Kerr kink

Last revised by Dr Daniel J Bell on 05 Jan 2020

The Kerr kink is a sign of renal tuberculosis. Scarring in the adjacent tissues due to chronic inflammation leads to a sharp kink at the pelviureteric junction (PUJ).

History and etymology

William "Bill" K Kerr, a Canadian urologist, described his eponymous sign in 1967 3.

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