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2019 | 78 | 4 |

Tytuł artykułu

Is the right testis more affected by cryptorchidism than the left testis? An ultrasonographic approach in dogs of different sizes and breeds

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Background: Considered the most common congenital testicular abnormality of companion animals and a predisposition factor to the development of testicular neoplasia, cryptorchidism is defined as the non-descent of one or both testes to their normal anatomical location. Data on the occurrence of cryptorchidism in Brazil are scarce. The purpose of this work was to verify the occurrence of cryptorchidism in dogs of different sizes and breeds. Materials and methods: Cryptorchidism identification was carried out by ultrasound scanning, from November, 1994 to March, 2007, at the Centre for Veterinarian Diagnosis and Support (Centro de Apoio e Diagnóstico Veterinário — CAD), in Rio de Janeiro. 4924 male dogs of different breeds were examined, revealing 403 (8.2%) cryptorchidism. Results: In this study, occurrence took place more often on the right testicle (59.5%), more frequently displaying inguinal localisation (59.5%) and unilateral occurrence (70%). Regarding bilateral presentation, the symmetrical form was the most common (86.8%). Cryptorchidism was more common in the inguinal region of dog of small sized breeds and in the abdominal region in dogs of medium- and large-sized breeds. Conclusions: Ultrasound scan proved a valuable diagnosis tool for cryptorchid testes, giving precise localisation and parenchymal changes thus leading to a safe clinical treatment. (Folia Morphol 2019; 78, 4: 847–852)

Słowa kluczowe

Wydawca

-

Czasopismo

Rocznik

Tom

78

Numer

4

Opis fizyczny

p.847-852,fig.,ref.

Twórcy

  • Autonomous Veterinarian, Centre for Veterinarian Diagnosis and Support (Centro de Apoio e Diagnostico Veterinario - CAD), Rio de Janeiro, Brazil
autor
  • ²Veterinarian Radiology and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, UNESP, Botucatu, Sao Paulo, Brazil
autor
  • ²Veterinarian Radiology and Animal Reproduction Department, School of Veterinary Medicine and Animal Science, UNESP, Botucatu, Sao Paulo, Brazil
  • Federal University of Acre, Brazil
  • Federal University of Pampa, Uruguaiana, Brazil
  • Morphology Department, Fluminense Federal University, Rio de Janeiro, Brazil
  • Human and Animal Anatomy Department, Rural Federal University of Rio de Janeiro, Brazil

Bibliografia

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  • 10. Hutson JM, Southwell BR, Li R, et al. The regulation of testicular descent and the effects of cryptorchidism. Endocr Rev. 2013; 34(5): 725–752, doi: 10.1210/er.2012-1089, indexed in Pubmed: 23666148.
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  • 13. Khan FA, Gartley CJ, Khanam A. Canine cryptorchidism: An update. Reprod Domest Anim. 2018; 53(6): 1263–1270, doi: 10.1111/rda.13231, indexed in Pubmed: 29956390.
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  • 18. Ortega-Pacheco A, Rodríguez-Buenfil JC, Segura-Correa JC, et al. Pathological conditions of the reproductive organs of male stray dogs in the tropics: prevalence, risk factors, morphological findings and testosterone concentrations. Reprod Domest Anim. 2006; 41(5): 429–437, doi: 10.1111/j.1439-0531.2006.00688.x, indexed in Pubmed: 16984349.
  • 19. Pendergrass TW, Hayes HM. Cryptorchism and related defects in dogs: epidemiologic comparisons with man. Teratology. 1975; 12(1): 51–55, doi: 10.1002/tera.1420120107, indexed in Pubmed: 240213.
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  • 25. Su S, Farmer PJ, Li R, et al. Regression of the mammary branch of the genitofemoral nerve may be necessary for testicular descent in rats. J Urol. 2012; 188(4 Suppl): 1443–1448, doi: 10.1016/j.juro.2012.02.041, indexed in Pubmed: 22906642.
  • 26. Thonneau PF, Gandia P, Mieusset R, et al. Cryptorchidism: incidence, risk factors, and potential role of environment; an update. J Androl. 2003; 24(2): 155–162, indexed in Pubmed: 12634298.
  • 27. Yates D, Hayes G, Heffernan M, et al. Incidence of cryptorchidism in dogs and cats. Vet Rec. 2003; 152(16): 502–504, doi: 10.1136/vr.152.16.502, indexed in Pubmed: 12733559.
  • 28. Zar J. Biostatistical analysis. 4th Ed., New Jersey 1999: 563–565.
  • 29. Zhao X, Du ZQ, Rothschild MF. An association study of 20 candidate genes with cryptorchidism in Siberian Husky dogs. J Anim Breed Genet. 2010; 127(4): 327–331, doi: 10.1111/j.1439-0388.2010.00859.x, indexed in Pubmed: 20646120.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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