The ultrasonographic medullary "rim sign" versus medullary "band sign" in cats and their association with renal disease.
feline
kidney
medulla
ultrasound
Journal
Journal of veterinary internal medicine
ISSN: 1939-1676
Titre abrégé: J Vet Intern Med
Pays: United States
ID NLM: 8708660
Informations de publication
Date de publication:
Sep 2020
Sep 2020
Historique:
received:
12
01
2020
revised:
04
08
2020
accepted:
12
08
2020
pubmed:
6
9
2020
medline:
29
6
2021
entrez:
5
9
2020
Statut:
ppublish
Résumé
Medullary rim sign (MRS) refers to a hyperechoic line in the renal medulla, reported on ultrasound examination (US) in both dogs and cats with and without kidney disease (KD). To describe the different aspects of MRS in cats and to assess its association with KD. Cats that underwent US examination, with MRS (study group) with and without KD and without MRS with and without KD (control groups). Retrospective case-control study: cats with MRS, with or without KD (rim sign groups) and cats without MRS, with or without KD (control groups). Ultrasonographic images were blindly reviewed with attention given to the thickness and margins of the MRS recorded. Eighty-four cats with MRS were included and 60 cats recruited for each control group. The MRS had 2 distinct aspects: a thin hyperechoic line with well-defined margins (MRS-line) in 50/84 cats (59%) and a thick hyperechoic band with ill-defined margins (MRS-band) in 34/84 cats (41%). Twenty of 50 (40%) cats with MRS-line and 25/34 (74%) of cats with MRS-band had KD. The frequency of MRS-line was higher in cats without KD, whereas the presence of MRS-band was more frequent in cats with KD (P = .003). A thick hyperechoic ill-defined band (for which the term medullary band sign is proposed) was more frequently associated with KD, whereas a thin hyperechoic well-defined line (true MRS) may be seen in cats with or without KD.
Sections du résumé
BACKGROUND
BACKGROUND
Medullary rim sign (MRS) refers to a hyperechoic line in the renal medulla, reported on ultrasound examination (US) in both dogs and cats with and without kidney disease (KD).
OBJECTIVE
OBJECTIVE
To describe the different aspects of MRS in cats and to assess its association with KD.
ANIMALS
METHODS
Cats that underwent US examination, with MRS (study group) with and without KD and without MRS with and without KD (control groups).
METHODS
METHODS
Retrospective case-control study: cats with MRS, with or without KD (rim sign groups) and cats without MRS, with or without KD (control groups). Ultrasonographic images were blindly reviewed with attention given to the thickness and margins of the MRS recorded.
RESULTS
RESULTS
Eighty-four cats with MRS were included and 60 cats recruited for each control group. The MRS had 2 distinct aspects: a thin hyperechoic line with well-defined margins (MRS-line) in 50/84 cats (59%) and a thick hyperechoic band with ill-defined margins (MRS-band) in 34/84 cats (41%). Twenty of 50 (40%) cats with MRS-line and 25/34 (74%) of cats with MRS-band had KD. The frequency of MRS-line was higher in cats without KD, whereas the presence of MRS-band was more frequent in cats with KD (P = .003).
CONCLUSIONS AND CLINICAL IMPORTANCE
CONCLUSIONS
A thick hyperechoic ill-defined band (for which the term medullary band sign is proposed) was more frequently associated with KD, whereas a thin hyperechoic well-defined line (true MRS) may be seen in cats with or without KD.
Identifiants
pubmed: 32888347
doi: 10.1111/jvim.15878
pmc: PMC7517514
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1932-1939Informations de copyright
© 2020 The Authors. Journal of Veterinary Internal Medicine published by Wiley Periodicals LLC on behalf of American College of Veterinary Internal Medicine.
Références
J Feline Med Surg. 2013 Sep;15 Suppl 1:15-27
pubmed: 23999183
J Feline Med Surg. 2013 Oct;15(10):849-57
pubmed: 23413268
Vet Radiol Ultrasound. 2013 Nov-Dec;54(6):652-8
pubmed: 23738847
Anat Histol Embryol. 2008 Oct;37(5):383-6
pubmed: 18513275
Am J Vet Res. 1989 Jun;50(6):860-3
pubmed: 2475043
J Am Vet Med Assoc. 1991 Aug 15;199(4):492-6
pubmed: 1917665
J Feline Med Surg. 2016 Mar;18(3):219-39
pubmed: 26936494
Vet Clin Pathol. 2006 Mar;35(1):8-17
pubmed: 16511785
J Feline Med Surg. 2018 Oct;20(10):948-954
pubmed: 29019448
J Vet Intern Med. 2020 Sep;34(5):1932-1939
pubmed: 32888347
Vet Rec. 2020 May 16;186(16):533
pubmed: 31748423
J Small Anim Pract. 2000 Jun;41(6):235-42
pubmed: 10879400
Am J Vet Res. 1999 Apr;60(4):405-9
pubmed: 10211680
Clin Exp Pharmacol Physiol. 2011 Jul;38(7):474-80
pubmed: 21545630
Am J Vet Res. 1989 Aug;50(8):1370-6
pubmed: 2675698
Vet Radiol Ultrasound. 2000 Mar-Apr;41(2):164-6
pubmed: 10779077
Vet Pathol. 2016 Mar;53(2):309-26
pubmed: 26869151
Am J Vet Res. 2000 Sep;61(9):1016-20
pubmed: 10976729