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.

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.

See also

References

  1. ↑ 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/.
  2. ↑ 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.
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