ABSTRACT
Intravascular pulmonary artery sarcomas in combination with myocardial metastasis are rare in dogs. We describe the radiographic, echocardiographic, and electrocardiographic-gated (ECG-gated) computed tomographic angiography (CTA) findings in a dog with pulmonary artery sarcoma. All imaging studies demonstrated severe main pulmonary artery enlargement. Echocardiography and ECG-gated CTA revealed a mass occluding the lumen of the right pulmonary artery. In addition, CTA revealed focal left ventricular myocardial contrast enhancement and parenchymal lung changes. Postmortem examination confirmed the presence of a large thrombus associated with arteriosclerosis and an intravascular sarcoma in the right pulmonary artery with metastases to the myocardium, lungs and brain.
Subject(s)
Dog Diseases/diagnostic imaging , Heart Neoplasms/veterinary , Myocardium/pathology , Pulmonary Artery/pathology , Sarcoma/veterinary , Vascular Neoplasms/veterinary , Animals , Dogs , Echocardiography/veterinary , Electrocardiography/veterinary , Female , Heart Neoplasms/diagnosis , Heart Neoplasms/secondary , Multimodal Imaging/veterinary , Oregon , Pulmonary Artery/diagnostic imaging , Radiography/veterinary , Sarcoma/diagnostic imaging , Tomography, X-Ray Computed/veterinary , Vascular Neoplasms/diagnostic imagingABSTRACT
Vascular ring anomalies (VRA) are relatively uncommon cardiovascular disorders in canine patients. The most common VRA is a persistent right aortic arch (PRAA) with a left ligamentum arteriosum, however various other vascular anomalies resulting in tracheoesophageal compression have also been reported. We report a case of a dog with a PRAA and left ligamentum arteriosum with a hypoplastic aberrant left subclavian artery resulting in asymmetric cervicobrachial circulation. Selective angiography and ECG-gated multi-detector computed tomography were utilized in the evaluation of these defects. The case presented represents a unique vascular anomaly of the aortic arch not previously described in veterinary medicine.
