Urethra

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The urethra takes the urine from the urinary bladder to outside of the body.

It is occasionally afflicited by tumours.

Anatomy

  • Proximal portion = urothelium.
  • Distal portion = squamous.

Males

  • Pre-prostatic urethra - transitional epithelium.
  • Prostatic urethra - transitional epithelium.
  • Membranous urethra (from apex of prostate to bulb of penis (bulb of the corpus spongiosusm)) - pseudostratified columnar epithelium.
  • Spongy urethra - pseudostratified columnar epithelium (proximal) & stratified squamous (distal).

Pathology

See also

References

  1. Gordetsky J, Epstein JI (July 2014). "Pseudopapillary features in prostatic adenocarcinoma mimicking urothelial carcinoma: a diagnostic pitfall". Am. J. Surg. Pathol. 38 (7): 941–5. doi:10.1097/PAS.0000000000000178. PMID 24503758.
  2. Stewart, L.; McCammon, K.; Metro, M.; Virasoro, R. (Mar 2014). "SIU/ICUD Consultation on Urethral Strictures: Anterior urethra-lichen sclerosus.". Urology 83 (3 Suppl): S27-30. doi:10.1016/j.urology.2013.09.013. PMID 24268357.