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Abdominal Radiology

, Volume 42, Issue 11, pp 2652–2674 | Cite as

Paraduodenal pancreatitis: benign and malignant mimics at MRI

  • Pardeep K. MittalEmail author
  • Peter Harri
  • Sadhna Nandwana
  • Courtney C. Moreno
  • Takashi Muraki
  • Volkan Adsay
  • Kelly Cox
  • Burcin Pehlivanoglu
  • Lauren F. Alexander
  • Argha Chatterjee
  • Frank H. Miller
Invited article

Abstract

Paraduodenal pancreatitis, also known as groove pancreatitis, is a rare form of chronic pancreatitis that masquerades as pancreatic adenocarcinoma affecting the pancreaticoduodenal groove, a potential space between the head of the pancreas, duodenum, and common bile duct. Two forms of groove pancreatitis have been described. The segmental form involves the pancreatic head with development of scar tissue within the groove, whereas the pure form affects the groove only, sparing the pancreatic head. Imaging findings of groove pancreatitis often overlap with primary duodenal, ampullary, or pancreatic neoplasms, which often results in a diagnostic challenge. In addition, paraduodenal pancreatitis can be mistaken for cystic pancreatic lesions, especially when there is involvement of the duodenal wall. Preoperative recognition of this entity is very important in order to avoid unnecessary procedures, although surgery, such as pancreaticoduodenectomy, may still be required to relieve obstructive symptoms. In this article, the pathophysiology and magnetic resonance imaging characteristics of paraduodenal pancreatitis and important benign and malignant mimics are discussed.

Keywords

Magnetic resonance imaging (MRI) Paraduodenal pancreatitis (PDP) Pancreatic adenocarcinoma 

Notes

Acknowledgements

The authors would like to express special thanks to Ms Nadezda Krasnoperova-Brown, Senior Graphic Designer, Communication and Creative Services, Department of Radiology and Imaging Sciences, Emory University School of Medicine, for drawing Fig. 1.

Compliance with ethical standards

Funding

No grant support was used for this manuscript.

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Pardeep K. Mittal
    • 1
    Email author
  • Peter Harri
    • 1
  • Sadhna Nandwana
    • 1
  • Courtney C. Moreno
    • 1
  • Takashi Muraki
    • 2
  • Volkan Adsay
    • 2
  • Kelly Cox
    • 1
  • Burcin Pehlivanoglu
    • 2
  • Lauren F. Alexander
    • 1
  • Argha Chatterjee
    • 3
  • Frank H. Miller
    • 3
  1. 1.Department of Radiology and Imaging SciencesEmory University School of MedicineAtlantaUSA
  2. 2.Department of PathologyEmory University School of MedicineAtlantaUSA
  3. 3.Department of Radiology Northwestern Memorial HospitalNorthwestern University Feinberg School of MedicineChicagoUSA

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