Acquired pulmonic stenosis due to a compressing intrathoracic abscess in a Thoroughbred yearling

Sigrid Hyldahl Laursen, Gaby van Galen Verwilghen, Godelind Alma Wolf-Jäckel, Rikke Buhl

    Abstract

    A 12-month-old Thoroughbred filly was admitted for poor weight gain, intermittent fever, and distal limb edema. Initial clinical examination revealed tachycardia, tachypnea, and pyrexia. A loud holosystolic murmur was identified by cardiac auscultation, and thoracic auscultation identified bilateral diffuse crackles. Echocardiography demonstrated severe extrinsic pulmonic stenosis, enlargement of the right ventricle and compression of the left ventricle. Mediastinal ultrasound revealed a large, encapsulated, cavernous mass in the cranial thorax, compressing the heart. Bacterial culture of tracheal aspirates and aspirations of the intrathoracic mass yielded a pure culture of Streptococcus equi spp. zooepidemicus. Acquired pulmonic stenosis has not previously been reported in horses, whereas congenital pulmonic stenosis has. This case report demonstrates that in line with human medicine, pulmonic stenosis can be acquired because of thoracic masses compressing the pulmonic artery.

    Original languageEnglish
    JournalJournal of Equine Veterinary Science
    Volume35
    Issue number8
    Pages (from-to)692-696
    Number of pages5
    ISSN0737-0806
    DOIs
    Publication statusPublished - 1 Aug 2015

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