Bladder vessel sign

Last revised by Khalid Alhusseiny on 2 May 2023

Bladder vessel sign refers to the visualization of tortuous flow voids on MRI traversing space between the urinary bladder and the uterus (vesicouterine space); which normally contains fat and is devoid of blood vessels.

The sign is seen in the case of placenta accreta spectrum disorders, where there is an extrauterine spread of invasive placenta.

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