Novel approach to locating a hypoplastic kidney in a unique variant of uterine didelphys syndrome presenting with continuous incontinence.

Mullerian abnormalities such as uterine didelphys have an association with renal abnormalities. Ureteric ectopia must be considered as a differential diagnosis of incontinence. We describe the case of a 21-year-old woman who presented with low volume continuous incontinence with a history of right renal agenesis and uterus didelphys. A right kidney was not identified on CT intravenous pyelogram but excretory phase images suggested the presence of a right ureter. Diethylenetriaminepentaacetic acid renogram confirmed an area of perfusion consistent with a poorly functioning right kidney remnant. Cystoscopic investigation demonstrated an orthotopic left ureteric orifice, and an ectopic right ureteric orifice was identified in the posterior fornix of the right vagina. A laparoscopic right nephrectomy was performed, with a new application of indocyanine green aiding in identification of the right hypoplastic kidney with fluorescence imaging. The patient recovered well postoperatively and experienced complete resolution of incontinence, with preserved normal renal function. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.