Peer-reviewed veterinary case report
Mature teratoma arising from an undescended testis in a horse: comparison between ultrasonographic and morphological features.
- Journal:
- Folia morphologica
- Year:
- 2016
- Authors:
- Pasolini, M P et al.
- Species:
- horse
Plain-English summary
A 4-year-old Arabian horse that had an undescended testis (meaning the testis did not move down into the scrotum) was brought in for surgery to remove it. Before the surgery, an ultrasound showed a large, unusual mass in the area of the testis, which had both solid and fluid-filled parts. The ultrasound results suggested that the mass was a teratoma, a type of tumor, and this was confirmed after the tumor was surgically removed and examined under a microscope. The ultrasound was very helpful in planning the surgery, and the findings matched what was seen during the surgery.
Abstract
Scant information is available on the ultrasonographic appearance of different testicular tumours in the stallion. Preoperative ultrasound imaging and gross and microscopic features of a testicular teratoma in a horse is described. An asymptomatic 4 years old cryptorchid Arabian horse was admitted for orchiectomy. Combined transabdominal and inguinal ultrasound examination revealed a large complex ovoid mass, containing both solid and cystic elements with internal echoes, located dorsally to the superficial inguinal ring. Two main hypoechoic cavities divided by a linear hyperechoic septum were evident, with a hyperechoic circular structure inside the lumen of the largest one. A tumour of the undescended testis was suspected. Ultrasound findings guided a provisional diagnosis of teratoma that was confirmed by histology following surgical removal of the tumour. Due to the correspondence between ultrasonographic and morphological features, trans-abdominal ultrasonography was conclusive in the preoperative planning.
Find similar cases for your pet
PetCaseFinder finds other peer-reviewed reports of pets with the same symptoms, plus a plain-English summary of what was tried across them.
Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/26431049/