[Behavior of the contralateral ureter following surgery for unilateral antireflux surgery].

We present our experience of 44 cases with unilateral vesicorenal reflux that had been treated by ureteroneocystostomy using the Cohen technique. The reflux disappeared in 32 cases, it appeared in the contralateral ureter in 7 patients, it was ipsilateral in 2 and bilateral in 3. Of the 10 cases with contralateral reflux, 2 required surgery, while 8 were amenable to medical treatment. In our series, contralateral reflux appeared at random. Since the spontaneous cure rate was 80%, we believe that bilateral antireflux surgery for unilateral reflux is unwarranted. Urodynamic studies can be important in the indication for conservative treatment.