Aortic Thrombosis in Three Calves withEscherichia coliSepsis

Antemortem diagnosis of external iliac arterial thromboembolism in a calf using contrast-enhanced computed tomography: a case report

A 28-day-old Holstein calf with astasia (i.e., right hind limb flaccid paralysis) was referred to Large Animal Veterinary Educational Center. Thoracic radiographs showed an alveolar pattern and air bronchograms indicating pneumonia, whereas skeletal radiography showed muscle atrophy of the right hind limb but no abnormalities in the coxofemoral and stifle joints. Contrast-enhanced computed tomography revealed the pulmonary abscess in the right cranial pulmonary lobe and a thrombus (5 × 5 × 20 mm) in the right external iliac artery distal to the bifurcation of the abdominal aorta. These findings were confirmed via pathological examination. Streptococcus bovis/equinus complex colonies were isolated from the thrombus and pulmonary abscess. Thus, the pulmonary abscess was considered the infectious source of the thromboembolism in the right external iliac artery. Arterial thromboembolism should be included in the differential diagnoses in calves with astasia but without radiographic skeletal abnormalities.

Poor mineral intake leads to lameness and ruptured tendons in calves

Ruptured calcanean tendons in 10-month-old calvesMalignant catarrhal fever in a yearling bullockAortic thromboembolism in a four-day-old calfEpitheliogenesis imperfecta in lambsInfectious laryngotracheitis in backyard flocks These are among matters discussed in the disease surveillance report for April 2016 from SAC Consulting: Veterinary Services (SAC C VS).