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Urethral calibre

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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French gauge

  • bladder neck 36
  • prostatic urethra 45
  • membranous urethra 27
  • bulbar urethra 33-36
  • penile urethra 27-30
  • external urethral meatus 21-27

French gauge corresponds to circumference in millimetres.

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