As of the latest update, Google Chrome and Microsoft Edge have made a breaking change to how file uploads are handled. Once your system installs this update, you will not be able to upload new images. Please use another browser until we can get it fixed.

Urethral calculus

Dr Ian Bickle and Dr Henry Knipe et al.

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

They almost all occur in males 2 with two peak incidences - one in childhood and the other at 40 years 3.

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

Urethral calculi are most commonly calcium oxalate (~85%) and can be either 1,2,5:

Most impact in the prostatic urethra although ~40% (range 30-50%) are found in the anterior urethra 2,5.

Almost all (98-100%) of urethral stones are reported to be radiopaque 3 but most are small and only faintly radiopaque and up to 60% will be missed 5.

Share article

Article information

rID: 37545
System: Urogenital
Synonyms or Alternate Spellings:
  • Urethral calculi
  • Urethral stones

Support Radiopaedia and see fewer ads

Cases and figures

  • Case 1
    Drag here to reorder.
  • Case 2
    Drag here to reorder.
  • Case 3
    Drag here to reorder.
  • Case 4: transrectal ultrasound
    Drag here to reorder.
  • Small radio-opaqu...
    Case 5
    Drag here to reorder.
  • Case 6
    Drag here to reorder.
  • Case 8
    Drag here to reorder.
  • Case 9: in a female
    Drag here to reorder.
  • Case 10
    Drag here to reorder.
  • Case 11
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.