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Hyperattenuating ring sign (epiploic appendagitis)

Last revised by Ryan Thibodeau on 4 May 2024

The hyperattenuating ring sign is a sign that has been described with epiploic appendagitis and intraperitoneal focal fat infarction. It refers to a hyperattenuating ring of visceral peritoneum. In the setting of epiplogic appendagitis, the ring would surround a thrombosed vascular pedicle with a resultant associated central hyperdense spot sign.

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