<abstract xmlns="http://www.w3.org/1999/xhtml">

<sec id="j_jvetres-2020-0051_s_005">
<h3>Introduction</h3>
<p>This paper presents the results of the microscopic examination of dairy cow ovaries.</p>
</sec>
<sec id="j_jvetres-2020-0051_s_006">
<h3>Material and Methods</h3>
<p>The examined dairy cows were culled in a slaughterhouse. In all of them, pathological changes (n = 82) associated with adenomyosis had been previously diagnosed, and additionally in some cows (n = 18) so had mammary gland cell injury, including mastitis purulenta.</p>
</sec>
<sec id="j_jvetres-2020-0051_s_007">
<h3>Results</h3>
<p>There was vast variability among the investigated individuals in the degree of disease and type of pathological changes in the examined tissue specimens. In all examined ovaries, the most prominent lesions were neoplastic metaplasia of various cell types. They were PEComa, rete ovarii cell neoplasm, granulosa cell tumour, and a single case of haemangioma cavernosum, and the first of these types of ovarian tumours was the prominent neoplasia. In some cases, they grew simultaneously with the other types of tumours, but tumour tissue never extended beyond the ovarian capsule. Sometimes, the ovarian tumours were of microscopic volume, for instance the foci of granulosa cell tumours.</p>
</sec>
<sec id="j_jvetres-2020-0051_s_008">
<h3>Conclusion</h3>
<p>The lack of changes in ovarian anatomic structure, and minute neoplastic tissue foci, make it impossible to diagnose these lesions in the ovaries of living animals. The presented original data may be valuable in understanding the aetiology of dairy cow infertility, as well as in facilitating urgently needed research into findings new methods, which might be used in the diagnosis of neoplastic diseases <italic>ante mortem</italic>.</p>
</sec>
</abstract>

Introduction
This paper presents the results of the microscopic examination of dairy cow ovaries.


Material and Methods
The examined dairy cows were culled in a slaughterhouse. In all of them, pathological changes (n = 82) associated with adenomyosis had been previously diagnosed, and additionally in some cows (n = 18) so had mammary gland cell injury, including mastitis purulenta.


Results
There was vast variability among the investigated individuals in the degree of disease and type of pathological changes in the examined tissue specimens. In all examined ovaries, the most prominent lesions were neoplastic metaplasia of various cell types. They were PEComa, rete ovarii cell neoplasm, granulosa cell tumour, and a single case of haemangioma cavernosum, and the first of these types of ovarian tumours was the prominent neoplasia. In some cases, they grew simultaneously with the other types of tumours, but tumour tissue never extended beyond the ovarian capsule. Sometimes, the ovarian tumours were of microscopic volume, for instance the foci of granulosa cell tumours.


Conclusion
The lack of changes in ovarian anatomic structure, and minute neoplastic tissue foci, make it impossible to diagnose these lesions in the ovaries of living animals. The presented original data may be valuable in understanding the aetiology of dairy cow infertility, as well as in facilitating urgently needed research into findings new methods, which might be used in the diagnosis of neoplastic diseases ante mortem.

Ovarian neoplastic changes in dairy cows with adenomyosis - histopathological study

Journal of Veterinary Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Introduction
This paper presents the results of the microscopic examination of dairy cow ovaries.


Material and Methods
The examined dairy cows were culled in...

Ovarian neoplastic changes in dairy cows with adenomyosis - histopathological study

Published Online: Aug 11, 2020

Page range: 455 - 459

Received: Dec 29, 2019

Accepted: Jul 27, 2020

DOI: https://doi.org/10.2478/jvetres-2020-0051

Keywords
dairy cow, ovary neoplasia

© 2020 M. Katkiewicz et al. published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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Ovarian neoplastic changes in dairy cows with adenomyosis - histopathological study

Published Online: Aug 11, 2020

Page range: 455 - 459

Received: Dec 29, 2019

Accepted: Jul 27, 2020

DOI: https://doi.org/10.2478/jvetres-2020-0051

Keywordsdairy cow, ovary neoplasia

© 2020 M. Katkiewicz et al. published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

Fig. 10

Fig. 11

Fig. 12

Keywords
dairy cow, ovary neoplasia