EP06.55: Diagnostic insights and clinical outcomes of fetal urinary extravasation

To present a series of prenatal-diagnosed urinary extravasations, focusing on key imaging findings and their clinical relevance. This retrospective cohort study spans five years, focusing on prenatally diagnosed cases of fetal urinary extravasation. Out of approximately 1750 targeted scans for kidney and urinary tract anomalies performed in two referral centres, seven cases (0.4%) of fetal urinary extravasation were identified: five unilateral urinomas, one bilateral urinoma, and one urinary ascites case. The cases were diagnosed between 20 and 36 weeks of gestation, with a gender split of three males and four females. Three cases were associated with lower urinary tract obstruction, 3 with unilateral obstructions, and one unique case was related to an intraspinal mass leading to non-obstructive urinary retention and subsequent bladder rupture. One case was associated with postpartum death due to respiratory insufficiency, and in another case, the pregnancy was terminated due to genetic findings. Of the cases that proceeded to delivery, 3 required surgical interventions for conditions (AUV, PUV, and ureterocele), and two were effectively managed conservatively. Prenatal urinary extravasation is a rare condition resulting most commonly, but not always, from obstructive uropathies and has diverse pre- and postnatal clinical manifestations and outcomes. A prenatal diagnosis of urinary extravasation and a thorough evaluation of the urinary system may reveal the underlying etiology and improve parental counselling regarding postnatal surgical intervention and renal outcome. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.