The purpose of this study is to check whether antimuscarinics that usually broadly used in the treatment of overactive bladder symptoms are effective in the treatment of those symptoms after insertion of ureteral stents. In order to study the efficacy of the treatment of OAB symptoms in stented patients the investigator will use a suitable questionnary.

Inclusion Criteria:

• everyone who underwent ureteral stent insertion and started the treatment with detrusitol

Exclusion Criteria:

• adverse affects of detrusitol or unwillness of the patient to continue the treatment with detrusitol, cronic renal or hepatic failure

patients which underwent ureteral stent insertion