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Related Experiment Video

Updated: Jul 7, 2026

Assessment of Maternal Vascular Remodeling During Pregnancy in the Mouse Uterus

Assessment of Maternal Vascular Remodeling During Pregnancy in the Mouse Uterus

Published on: December 5, 2015

Maternal urinoma during pregnancy.

Norichika Ushioda¹, Koji Matsuo, Masaaki Nagamatsu

¹Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.

The Journal of Obstetrics and Gynaecology Research

|January 30, 2008

Summary

Maternal urinoma, or urine leakage around the kidney, can occur during pregnancy. Prompt diagnosis with imaging and Double-J stent placement offers effective symptom relief and successful delivery.

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Assessment of Maternal Vascular Remodeling During Pregnancy in the Mouse Uterus

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Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection

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Published on: October 12, 2017

Area of Science:

Urology
Obstetrics & Gynecology
Radiology

Background:

Maternal urinoma, characterized by peripelvic urine extravasation, is a rare complication during pregnancy.
Etiologies include urinary trauma or obstruction, with limited data on its occurrence in pregnant patients.

Observation:

A primigravida at 21 weeks gestation presented with worsening right flank pain and hydronephrosis.
Serial ultrasonography revealed a significant perinephric fluid collection, prompting intervention.

Findings:

A Double-J stent placement led to rapid symptom improvement.
Review of six cases showed maternal urinoma predominantly in the second half of pregnancy, presenting with flank pain.

Implications:

Maternal urinoma is a critical differential diagnosis for flank pain in pregnancy.
Double-J stent placement is the primary management strategy.
Serial ultrasonography and close monitoring are crucial for timely diagnosis and management.