Difference between revisions of "Vas deferens"

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Features:
Features:
*Tubular structure - two muscle layers.
*Tubular structure - two muscle layers.
**Inner circular.
**Outer longitudinal.
*Epithelium = simple, columnar, ciliated.
*Epithelium = simple, columnar, ciliated.


DDx:
DDx:
*Missed vas deferens.
*Missed vas deferens.
Note:
*Muscle layers - like in bowel.


===IHC===
===IHC===

Revision as of 02:10, 17 January 2013

The vas deferens are often seen as part of a prostatectomy specimen.[1] They are the component of the spermatic cord that carries the sperm. They seldom arrive alone.

Normal vas deferens

Vasectomy redirects here.

General

  • Seen in the context of vasectomy.

Microscopic

Features:

  • Tubular structure - two muscle layers.
    • Inner circular.
    • Outer longitudinal.
  • Epithelium = simple, columnar, ciliated.

DDx:

  • Missed vas deferens.

Note:

  • Muscle layers - like in bowel.

IHC

Features:[2]

  • CD10 +ve (marker of Wolffian differentiation).
  • Pankeratin +ve.

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A. VAS DEFERENS, RIGHT, VASECTOMY:
- VAS DEFERENS WITHIN NORMAL LIMITS.

B. VAS DEFERENS, LEFT, VASECTOMY:
- VAS DEFERENS WITHIN NORMAL LIMITS.

Single container

VAS DEFERENS, RIGHT AND LEFT, VASECTOMY:
- VAS DEFERENS WITHIN NORMAL LIMITS.

Vasitis nodosa

General

  • Classically develops post-vasovasostomy (vasectomy reversal).[3]
    • Seen in association with other surgical procedures.
    • May be seen in the context of infertility (without prior vasectomy).
  • Some similarity to salpingitis isthmica nodosa.[3]

Gross

  • Mass.

Microscopic

Features:[3]

  • Tubules in wall of vas deferens.
    • Lined by columnar/cuboidal epithelium.
      • May have mitotic activity.
      • Nucleoli.
      • Contain sperm - small, dark staining, teardrop-shaped (~1 micrometer) - key feature.
  • +/-Sperm granulomas.
    • Histocytes - abundant foamy cytoplasm.
    • Sperm - small, dark staining, teardrop-shaped (~1 micrometer).

DDx:

  • Metastatic (prostate) carcinoma.

Notes:

Image:

IHC

  • PSA -ve.
  • PSAP -ve.

Bilateral absence of the vas deferens

See also

References

  1. URL: http://www.upmccancercenters.com/cancer/prostate/radprostretropubic.html. Accessed on: 26 September 2011.
  2. Sasaki, K.; Bastacky, SI.; Zynger, DL.; Parwani, AV. (Dec 2009). "Use of immunohistochemical markers to confirm the presence of vas deferens in vasectomy specimens.". Am J Clin Pathol 132 (6): 893-8. doi:10.1309/AJCPQZX4WS8UPKGG. PMID 19926581.
  3. 3.0 3.1 3.2 Hirschowitz, L.; Rode, J.; Guillebaud, J.; Bounds, W.; Moss, E. (Apr 1988). "Vasitis nodosa and associated clinical findings.". J Clin Pathol 41 (4): 419-23. PMC 1141468. PMID 3366928. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1141468/.
  4. Balogh, K.; Travis, WD. (Apr 1985). "Benign vascular invasion in vasitis nodosa.". Am J Clin Pathol 83 (4): 426-30. PMID 3984936.
  5. URL: http://medical-dictionary.thefreedictionary.com/elastosis. Accessed on: 26 September 2011.