Effectiveness of Silodosin in Medical Expulsive Therapy for Ureteral Pelvic Stone From 4 to 10 mm.

Inclusion Criteria: * Men * Women on oral contraception (for women of childbearing age). * 18 to 60 years. * First admission to the episode of renal colic without evidence of complication (afebrile without renal input, negative beta-hCG (women of childbearing age) without severe vomiting without uropathy malformation known underlying balance sheet. ). * In ability to deliver its consent. * patient with a single calculation pelvic ureteral 4 to 10 mm cross-sectional diameter, with or without calyx calculations (not obstructive), but other calculation ureter. * Unique pelvic stone : * Proven by imaging: helical scan without contrast injection-ASP abdominopelvic. * Radio-opaque to the ASP. * More than 3mm and \<11mm (4 to 10 mm) of cross-sectional diameter. Exclusion Criteria: * Pregnant or lactating women scalable * No oral contraception * Contraception by intrauterine device . * Concurrent infection ( positive urine test strip for Nitrites and / or general signs tanks (T ° C \> 38 ° 5 or \<36 ° 5 or chills) . * Renal failure ( Creatinine clearance calculated by Cockcroft and Gault \<60 mL / min). * Single functional kidney . * Treatment with calcium channel blockers or alpha blockers. * Recent or upcoming cataract surgery . * Orthostatic hypotension . * A history of peptic ulcer disease , liver disease , allergy to paracetamol , the ketoprofen . * History of stroke , heart disease, diabetes. * History of allergy to any treatment plans. * Refusal to enter the protocol. * Already included in the protocol. * Medication against -indicated in combination with NSAI (vitamin K ..) * Hepatic Impairment * Participation in other biomedical research * Patients with a history of hypersensitivity such as bronchospasm , asthma, rhinitis , urticaria * Patients with asthma associated with chronic rhinitis, chronic sinusitis and / or nasal polyposis * History of gastrointestinal bleeding or perforation during previous treatment with NSAI or history of gastrointestinal diseases such as ulcerative colitis, Crohn's diseases, gastrointestinal bleeding , cerebrovascular bleeding or other bleeding evolving * Patients receiving treatment associated may increase the risk of ulceration or bleeding (glucocorticoids , selective serotonin reuptake inhibitors and antiplatelet agents such as aspirin ) * Patients with uncontrolled hypertension, congestive heart failure , ischemic heart disease, peripheral arterial disease, and / or a history of stroke (including transient ischemic attack) * Patients treated with potassium-sparing drugs Pelvic stone : * Multiple * Size \< 4 mm or \> 10mm * Radiolucent * Not formally identified by imaging.