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Monorchidism in three colts.

E M Santschi1, J S Juzwiak, D E Slone

  • 1Peterson & Smith Equine Hospital, Ocala, FL 32674.

Journal of the American Veterinary Medical Association
|January 15, 1989
PubMed
Summary

Monorchid colts underwent castration for cryptorchidism. Surgical diagnosis of monorchidism involved locating an incomplete epididymis, with absence of testicular tissue confirmed by a human chorionic gonadotropin response test.

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Area of Science:

  • Veterinary Medicine
  • Reproductive Endocrinology

Background:

  • Cryptorchidism is a common condition in equine surgery.
  • Monorchidism, the absence of one testis, presents diagnostic challenges.

Observation:

  • Three monorchid colts were presented for cryptorchid castration.
  • Surgical findings included one normally descended testis and either a small abdominal testis or absence of testicular tissue with an incomplete epididymis.

Findings:

  • Monorchidism was diagnosed intraoperatively by identifying an incomplete epididymis without a testis.
  • Post-surgical confirmation of absent testicular tissue was achieved using a human chorionic gonadotropin (hCG) response test.

Implications:

  • This case series highlights diagnostic methods for equine monorchidism.
  • Accurate diagnosis and confirmation are crucial for successful surgical outcomes in cryptorchid horses.

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