Lobster claw sign (kidney)

Last revised by Ayla Al Kabbani ◉ on 30 Nov 2019

Citation, DOI, disclosures and article data

Citation:

Niknejad M, Al Kabbani A, Gaillard F, et al. Lobster claw sign (kidney). Reference article, Radiopaedia.org (Accessed on 03 Oct 2023) https://doi.org/10.53347/rID-21577

DOI:

https://doi.org/10.53347/rID-21577

Permalink:

https://radiopaedia.org/articles/21577

rID:

21577

Article created:

31 Jan 2013, Mohammadtaghi Niknejad ◉

Disclosures:

At the time the article was created Mohammadtaghi Niknejad had no recorded disclosures.

View Mohammadtaghi Niknejad's current disclosures

Last revised:

30 Nov 2019, Ayla Al Kabbani ◉

Disclosures:

At the time the article was last revised Ayla Al Kabbani had no recorded disclosures.

View Ayla Al Kabbani's current disclosures

Revisions:

11 times, by 6 contributors - see full revision history and disclosures

Systems:

Urogenital

Tags:

refs, cases

Lobster claw sign refers to a urographic pattern of papillary excavation that may be seen with renal papillary necrosis.

The lobster claw sign occurs when there is excavation around the edge of the papilla and the contrast material that extends into this excavated region looks like the "claws" of a lobster when viewed en face.

This patterns of papillary excavation is most often seen with