Kidney sweat sign
Last revised by KW Westerburg on 3 Dec 2020
Citation, DOI, disclosures and article data
Citation:
Skandhan A, Shah V, Bell D, et al. Kidney sweat sign. Reference article, Radiopaedia.org (Accessed on 23 Apr 2024) https://doi.org/10.53347/rID-25555
Permalink:
rID:
25555
Article created:
29 Oct 2013,
Avni K P Skandhan
Disclosures:
At the time the article was created Avni K P Skandhan had no recorded disclosures.
View Avni K P Skandhan's current disclosures
Last revised:
3 Dec 2020,
KW Westerburg
Disclosures:
At the time the article was last revised KW Westerburg had no recorded disclosures.
View KW Westerburg's current disclosures
Revisions:
7 times, by
7 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Sweating kidney sign
- Renal sweat sign
The kidney sweat sign refers to the presence of thin, hypoechoic, extracapsular fluid collections around kidneys in renal failure patients. This fluid is thought to represent perirenal edema. It can be appreciated on ultrasound, CT and MRI.
Differential diagnosis
References
- 1. Dyer RB, Chen MY, Zagoria RJ. Classic signs in uroradiology. Radiographics. 2004;24 Suppl 1 (suppl 1): S247-80. Radiographics (full text) - doi:10.1148/rg.24si045509 - Pubmed citation
- 2. Yassa NA, Peng M, Ralls PW. Perirenal lucency ("kidney sweat"): a new sign of renal failure. AJR Am J Roentgenol. 1999;173 (4): 1075-7. doi:10.2214/ajr.173.4.10511182 - Pubmed citation