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Journal of equine science2021; 32(4); 147-151; doi: 10.1294/jes.32.147

Equine nonneoplastic abnormal ovary in a draft mare with high serum anti-Müllerian hormone: a case study.

Abstract: We performed a standing hand-assisted laparoscopic ovariectomy in a draft mare that presented with high serum anti-Müllerian hormone (AMH) level and had an enlarged single cystic ovary. Histopathological examination revealed no tumor cell proliferation in the ovary, but the presence of a large ovarian cyst was confirmed. In the diagnosis of abnormal ovaries in mares, a comprehensive assessment should be performed, including the monitoring of ovarian morphology and biomarkers over time, to determine the disease prognosis and treatment plan. The case of this mare with a nonneoplastic abnormal ovary and increased serum AMH level was rare. We suggest that standing hand-assisted laparoscopic ovariectomy is useful for the removal of large ovaries in draft mares.
Publication Date: 2021-12-28 PubMed ID: 35023993PubMed Central: PMC8731685DOI: 10.1294/jes.32.147Google Scholar: Lookup
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  • Journal Article

Summary

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The research focuses on a rare case of a noncancerous ovary abnormality in a draft mare that was found to have notably high blood levels of the anti-Müllerian hormone (AMH). The mare was successfully treated with a type of minimally invasive surgery called standing hand-assisted laparoscopic ovariectomy.

Research Objective and Methodology

  • The aim of this research was to study a rare case of a draft mare with an enlarged single cystic ovary and a high level of serum anti-Müllerian hormone (AMH), a substance that gives doctors information about the number of an individual’s remaining egg-producing follicles.
  • The researchers utilized a surgical method known as standing hand-assisted laparoscopic ovariectomy, a procedure in which the ovary is removed by means of a small, lighted tube inserted through small incisions in the abdomen, while the mare is still standing.

Findings and Conclusion

  • The histopathological examination discovered the presence of a large ovarian cyst, while ruling out the presence of tumor cell proliferation in the ovary.
  • The elevated AMH level suggested that the mare was likely to have an increased number of small follicles, indicating ovarian dysfunction.
  • The study concludes that standing hand-assisted laparoscopic ovariectomy is a reliable method for removing enlarged ovaries in draft mares, especially when coupled with a comprehensive diagnosis process, including monitoring of ovarian morphology and biomarkers over time.

Significance

  • This case study is significant not just because of the rarity of the presented case, but also because it showcases an effective treatment methodology for the removal of large ovaries in draft mares.
  • It emphasizes the necessity for a comprehensive evaluation of abnormal ovaries in mares. This includes observing changes in ovarian morphology and biomarkers over time to accurately diagnose the condition and formulate a suitable treatment plan.
  • The study may help veterinary practitioners in diagnosing and treating similar cases. It also underscores the potential of AMH as a predictive marker for ovarian function and dysfunction.

Cite This Article

APA
Goto A, Tagami M, Kato F, Suzuki T, Yamaga T, Murase H, Sato F, Tsogtgerel M, Niikura T, Moriyama T, Chiba A, Watanabe KI, Tsuzuki N, Nambo Y. (2021). Equine nonneoplastic abnormal ovary in a draft mare with high serum anti-Müllerian hormone: a case study. J Equine Sci, 32(4), 147-151. https://doi.org/10.1294/jes.32.147

Publication

ISSN: 1340-3516
NlmUniqueID: 9503751
Country: Japan
Language: English
Volume: 32
Issue: 4
Pages: 147-151

Researcher Affiliations

Goto, Akira
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
Tagami, Masaaki
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
  • Shadai Horse Clinic, Hokkaido 059-1361, Japan.
Kato, Fumiki
  • Shadai Horse Clinic, Hokkaido 059-1361, Japan.
Suzuki, Tsukasa
  • Shadai Horse Clinic, Hokkaido 059-1361, Japan.
Yamaga, Takashi
  • Shadai Horse Clinic, Hokkaido 059-1361, Japan.
Murase, Harutaka
  • Equine Science Division, Hidaka Training and Research Center, Japan Racing Association, Hokkaido 057-0171, Japan.
Sato, Fumio
  • Clinical Veterinary Medicine Division, Equine Research Institute, Japan Racing Association, Tochigi 329-0412, Japan.
  • Department of Clinical Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan.
Tsogtgerel, Munkhtuul
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
  • Department of Clinical Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan.
Niikura, Tadamasa
  • Doctoral Program in Veterinary Medicine, Graduate School of Animal Husbandry, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
Moriyama, Tomoe
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
Chiba, Akiko
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
Watanabe, Ken-Ichi
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
Tsuzuki, Nao
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
Nambo, Yasuo
  • Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.
  • Department of Clinical Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, Gifu 501-1193, Japan.
  • Doctoral Program in Veterinary Medicine, Graduate School of Animal Husbandry, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan.

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This article includes 17 references
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Citations

This article has been cited 2 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