A unique complication: Iatrogenic renal pelvis perforation following accidental urinary catheterisation of an intramural ectopic ureter in a dog.

A 5‐month‐old, female, entire golden retriever presented for investigation of urinary incontinence and recent urinary tract infection. While under general anaesthesia, a urinary catheter was placed to fill the bladder, aid accurate visualisation of the ureteral vesicular junction and facilitate a retrograde contrast study. The preliminary computed tomography was deemed unremarkable, and a computed tomography intravenous urethrogram was performed, followed by retrograde of contrast in an attempted vaginourethrogram. The post‐contrast retrograde study highlighted an unusually straight distal right ureter and contrast escaping into the right retroperitoneal space. Contrast‐enhanced ultrasonography supported haemorrhage into the perirenal space, and on retrospective analysis of preliminary pre‐contrast computed tomography sequences, the urinary catheter was identified in the right renal pelvis. Accidental catheterisation of the right intramural ectopic ureter and iatrogenic renal perforation was ultimately concluded. The dog made a full recovery with conservative management and to date has no chronic repercussions of the injury. [ABSTRACT FROM AUTHOR]