Arrowhead Sign

Gastroenterology Segmental dilatation of bile ducts, with sharp tight proximal stenosis, conical tapering, and parenchymal atrophy, seen by CT in patients with recurrent pyogenic cholangitis
Imageing Focal thickening of colonic wall with an arrowhead-shaped lumen pointing to inflamed diverticula, seen in one-fourth of patients
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
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The "arrowhead sign" represents a secondary sign of appendicitis and has been shown to have a sensitivity of roughly 30%.
Appendicitis: Use of arrowhead sign for diagnosis at CT.
Classic signs in gastrointestinal radiology
Pericecal inflammatory changes and cecal wall thickening may create the arrowhead sign of appendicitis.
Stump appendicitis

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