Difference between revisions of "Leydig cell tumour"
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| IF = | | IF = | ||
| Gross = solid, red/tan | | Gross = solid, red/tan | ||
| Grossing = | | Grossing = [[orchiectomy grossing]] | ||
| Site = [[testis]] | | Site = [[testis]], [[ovary]] (rare) | ||
| Assdx = | | Assdx = | ||
| Syndromes = | | Syndromes = | ||
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*May be associated with increased testosterone. | *May be associated with increased testosterone. | ||
*Can be malignant in adults.<ref name=pmid17284120>{{Cite journal | last1 = Al-Agha | first1 = OM. | last2 = Axiotis | first2 = CA. | title = An in-depth look at Leydig cell tumor of the testis. | journal = Arch Pathol Lab Med | volume = 131 | issue = 2 | pages = 311-7 | month = Feb | year = 2007 | doi = 10.1043/1543-2165(2007)131[311:AILALC]2.0.CO;2 | PMID = 17284120 | URL = http://www.archivesofpathology.org/doi/full/10.1043/1543-2165%282007%29131%5B311:AILALC%5D2.0.CO;2 }}</ref> | *Can be malignant in adults.<ref name=pmid17284120>{{Cite journal | last1 = Al-Agha | first1 = OM. | last2 = Axiotis | first2 = CA. | title = An in-depth look at Leydig cell tumor of the testis. | journal = Arch Pathol Lab Med | volume = 131 | issue = 2 | pages = 311-7 | month = Feb | year = 2007 | doi = 10.1043/1543-2165(2007)131[311:AILALC]2.0.CO;2 | PMID = 17284120 | URL = http://www.archivesofpathology.org/doi/full/10.1043/1543-2165%282007%29131%5B311:AILALC%5D2.0.CO;2 }}</ref> | ||
*May be seen in the [[ovary]].<ref name=pmid20518640>{{Cite journal | last1 = Yetkin | first1 = DO. | last2 = Demirsoy | first2 = ET. | last3 = Kadioglu | first3 = P. | title = Pure leydig cell tumour of the ovary in a post-menopausal patient with severe hyperandrogenism and erythrocytosis. | journal = Gynecol Endocrinol | volume = 27 | issue = 4 | pages = 237-40 | month = Apr | year = 2011 | doi = 10.3109/09513590.2010.490611 | PMID = 20518640 }}</ref> | |||
Clinical:<ref name=pmid17284120/> | Clinical:<ref name=pmid17284120/> | ||
Revision as of 17:00, 27 April 2015
| Leydig cell tumour | |
|---|---|
| Diagnosis in short | |
 Leydig cell tumour. H&E stain. | |
|
| |
| LM | cytoplasmic vacuolization, cytoplasm -- clear to eosinophilic, +/-Reinke crystals (cylindrical crystalloid -- eosinophilic cytoplasmic bodies), +/-nucleoli common, round nuclei |
| LM DDx | spermatocytic seminoma (testis only), pregnancy luteoma (females only), Sertoli-Leydig cell tumour |
| IHC | inhibin-alpha +ve, calretinin +ve, melan A +ve |
| Gross | solid, red/tan |
| Grossing notes | orchiectomy grossing |
| Site | testis, ovary (rare) |
|
| |
| Prevalence | uncommon |
| Blood work | +/-elevated testosterone (rarely elevated estradiol) |
| Prognosis | usu. benign |
| Clin. DDx | other testicular tumours |
Leydig cell tumour, also known as interstitial cell tumour, is an uncommon benign sex cord-stromal tumour, typically seen in the testis.
Interstitial cell tumour should not be confused with renomedullary interstitial cell tumour.
General
- Arises from the interstitial cell.
- May be associated with increased testosterone.
- Can be malignant in adults.[1]
- May be seen in the ovary.[2]
Clinical:[1]
- +/-Elevated testosterone.
- Rarely elevated estradiol.
- ACTH low.
Gross
- Solid, lobulated.
- Red/tan.
- Typically 3-5 cm.[1]
Image:
Microscopic
Features:[3]
- Vacuolization (cytoplasm) - key feature.
- Cytoplasm - clear to eosinophilic - important.
- Usually eosinophilic.
- Reinke crystals - classic finding, usually not present.
- Cylindrical crystalloid eosinophilic cytoplasmic bodies.
- Nucleoli common.
- Round nuclei.
DDx:
- Spermatocytic seminoma - may have eosinophilic cytoplasm.
- Pregnancy luteoma - occurs during pregnancy, as the name implies.
- Leydig cell hyperplasia.
- Granular cell tumour.[1]
Images
Leydig cell tumour - low mag. (WC)
Leydig cell tumour - intermed. mag. (WC)
Leydig cell tumour - high mag. (WC)
www:
IHC
- Inhibin-alpha +ve.
- Calretinin +ve.[4][5]
- Melan A +ve.[6]
- AKA MART-1.
- Expressed in melanoma, adrenal tissue, steroid-secreting tumours.
- Vimentin +ve.[1]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Al-Agha, OM.; Axiotis, CA. (Feb 2007). "An in-depth look at Leydig cell tumor of the testis.". Arch Pathol Lab Med 131 (2): 311-7. doi:10.1043/1543-2165(2007)131[311:AILALC]2.0.CO;2. PMID 17284120.
- ↑ Yetkin, DO.; Demirsoy, ET.; Kadioglu, P. (Apr 2011). "Pure leydig cell tumour of the ovary in a post-menopausal patient with severe hyperandrogenism and erythrocytosis.". Gynecol Endocrinol 27 (4): 237-40. doi:10.3109/09513590.2010.490611. PMID 20518640.
- ↑ Zhou, Ming; Magi-Galluzzi, Cristina (2006). Genitourinary Pathology: A Volume in Foundations in Diagnostic Pathology Series (1st ed.). Churchill Livingstone. pp. 581. ISBN 978-0443066771.
- ↑ URL: http://www.antibodybeyond.com/reviews/cell-markers/leydig-cell-marker.htm. Accessed on: 18 May 2010.
- ↑ Bar-Shira Maymon B, Yavetz H, Yogev L, et al. (2005). "Detection of calretinin expression in abnormal immature Sertoli cells in non-obstructive azoospermia". Acta Histochem. 107 (2): 105–12. doi:10.1016/j.acthis.2005.02.002. PMID 15950053.
- ↑ Yao DX, Soslow RA, Hedvat CV, Leitao M, Baergen RN (September 2003). "Melan-A (A103) and inhibin expression in ovarian neoplasms". Appl. Immunohistochem. Mol. Morphol. 11 (3): 244–9. PMID 12966351.