urethral calculus

Urethral
calculi presenting with acute urinary retention. Radiodense opacity at the penis level.
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Urethral
calculi presenting with acute urinary retention. Axial reconstruction at the penis base level shows two impacted urethral calculi (yellow arrow).
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Giant
urethral calculus in anterior urethral diverticulum: a case report. Irregular clumps was observed in the subcutaneous posterior scrotum in the prostate MR scan before lithotripsy
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Giant
urethral calculus in anterior urethral diverticulum: a case report. A giant urethral calculus with a size of 6.5 × 6 × 5.5 cm was observed below the pubic symphysis in the enhanced urinary CT
bmcurol.biomedcentral.com • CC-by-4.0
Female
urethral diverticulum with calculus. Urethral calculus
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Female
urethral diverticulum with calculus. MCUG showing urethral diverticulum with calculus.
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Female
urethral diverticulum with calculus. Calculus opacity overlying pubic symphysis.
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Urethral
calculi presenting with acute urinary retention. Sagittal reconstruction shows two impacted urethral calculi (yellow arrow) and another one of smaller dimension in the bladder lumen (white arrow). Note the Foley catheter adequately placed (green star).
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2-teiliges,
großes Konkrement im Verlauf der Urethra als Zufallsbefund bei einer CT-Untersuchung wegen einer abdominellen Raumforderung. Der Befund ist so groß, dass das Konkrement mutmaßlich in einem Divertikel der Urethra liegt, klinisch waren keine Miktionsbeschwerden auffällig.
Wikipedia • CC BY-SA 4.0
Radiopaedia • CC-by-nc-sa 3.0 • de

Urethral calculi are an uncommon type of urolithiasis, accounting for ~1% of all urinary tract stones.

Epidemiology

They almost all occur in males  with two peak incidences - one in childhood and the other at 40 years .

Clinical presentation

Most commonly acute lower urinary tract symptoms and/or urinary retention.

Pathology

Urethral calculi are most commonly calcium oxalate (~85%) and can be either :

Location

Most impact in the prostatic urethra although ~40% (range 30-50%) are found in the anterior urethra .

Radiographic features

Almost all (98-100%) of urethral stones are reported to be radiopaque  but most are small and only faintly radiopaque and up to 60% will be missed .

Differential diagnosis

Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Urethrakonkrement:
Urolithiasis
 
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Divertikel
der Urethra
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Divertikel
der Urethra mit Konkrement
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