine device eroded through the bladder wall, causing calculus formation and chronic infection.
mesh_terms: D000328:Adult; D005260:Female; D005547:Foreign Bodies / Q000150:complications*; D005548:Foreign-Body Migration / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D001743:Urinary Bladder / Q000000981:diagnostic imaging; D001744:Urinary Bladder Calculi / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D014567:Urography