Follicular pancreatitis: A rare pancreatic inflammatory pseudotumor

W. James Tom, Xiangdong Xu, Noushin Vahdat, Fiona Cassidy, Lejla Aganovic

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Inflammatory pseudotumors imitate neoplasms on imaging but actually represent focal inflammation. We report a case of follicular pancreatitis, which is a recently recognized distinct form of mass-forming focal chronic pancreatitis pathologically characterized by lymphoid infiltration with abundant reactive germinal centers. In our patient, follicular pancreatitis manifested as a pancreatic tail mass that was resected due to imaging findings, which were suggestive of pancreatic malignancy. We performed a literature review of this rare condition and present a summary of reported imaging findings. The most distinguishing feature from pancreatic adenocarcinoma is the enhancement pattern, as follicular pancreatitis enhances more than the surrounding pancreatic parenchyma on delayed post-contrast images which is unusual for pancreatic adenocarcinoma. If this benign diagnosis is suggested on imaging, unnecessary surgery and its potential complications may be avoided.

Original languageEnglish (US)
Pages (from-to)39-44
Number of pages6
JournalClinical Imaging
Volume59
Issue number1
DOIs
StatePublished - Jan 2020
Externally publishedYes

Keywords

  • Chronic pancreatitis
  • Follicular pancreatitis
  • Mass-forming pancreatitis

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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