Peer-reviewed veterinary case report
Perivascular wall tumour presenting as pastern mass in a Standardbred gelding.
- Journal:
- Australian veterinary journal
- Year:
- 2023
- Authors:
- Stutsel, M et al.
- Affiliation:
- Agnes Banks Equine Clinic · United Kingdom
- Species:
- horse
Plain-English summary
A 2-year-old Standardbred gelding was taken to the vet because he had a lump on the inside of his right front leg, just above the hoof, and he was getting more and more lame. The lump felt firm and had normal skin over it. An ultrasound showed that the lump was smooth and contained, located near important tendons and blood vessels. Unfortunately, the outlook for the horse's future athletic ability was poor without surgery or chemotherapy, and financial limitations meant that further tests and treatments couldn't be done, so the horse was put to sleep. After he passed, further tests confirmed that the lump was a rare type of tumor called a perivascular wall tumor, which had never been reported in horses before.
Abstract
A 2-year-old Standardbred gelding was referred for a mass on the palmaromedial right front pastern which was accompanied by progressively worsening lameness. The mass was firm to palpation and covered by normal skin. Ultrasonographically, a smooth encapsulated mass was present, medial to the flexor tendons and palmar to the neurovascular bundle. Because of a poor prognosis for future athletic performance without surgical or chemotherapeutic intervention and economic constraints preventing further diagnostics and treatment, the horse was euthanised. Post-mortem magnetic resonance imaging, histopathology and immunohistochemistry revealed the mass to be a perivascular wall tumour, the first record of such a neoplasia in the horse.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/37574712/