Ultrasonographic measurements of abdominal lymph nodes in growing puppies

https://doi.org/10.17221/216/2015-VETMEDCitation:Pugliese M., La Pietra A., Liotta L., Macri F., Palumbo Piccionello A., De Majo M. (2016): Ultrasonographic measurements of abdominal lymph nodes in growing puppies. Veterinarni Medicina, 61: 389-393.
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The sonographic appearance of the normal abdominal lymph nodes in adult dogs has been well described, but the data in puppies are scarce and of poor quality. The aim of the current study was to evaluate any differences in abdominal lymph node sonographic measurements in puppies of various sizes and to determine whether any differences were correlated with growth and weight gain during the first 10 weeks of life. By an approach based on prospective and serial measurements, length, width and thickness of jejunal, medial iliac and hypogastric nodes were obtained in twenty-one healthy puppies of various sizes, at six (T0), eight (T1) and ten (T2) weeks of age. The relationship between body weight and length, width and thickness of lymph nodes was evaluated using a Pearson correlation analysis. An ANOVA test was used to compare the measurements at different ages. Jejunal and iliac lymph nodes were the largest in large breed dogs. In large-sized puppies only the length of the jejunal lymph nodes correlated positively with width and body weight. Length of medial iliac lymph nodes correlated positively with width and body weight in all three sizes. None of the measurements of hypogastric lymph nodes were related to body weight. In large-sized puppies jejunal and iliac lymph nodes increased in length and width with age; in medium-sized puppies only iliac lymph nodes increased; in small-sized puppies jejunal and iliac lymph nodes significantly decreased in length and thickness. In conclusion, the lymph node sizes in young animals are directly related to body weight and do not decrease with growth during the first 10 weeks of life, except in small-sized puppies.
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