Circumferential urethral prolapse

(A) This young girl developed urethral prolapse, manifesting with the characteristic doughnut sign, demonstrated here as a swollen round tissue with a central dimple that is smooth and friable.

(B) The smooth doughnut shape and central lumen are characteristic features of a urethral prolapse, which, if large or swollen, often conceals the vagina below it.

Panel A reproduced with permission from: Fleisher GR. Genitourinary emergencies. In: Atlas of Pediatric Emergency Medicine, Fleisher GR, Ludwig S, Baskin MN (Eds), Lippincott Williams & Wilkins 2004. Copyright © 2004 Lippincott Williams & Wilkins.

Graphic 105413 Version 7.0

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