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Home / Equine Research Bank / Can Vet J / Ovarian disorders: clinical and morphological observations i...
The Canadian veterinary journal = La revue veterinaire canadienne1982; 23(1); 6-14;

Ovarian disorders: clinical and morphological observations in 30 mares.

Abstract: A five year prospective study of equine ovarian problems requiring surgical correction was undertaken at the Ontario Veterinary College. Thirty mares were studied, of which 14 had granulosa cell tumors, six were with anovulatory persistent follicular "structures", five had ovarian hemotoma, two presented ovarian hypoplasia and one each of ovarian dysgerminoma, teratoma and abscessation. The clinical signs manifested by the affected animals were varied. The affected ovaries were removed via flank or midline laparotomy or through colpotomy. Their morphology was studied and representative portions of affected ovaries submitted for laboratory diagnosis. Postsurgical recovery and resumption of reproductive activity were satisfactory.
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Publication Date: 1982-01-01 PubMed ID: 7066859PubMed Central: PMC1790073
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article discusses a five-year study conducted at Ontario Veterinary College on equine ovarian disorders that required surgical intervention, spanning 30 cases. It covers a range of issues from granulosa cell tumors to ovarian hypoplasia, and presents the varied clinical signs, surgical techniques, and post-operative outcomes.

Research Objective

  • The main objective of this research was to investigate and analyze various equine ovarian disorders that demanded surgical correction. The study was a longitudinal five-year study involving 30 mares handled at the Ontario Veterinary College.

Clinical Observations

  • Of the thirty mares studied, the most common condition, observed in 14 mares, was granulosa cell tumors. Further, six mares were dealing with anovulatory persistent follicular “structures”.
  • Five mares showed signs of ovarian hemotoma, two mares presented with ovarian hypoplasia, and the remaining three suffered from ovarian dysgerminoma, teratoma, and abscessation, with one case reported for each condition.
  • The study found that the clinical signs exhibited by the animals were not uniform but varied based on the specific ovarian disorder affecting the mare.

Surgical Intervention

  • The research provides not only clinical observations but also looks at the therapeutic side. Surgical procedures were carried out to remove the affected ovaries.
  • The study utilized varied surgical methods based on the specific case scenario – flank or midline laparotomy or colpotomy, which denotes the operation’s location and how the surgeon gains access to the ovaries.

Morphological and Laboratory Study

  • Upon removal, the affected ovaries were studied for their morphological traits – the size, color, and other physical characteristics, which could be (immediately) visually identified.
  • Portions of the affected ovaries were submitted for laboratory examination for a more detailed analysis of the disease and verification of the initial diagnosis.

Post-surgical Outcomes

  • The final part of the research dealt with the outcomes post-surgery. The recovery of the mares was monitored, as well their return to reproductive activity.
  • The results were positive, indicating that surgical intervention is viable in addressing equine ovarian disorders, with satisfactory recovery and resumption of reproductive behavior.

Cite This Article

APA
Bosu WT, Van Camp SC, Miller RB, Owen RR. (1982). Ovarian disorders: clinical and morphological observations in 30 mares. Can Vet J, 23(1), 6-14.

Publication

The Canadian veterinary journal = La revue veterinaire canadienne
ISSN: 0008-5286
NlmUniqueID: 0004653
Country: Canada
Language: English
Volume: 23
Issue: 1
Pages: 6-14

Researcher Affiliations

Bosu, W T
    Van Camp, S C
      Miller, R B
        Owen, R R

          MeSH Terms

          • Animals
          • Female
          • Horse Diseases / surgery
          • Horses
          • Ovarian Diseases / surgery
          • Ovarian Diseases / veterinary
          • Ovarian Neoplasms / surgery
          • Ovarian Neoplasms / veterinary
          • Prospective Studies

          References

          This article includes 14 references
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          Citations

          This article has been cited 8 times.
          1. Straticò P, Hattab J, Guerri G, Carluccio A, Bandera L, Celani G, Marruchella G, Varasano V, Petrizzi L. Behavioral Disorders in Mares with Ovarian Disorders, Outcome after Laparoscopic Ovariectomy: A Case Series. Vet Sci 2023 Jul 25;10(8).
            doi: 10.3390/vetsci10080483pubmed: 37624270google scholar: lookup
          2. Dolin A, Schweiger P, Waselau M, Egerbacher M, Walter I. Immunohistochemical markers for equine granulosa cell tumors: a pilot study. J Equine Sci 2023 Jun;34(2):37-46.
            doi: 10.1294/jes.34.37pubmed: 37405069google scholar: lookup
          3. Hallman I, Karikoski N, Kareskoski M. The effects of obesity and insulin dysregulation on mare reproduction, pregnancy, and foal health: a review. Front Vet Sci 2023;10:1180622.
            doi: 10.3389/fvets.2023.1180622pubmed: 37152686google scholar: lookup
          4. Kim A, Sasaki N, Lee I, Seo JP. Comparison of intraoperative cardiorespiratory and behavioral responses to medetomidine combined with tramadol or butorphanol during standing laparoscopic ovariectomy in horses. J Vet Med Sci 2021 Apr 9;83(4):643-647.
            doi: 10.1292/jvms.20-0397pubmed: 33583912google scholar: lookup
          5. Browne NS, Scarratt WK, Robertson J. Hypertrophic osteopathy secondary to metastatic ovarian adenocarcinoma in a mare. Can Vet J 2016 Dec;57(12):1237-1241.
            pubmed: 27928168
          6. Lefebvre R, Theoret C, Doré M, Girard C, Laverty S, Vaillancourt D. Ovarian teratoma and endometritis in a mare. Can Vet J 2005 Nov;46(11):1029-33.
            pubmed: 16363331
          7. Cuccato M, Bertuglia A, Divari S, Brambilla E, Grieco V, Bollo E, Scaglione FE. Case report: Findings in ovaries development from an aborted equine fetus. Front Vet Sci 2024;11:1275220.
            doi: 10.3389/fvets.2024.1275220pubmed: 38818491google scholar: lookup
          8. Tommasa SD, Roth SP, Triebe T, Brehm W, Lohmann KL, Stöckle SD. Successful intra-abdominal resection of a 24 kg ovarian granulosa cell tumor in a Warmblood mare. Open Vet J 2023 Sep;13(9):1212-1218.
            doi: 10.5455/OVJ.2023.v13.i9.17pubmed: 37842112google scholar: lookup
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