title: ULTRASONOGRAPHIC FINDINGS IN 13 HORSES WITH LYMPHOMA.
abstract: Ultrasonography and radiography are commonly used for staging of lymphoma in horses, however there is little published information on imaging characteristics for horses with confirmed disease. The purpose of this retrospective, case series study was to describe ultrasonographic and radiographic findings for a group of horses with a confirmed diagnosis of lymphoma. A total of 13 horses were sampled. Lymphadenopathy (8/13), peritoneal effusion (6/13), splenic (6/13), and hepatic (5/13) lesions were the most frequently identified. The predominant splenic and hepatic ultrasonographic lesions were hypoechoic nodules, organomegaly, and changes in echogenicity. Digestive tract lesions were detected in three horses and these included focal thickening and decreased echogenicity of the small (2/13) and large intestinal (2/13) wall. Thoracic lesions were predominantly pleural effusion (4/13), lymphadenopathy (4/13), and lung parenchymal changes (3/13). Enlarged lymph nodes were detected radiographically (4/13) and/or ultrasonographically (2/13) in the thorax and ultrasonographically in the abdomen (7/13) and in the caudal cervical region (4/13). Findings supported the use of abdominal and thoracic ultrasonography for lymphoma staging in horses. Ultrasound landmarks for localizing cecal and caudal deep cervical lymph nodes were also provided.
authors.affiliation: Diagnostic Imaging Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
authors.forename: Valentin
authors.initials: V
authors.lastname: Janvier
authors.affiliation: Diagnostic Imaging Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
authors.forename: Laurence
authors.initials: L
authors.lastname: Evrard
authors.affiliation: Equine Clinical Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
authors.forename: Simona
authors.initials: S
authors.lastname: Cerri
authors.affiliation: Equine Clinical Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
authors.forename: Alexandra
authors.initials: A
authors.lastname: Gougnard
authors.affiliation: Diagnostic Imaging Section, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
authors.forename: Valeria
authors.initials: V
authors.lastname: Busoni
mesh_terms: D000818:Animals; D001202:Ascitic Fluid / Q000000981:diagnostic imaging*; D001530:Belgium; D005260:Female; D006734:Horse Diseases / Q000000981:diagnostic imaging*; D006736:Horses; D008099:Liver / Q000000981:diagnostic imaging* / Q000473:pathology; D008198:Lymph Nodes / Q000002:abnormalities / Q000000981:diagnostic imaging*; D000072281:Lymphadenopathy / Q000000981:diagnostic imaging / Q000662:veterinary*; D008223:Lymphoma / Q000000981:diagnostic imaging / Q000662:veterinary*; D008297:Male; D011859:Radiography / Q000662:veterinary; D012189:Retrospective Studies; D013154:Spleen / Q000000981:diagnostic imaging* / Q000473:pathology; D014463:Ultrasonography / Q000662:veterinary
keywords: equine; horse; lymphoma; neoplasia; radiography; ultrasonography