Difference between revisions of "Undescended testis"
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'''Undescended testis''', also '''cryptorchidism''', is when the [[testis]] fails to descend into the [[scrotum]] - from it embryological origin in the abdomen. | '''Undescended testis''', also '''cryptorchidism''', is when the [[testis]] fails to descend into the [[scrotum]] - from it embryological origin in the abdomen. | ||
==General== | |||
*Right more common than left. | |||
**In a larger series: 218 on left side, 459 right side and 96 bilateral.<ref>{{cite journal |authors=You J, Li G, Chen H, Wang J, Li S |title=Laparoscopic orchiopexy of palpable undescended testes_ experience of a single tertiary institution with over 773 cases |journal=BMC Pediatr |volume=20 |issue=1 |pages=124 |date=March 2020 |pmid=32178653 |pmc=7075009 |doi=10.1186/s12887-020-2021-6 |url=}}</ref> | |||
==Microscopic== | |||
Four patterns are described by Nistal ''et al.'':<ref>{{cite journal |authors=Nistal M, Paniagua R, Díez-Pardo JA |title=Histologic classification of undescended testes |journal=Hum Pathol |volume=11 |issue=6 |pages=666–74 |date=November 1980 |pmid=6108912 |doi=10.1016/s0046-8177(80)80078-5 |url=}}</ref> | |||
*Type I cases testes with minimal lesions. | |||
*Type II cases marked germinal hypoplasia as well as slight or marked tubular hypoplasia. | |||
*Type III cases diffuse tubular hypoplasia. | |||
*Type IV diffuse Sertoli cell hyperplasia. | |||
DDx: | |||
*[[Germ cell neoplasia in situ]]. | |||
==Sign out== | |||
<pre> | |||
A. Right Testis, Orchiectomy: | |||
- Benign testis with germ cell hypoplasia, absent Leydig cells and absent spermatogenesis. | |||
- Unremarkable epididymis. | |||
- NEGATIVE for germ cell neoplasia. | |||
Comment: | |||
The findings are compatible with an undescended testis. | |||
</pre> | |||
==See also== | ==See also== | ||
*[[Testicular atrophy]]. | *[[Testicular atrophy]]. | ||
==References== | |||
{{Reflist|1}} | |||
[[Category:Diagnosis]] | [[Category:Diagnosis]] | ||
Latest revision as of 15:37, 28 May 2026
Undescended testis, also cryptorchidism, is when the testis fails to descend into the scrotum - from it embryological origin in the abdomen.
General
- Right more common than left.
- In a larger series: 218 on left side, 459 right side and 96 bilateral.[1]
Microscopic
Four patterns are described by Nistal et al.:[2]
- Type I cases testes with minimal lesions.
- Type II cases marked germinal hypoplasia as well as slight or marked tubular hypoplasia.
- Type III cases diffuse tubular hypoplasia.
- Type IV diffuse Sertoli cell hyperplasia.
DDx:
Sign out
A. Right Testis, Orchiectomy: - Benign testis with germ cell hypoplasia, absent Leydig cells and absent spermatogenesis. - Unremarkable epididymis. - NEGATIVE for germ cell neoplasia. Comment: The findings are compatible with an undescended testis.
See also
References
- ↑ You J, Li G, Chen H, Wang J, Li S (March 2020). "Laparoscopic orchiopexy of palpable undescended testes_ experience of a single tertiary institution with over 773 cases". BMC Pediatr 20 (1): 124. doi:10.1186/s12887-020-2021-6. PMC 7075009. PMID 32178653. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7075009/.
- ↑ Nistal M, Paniagua R, Díez-Pardo JA (November 1980). "Histologic classification of undescended testes". Hum Pathol 11 (6): 666–74. doi:10.1016/s0046-8177(80)80078-5. PMID 6108912.