Peer-reviewed veterinary case report
Clinical, cytogenetic and hormonal findings in a stallion with hypospadias--a case report.
- Journal:
- Veterinary journal (London, England : 1997)
- Year:
- 2007
- Authors:
- Bleul, U et al.
- Affiliation:
- Clinic of Reproductive Medicine
- Species:
- horse
Plain-English summary
This case involves a three-year-old Friesian stallion diagnosed with hypospadias, which means the opening of his urethra was not in the usual place. During the examination, the vet found that the penis was not fully formed and had a slit-like opening covered by a mucous membrane. Tests showed that his hormone levels were normal for a stallion, and his chromosomes were also typical. The stallion was castrated, and the tissue from his testicles looked normal under the microscope. Unfortunately, the exact cause of his condition remains unknown, but the treatment of castration was completed without any complications.
Abstract
This case report describes a three-year-old Friesian stallion with hypospadias. Physical examination revealed a ventrocaudal deviation of the shaft of the penis and an incomplete glans penis. The urethral opening was 4 cm in length, slit-like and had a mucous membrane covering. A short fold ran from the ventral aspect of the anus and ended with a non-pigmented hairless area of skin. A human choriongonadotropin (hCG)-stimulation test resulted in an increase in the plasma levels of estrogen sulfate and testosterone, indistinguishable from that of a normal stallion. The karyogram had a normal number of chromosomes at 2n=64. The stallion was castrated, and histological evaluation of the testicular tissue was unremarkable. In contrast to other animal species and human beings, hypospadias is a rare congenital abnormality in stallions, the cause of which could not be elucidated in our patient.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/16820309/