98TRANSURETHRAL AND INTRAVESICAL IOHEXOL INSTILLATION IN NON-SPECIFIC ADOLESCENT POSTERIOR URETHRITIS PRESENTING WITH RECURRENT ACUTE SCROTUM SECONDARY TO URETHROVASAL REFLUXWe report a case of severe form of adolescent posterior urethritis presenting with recurrent acute scrotum secondary to urethrovasal reflux in a 12-year-old boy. Patient developed urethrovasal reflux (UVR) associated with severe urethral and scrotal pain secondary to inflamed hydatid cysts and recurrent epididymitis. It required many admissions and interventions over the past 2 years. Several antibiotic courses, antihistamines and analgesic anti-inflammatory medications did not help; in fact worsened his symptoms. Diagnostic transurethral and intravesical instillation of iohexol produced therapeutic effects and complete recovery. Adolescent idiopathic non-specific urethritis in association with bilateral UVR causing secondary epididymitis is rare. We report the first such rare case presenting as recurrent acute scrotum and response we received to novel treatment we used by default rather than design and postulate some of the mechanisms responsible for therapeutic effects.ramnik@doctors.org.ukcasereport532015Adolescent,Non-specific urethriti, Acute scrotum, Urethrovasal reflux,Recurrent epididymitis,IohexolPatel Ramnik,Desai Divyesh,Undre Shabnam, Cherian AbrahamClinical Fellow, Paediatric Urology, UCLH and GOSH, UK, Specialist Paediatric Urology, UCLH and GOSH, UK, Consultant Paediatric Urology, UCLH and GOSH, UK., Consultant Paediatric Urology, UCLH and GOSH, UK.