Peer-reviewed veterinary case report
Myonecrosis and cutaneous infarction associated with Salmonella serovar Infantum infection in a horse.
- Journal:
- Journal of the American Veterinary Medical Association
- Year:
- 2004
- Authors:
- Pellegrini-Masini, Alessandra et al.
- Affiliation:
- Department of Clinical Studies · United States
- Species:
- horse
Plain-English summary
A 5-year-old Quarter Horse mare was taken to the vet because she had painful sores in her mouth, swelling in her legs, was losing weight, and seemed very weak. The swelling was particularly noticeable in her left hind leg, and she was limping on that leg. The vet found firm lumps on her neck, shoulder, elbow, and abdomen, and tests showed issues like low protein levels and signs of infection. An ultrasound suggested that there was damage and bleeding in her muscles, and a biopsy confirmed severe muscle inflammation and damage. Unfortunately, her condition got worse over time, and she was put to sleep; further examination revealed serious muscle damage and infections caused by Salmonella bacteria.
Abstract
A 5-year-old Quarter Horse mare was referred for evaluation of oral ulcers, limb edema, weight loss, and weakness. There was marked diffuse swelling extending from the stifle region to the tarsal region of the left hind limb, and the horse had a left hind limb lameness. Firm swellings ranging from 2 to 15 cm in diameter and consisting of nodules, plaques, and discrete masses were palpated on both sides of the neck, over the right shoulder region, over the left elbow region, and over the left caudoventral aspect of the abdomen. Laboratory abnormalities included hypoproteinemia, neutrophilia, and hyperfibrinogenemia. Results of ultrasonographic examination of the left hind limb and masses were suggestive of muscle edema, necrosis, and hemorrhage. Histologic examination of a biopsy specimen from a subcutaneous mass revealed necrotizing, suppurative myositis. The horse's condition gradually deteriorated, and the horse was euthanatized. Necropsy revealed myonecrosis, cutaneous infarcts, hepatic abscesses, and cholangitis. Salmonella serovar Infantum was cultured from liver and muscle lesions, and a diagnosis of Salmonella myonecrosis was made.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/15457666/