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MOST DOGS WITH MEDULLARY RIM SIGN ON ULTRASONOGRAPHY HAVE NO DEMONSTRABLE RENAL DYSFUNCTION
Author(s) -
Mantis Panagiotis,
Lamb Christopher R.
Publication year - 2000
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.2000.tb01471.x
Subject(s) - medicine , medullary cavity , echogenicity , subclinical infection , sign (mathematics) , renal medulla , medulla , pathology , kidney , ultrasonography , radiology , mathematical analysis , mathematics
The medullary rim sign is a distinct hyperechoic line in the renal medulla parallel to the corticomedullary junction that has been reported in dogs with a variety of renal diseases. To examine the association between medullary rim sign and renal disease, the medical records of thirty‐two dogs that had medullary rim sign were reviewed retrospectively. Eighteen dogs (56%) had no evidence of renal dysfunction; 14 (44%) had clinicopathological evidence of renal disease, including 6 (19%) that had hypercalcemic nephropathy. Most dogs (72%) in which medullary rim sign was the only ultrasonographic finding affecting the kidneys had no evidence of renal dysfunction. In contrast, 78% dogs that had medullary rim sign and other renal signs (reduced size, increased medullary echogenicity, and pyelectasia) had renal disease. On the basis of this study, the medullary rim sign appears to be a non–specific ultrasonographic sign; however, the possibility cannot be excluded that is a sentinel sign of subclinical renal disease.