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Updated: Aug 9, 2026

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Point-of-Care Kidney and Genitourinary Ultrasound in Adults: Image Acquisition
Published on: June 21, 2024
Summary
Sudden cessation of urine output (anuria) is often caused by bladder outlet obstruction. A rare case highlights unilateral renal agenesis and solitary kidney obstruction as a cause of anuria.
Area of Science:
- Nephrology
- Urology
Background:
- Obstructive uropathy, typically at the bladder outlet, is the most frequent cause of anuria.
- Bilateral ureteral obstruction and unilateral obstruction in a solitary kidney are less common etiologies of anuria.
Observation:
- This report details a unique case of unilateral renal agenesis.
- The patient presented with anuria due to obstruction in their single, solitary kidney.
Findings:
- Unilateral renal agenesis combined with obstruction of the solitary kidney can manifest as complete anuria.
- This presentation underscores the importance of considering congenital anomalies in the differential diagnosis of anuria.
Implications:
- This case expands the differential diagnosis for anuria, particularly in the context of congenital kidney abnormalities.
- Clinicians should consider the possibility of solitary kidney obstruction in patients with unexplained anuria.
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