Keyhole sign (posterior urethral valves)
Last revised by Liz Silverstone on 9 Oct 2023
Citation, DOI, disclosures and article data
Citation:
Radswiki T, Silverstone L, Elfeky M, et al. Keyhole sign (posterior urethral valves). Reference article, Radiopaedia.org (Accessed on 16 Apr 2024) https://doi.org/10.53347/rID-12802
rID:
12802
Article created:
12 Jan 2011,
The Radswiki ◉
Disclosures:
At the time the article was created The Radswiki had no recorded disclosures.
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Last revised:
Disclosures:
At the time the article was last revised Liz Silverstone had no financial relationships to ineligible companies to disclose.
View Liz Silverstone's current disclosures
Revisions:
18 times, by
15 contributors -
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Synonyms:
- Keyhole signs (posterior urethral valves)
- Key hole sign (posterior urethral valves)
The keyhole sign is an ultrasonographic sign seen in boys with posterior urethral valves. It refers to the appearance of the proximal urethra (which is dilated) and an associated thick walled distended bladder which on ultrasound may resemble a keyhole.
References
- 1. Dyer R, Chen M, Zagoria R. Classic Signs in Uroradiology. Radiographics. 2004;24 Suppl 1(suppl_1):S247-80. doi:10.1148/rg.24si045509 - Pubmed
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Cases:
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