Difference between revisions of "Urethra"

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#redirect [[Urothelium#Urethra_in_males]]
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.
*[[Prostate gland|Prostatic]] urethra - transitional epithelium.
**Cancer arising at this site is ''[[prostatic urothelial carcinoma]]''.
*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==
*[[Squamous cell carcinoma]].
*[[Urothelial carcinoma]].
*[[Prostatic carcinoma]] - may have pseudopapillae<ref name=pmid24503758>{{cite journal |author=Gordetsky J, Epstein JI |title=Pseudopapillary features in prostatic adenocarcinoma mimicking urothelial carcinoma: a diagnostic pitfall |journal=Am. J. Surg. Pathol. |volume=38 |issue=7 |pages=941–5 |year=2014 |month=July |pmid=24503758 |doi=10.1097/PAS.0000000000000178 |url=}}</ref> and mimic urothelial carcinoma - see ''[[urothelial carcinoma-like prostatic carcinoma]]''.
*[[Clear cell adenocarcinoma of the urethra]] - similar to [[clear cell carcinoma]] of the gynecologic tract.
*[[Urethral caruncle]].
*[[Lichen sclerosus]].<ref name=pmid24268357>{{Cite journal  | last1 = Stewart | first1 = L. | last2 = McCammon | first2 = K. | last3 = Metro | first3 = M. | last4 = Virasoro | first4 = R. | title = SIU/ICUD Consultation on Urethral Strictures: Anterior urethra-lichen sclerosus. | journal = Urology | volume = 83 | issue = 3 Suppl | pages = S27-30 | month = Mar | year = 2014 | doi = 10.1016/j.urology.2013.09.013 | PMID = 24268357 }}</ref>
*[[Prostatic-type polyp]].
 
==See also==
*[[Urothelium#Urethra_in_males|Urethra in males]].
*[[Urothelium]].
 
==References==
{{Reflist|1}}
 
[[Category:Genitourinary pathology]]

Latest revision as of 20:11, 30 December 2016

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.