Peer-reviewed veterinary case report
Clinicopathological features of an equine ovarian teratoma.
- Journal:
- Reproduction in domestic animals = Zuchthygiene
- Year:
- 2004
- Authors:
- Catone, G et al.
- Affiliation:
- Department of Veterinary Science · Italy
- Species:
- horse
Plain-English summary
This study looked at a 4-year-old female Andalusian horse that had a mature cystic ovarian teratoma, which is a type of tumor that can contain different types of tissues. The tumor was found in her left ovary during a check-up for breeding soundness and was described as hard with varying textures. To confirm the diagnosis, a minimally invasive procedure called laparoscopy was done, followed by surgery to remove the affected ovary while the horse was standing. The tumor contained a large cyst filled with hair and oily material, along with smaller cysts that had mucus, and there were also areas with bone and cartilage. The examination of the tissue showed that it contained various types of mature tissues not normally found in the ovary, including skin-like and lung-like structures. The treatment was successful in removing the tumor.
Abstract
The present study describes the clinicopathological features of a mature cystic ovarian teratoma occurred in a 4 year old, cyclic, nulliparous Andalusian mare. The mass was discovered in the left ovary during a breeding soundness examination, and was hard in consistency and variously echogenic. Laparoscopy was performed to confirm the neoplastic change, followed by a unilateral laparotomic ovariectomy in the standing animal. On the cut surface the teratomatous ovary showed a large cyst filled with hair and sebaceous material and three small cysts containing mucous fluid, surrounded by solid areas where bone and cartilage could be recognized. Exceptionally, functional remnants of the ovary, including small follicles and a diestral corpus luteum were found near the tubal extremity. Histology revealed mature tissues foreign to the ovary including stratified squamous and respiratory epithelia, mucous, sebaceous and sweat glands, muscle fibres, fat and nervous tissue. The appearance of tracheal and lung architecture was occasionally observed.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/15065985/