Difference between revisions of "Vas deferens"
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*Surface should be inked. | *Surface should be inked. | ||
===Microscopic=== | ===Microscopic=== | ||
Features: | Features:<ref name=pmid19926581> | ||
*Tubular structure - | *Tubular structure - three muscle layers. | ||
**Inner circular. | **Inner longitudinal (thin). | ||
**Outer longitudinal. | **Middle circular (thick). | ||
*Epithelium = | **Outer longitudinal (thick). | ||
*Epithelium | |||
**Apical cells = columnar, ciliated. | |||
**Basal cells = cuboidal. | |||
Note: | Note: | ||
Revision as of 20:01, 1 February 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.
Note:
- Vasectomy is associated with testicular changes - increased seminiferous tubule wall thickness and decreased number of Sertoli cells.[2]
Gross
- Cylindrical piece of tissue.
Note:
- Surface should be inked.
Microscopic
Features:Cite error: Closing </ref> missing for <ref> tag
- CD10 +ve (marker of Wolffian differentiation).
- Pankeratin +ve.
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Right then left
A. VAS DEFERENS, RIGHT, VASECTOMY: - VAS DEFERENS WITHIN NORMAL LIMITS, COMPLETE CROSS SECTION PRESENT. B. VAS DEFERENS, LEFT, VASECTOMY: - VAS DEFERENS WITHIN NORMAL LIMITS, COMPLETE CROSS SECTION PRESENT.
Left then right
A. VAS DEFERENS, LEFT, VASECTOMY: - VAS DEFERENS WITHIN NORMAL LIMITS, COMPLETE CROSS SECTION PRESENT. B. VAS DEFERENS, RIGHT, VASECTOMY: - VAS DEFERENS WITHIN NORMAL LIMITS, COMPLETE CROSS SECTION PRESENT.
Single container
VAS DEFERENS, RIGHT AND LEFT, VASECTOMY: - VAS DEFERENS WITHIN NORMAL LIMITS.
Incomplete cross-section
A. VAS DEFERENS, RIGHT, VASECTOMY: - INCOMPLETE CROSS-SECTION OF VAS DEFERENS WITHOUT SIGNIFICANT PATHOLOGY, SEE COMMENT. B. VAS DEFERENS, LEFT, VASECTOMY: - VAS DEFERENS WITHIN NORMAL LIMITS, COMPLETE CROSS SECTION PRESENT. COMMENT: Clinical correlation is suggested.
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.
- Lined by columnar/cuboidal epithelium.
- +/-Sperm granulomas.
- Histocytes - abundant foamy cytoplasm.
- Sperm - small, dark staining, teardrop-shaped (~1 micrometer).
DDx:
- Metastatic (prostate) carcinoma.
Notes:
- Can be confused with prostatic adenocarcinoma:[4]
- May "invade" vascular spaces - associated with elastosis (breakdown of elastic fibres[5]).
Image:
IHC
- PSA -ve.
- PSAP -ve.
Bilateral absence of the vas deferens
- Seen in cystic fibrosis.
See also
References
- ↑ URL: http://www.upmccancercenters.com/cancer/prostate/radprostretropubic.html. Accessed on: 26 September 2011.
- ↑ Jarow, JP.; Budin, RE.; Dym, M.; Zirkin, BR.; Noren, S.; Marshall, FF. (Nov 1985). "Quantitative pathologic changes in the human testis after vasectomy. A controlled study.". N Engl J Med 313 (20): 1252-6. doi:10.1056/NEJM198511143132003. PMID 4058505.
- ↑ 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/.
- ↑ Balogh, K.; Travis, WD. (Apr 1985). "Benign vascular invasion in vasitis nodosa.". Am J Clin Pathol 83 (4): 426-30. PMID 3984936.
- ↑ URL: http://medical-dictionary.thefreedictionary.com/elastosis. Accessed on: 26 September 2011.