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Open AccessArticle

Sonographic Evaluation of Medial Iliac Lymph Nodes-to-Aorta Ratio in Dogs

Department of Veterinary Sciences, School of Veterinary Medicine, University of Pisa, 56100 Pisa, Italy
Vet Hospital H24, 50100 Firenze, Italy
Author to whom correspondence should be addressed.
Vet. Sci. 2020, 7(1), 22;
Received: 13 December 2019 / Revised: 27 January 2020 / Accepted: 6 February 2020 / Published: 11 February 2020
(This article belongs to the Special Issue Italian Society of the Veterinary Sciences SISVet 2019)
Medial iliac lymph nodes drain many districts and are easy to identify during an ultrasound examination of the abdomen. Since there are no reference values for their size in healthy dogs, the aim of this work was to evaluate the size of the medial iliac lymph nodes by using a ratio with the aortic diameter and find a reference range. The population was divided into group A (healthy dogs) and group B, with diseases of the medial iliac lymph nodes. The ratio of length, height and thickness of the medial iliac lymph nodes with the diameter of the aorta were calculated and underwent statistical analysis, p < 0.05 was considered statistically significant. Sixty-three patients were enrolled in group A, and 37 in group B. Significant differences were found between the ratio of sick and healthy patients and neoplastic and healthy patients. No significant difference was found between healthy and inflammatory patients. The best cut-off value to discriminate sick and healthy patients was 0.57, with a sensitivity of 78% and a specificity of 71%. The cut-off value of neoplastic and healthy patients was 0.69, with a sensitivity of 89.47% and a specificity of 84.13%. This value is highly predictive of neoplasia.
Keywords: ultrasonography; dog; medial iliac lymph node; aorta; ratio ultrasonography; dog; medial iliac lymph node; aorta; ratio
MDPI and ACS Style

Citi, S.; Oranges, M.; Arrighi, E.; Meucci, V.; Della Santa, D.; Tommaso, M. Sonographic Evaluation of Medial Iliac Lymph Nodes-to-Aorta Ratio in Dogs. Vet. Sci. 2020, 7, 22.

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