Peer-reviewed veterinary case report
Partial parotid sialoadenectomy in a horse with parotid ductal carcinoma: Surgical description and case report.
- Journal:
- Veterinary surgery : VS
- Year:
- 2022
- Authors:
- Zetterström, Sandra M et al.
- Affiliation:
- Auburn University · United States
- Species:
- horse
Plain-English summary
A 12-year-old American Quarter Horse gelding had a large swelling below his right ear, which turned out to be a tumor in his parotid salivary gland. The horse underwent surgery to remove the tumor, and during the procedure, some surrounding tissue was also taken out. After the surgery, he faced some challenges, including temporary facial nerve paralysis, trouble swallowing fibrous food, and issues with the surgical site healing. However, over time, he showed some improvement in nerve function, and a year later, there were no signs of the tumor coming back, allowing him to return to work. Overall, the surgery had a positive long-term outcome.
Abstract
OBJECTIVES: To describe the surgical findings, histopathological features, and long-term outcome for a horse with parotid salivary carcinoma. STUDY DESIGN: Case report ANIMALS: Twelve year old American Quarter Horse gelding. METHODS: The gelding was presented for a 10 × 10 cm swelling below the base of the right ear. Ultrasonographic examination revealed a mass involving the right parotid salivary gland. Incisional biopsy was consistent with parotid carcinoma. The tumor was marginally excised. The lateral wall of the guttural pouch was excised with the mass and was reconstructed with a porcine small intestinal submucosal (SIS) sheet. Cisplatin beads were implanted in the wound bed prior to closure. Firocoxib (0.1 mg/kg orally, daily, every 24 h) treatment was initiated. RESULTS: Postoperative complications included right-sided facial nerve paralysis, difficulty with deglutition of fibrous feeds, and surgical site dehiscence. Wound healing was achieved by second intention. Partial improvement in nerve function was observed within the first 6 months. At 12 months postparotidectomy, no sign of tumor reoccurrence or metastatic disease was present, and the gelding returned to work. CONCLUSION: Partial parotid sialoadenectomy was performed with a favorable long-term outcome. Regional anatomic knowledge is crucial.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/34850982/