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Imaging features of pancreatic metastases: A comparison with pancreatic ductal adenocarcinoma

Published:February 06, 2018DOI:https://doi.org/10.1016/j.clinimag.2018.01.016

      Highlights

      • Pancreatic metastases are mainly from lung and renal cell carcinoma.
      • Metastases frequently show well-defined or lobulated margins and rim enhancement.
      • Metastases rarely show vascular invasion, pancreatic atrophy, or duct dilatation.
      • Imaging might help to differentiate pancreatic metastases from adenocarcinoma.

      Abstract

      Purpose

      To compare imaging features of pancreatic metastases (PM) with those of pancreatic ductal adenocarcinomas (PDAC).

      Methods

      CT and MR scans of 24 patients with 54 PM and 30 patients with PDAC were reviewed to evaluate the imaging features, which were compared by using a Chi square test.

      Results

      We found a statistically significant difference between PM and PDAC based on location (P < 0.001), margins (P < 0.001), arterial enhancement (P = 0.004), rim enhancement (P < 0.001), pancreatic duct dilatation (P = 0.01), common bile duct dilatation (P = 0.003), vascular involvement (P = 0.02), parenchymal atrophy (P < 0.001), peripancreatic fluid (P = 0.03).

      Conclusion

      Imaging features might be helpful to differentiate PM from PDAC.

      Keywords

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