Current therapeutic options for ureteral stones include active intervention as well as conservative "watch and wait" approaches. Endoscopic treatment of ureteral stones has a high success rate and reliably results in immediate stone removal However, surgical as well as anaesthetic risks are not negligible and serious complications are possible. For many patients, a conservative treatment is an appealing option. Watchful waiting, however, not always results in stone clearance and may be associated with recurrent renal colics.