ArticleJournal of ultrasound2021
Detection of distal ureteral stones in pregnancy using transvaginal ultrasound.
Article in Journal of ultrasound, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 16 citations in OpenAlex.
- Transrectal ultrasonography provides enhanced detection of distal ureteral stones compared to conventional imaging modalities.International urology and nephrology · 2026Article
- Diagnosis and Management of Urinary Stone Disease in Pregnancy: Integrating Current Guidelines with Emerging Evidence.Current urology reports · 2026Review
- Urological Challenges during Pregnancy: Current Status and Future Perspective on Ureteric Stent Encrustation.Journal of clinical medicine · 2024Review
- Review
- Imaging of Acute Abdominopelvic Pain in Pregnancy and Puerperium-Part II: Non-Obstetric Complications.Diagnostics (Basel, Switzerland) · 2023Review
- Management of urolithiasis in pregnancy.Current urology · 2023Article
- Management of Kidney Stone Disease in Pregnancy: A Practical and Evidence-Based Approach.Current urology reports · 2022Review
- [Ultrasonography of the kidneys, retroperitoneal space and urinary bladder : Importance for urologists in hospitals and medical practice].Der Urologe. Ausg. A · 2022Review
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimsTo determine the performance of transvaginal ultrasound for the visualization of distal ureteral stones in pregnant patients with renal colic and to evaluate the diagnostic value of secondary findings suggestive of obstructing ureteral stone disease.
methodsWe retrospectively identified 129 pregnant patients with a total of 142 encounters with both abdominal and transvaginal ultrasound. Ultrasound images for each patient were reviewed recording the presence of stone with location, hydronephrosis, resistive indices (RI), and status of the ureteral jets. Patients were subcategorized into two groups based on the visualization of distal ureteral stone.
resultsThe transvaginal technique identified 94% (N = 16/17) of sonographically detected stones in the distal ureter/urethra, while the transabdominal technique identified 29% (N = 5/17). The combined imaging for initial assessment of renal colic in pregnancy demonstrated a sensitivity of 89%, specificity 100%, and negative predictive value (NPV) of 98%. The frequency of hydronephrosis was statistically greater in the visualized stone group (94% vs 51%). Mean RI was identical in both groups however the delta RI was significantly elevated in those patients with distal ureteral stones with a mean delta RI value of 0.05. The rate of absence of ureteral jets was not statistically significant.
conclusionThe present data would suggest a utility of transvaginal ultrasound for the evaluation of the pregnant patient with 94% of distal stones being detected transvaginal versus 29% transabdominally. Additionally, there was significantly increased hydronephrosis and elevated RIs in patients with distal ureteral stones.
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