Abstract #1666

Differentiation of Pancreatic Head Ductal Adenocarcinoma from Inflammatory Pancreatic Pseudomass by MR Cholangio-pancreatography: Utility of the Duct-interrupted, Corona and Attraction Signs

Alejandro Garces-Descovich¹, Kevin Beker¹, Leo Tsai¹, Karen Lee¹, Tarek Hegazi¹, Alexander Brook², Adrian Jaramillo-Cardoso¹, and Koenraad Mortele¹

¹Division of Body MRI, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States, ²Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States

To properly treat and determine a truthful prognosis, accurate pancreatic head mass differentiation is fundamental. Pancreatic ductal adenocarcinoma (PDAC) of the head and inflammatory pancreatic pseudomass (IPP) simulate significantly to each other in clinical imaging. We proposed the use of three radiological signs ("duct-interrupted”, “corona”, and “attrition” signs) on magnetic resonance cholangio-pancreatography (MRCP). The proposed signs were assessed by three blinded radiologist, demonstrating high specificity for diagnosing PDAC by the “duct-interrupted” and “corona” signs, while good specificity of the “attraction” sign to identify IPP.

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