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Review
, 39 (2), 206-219

Common and Uncommon Benign Pancreatic Lesions Mimicking Malignancy: Imaging Update and Review

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Review

Common and Uncommon Benign Pancreatic Lesions Mimicking Malignancy: Imaging Update and Review

Ulysses S Torres et al. Semin Ultrasound CT MR.

Abstract

There is a broad range of inflammatory, pseudotumoral, and benign lesions that may masquerade as pancreatic malignancies, often representing a challenge to the radiologist. Unawareness of these entities can lead to inadequate differential diagnoses or misdiagnosis, with important prognostic and therapeutic consequences. The purpose of this article is to revisit a spectrum of lesions, varying from common to exceedingly rare nonmalignant, that may mimic malignant pancreatic neoplasms on imaging, identifying relevant features that may contribute to reaching the correct diagnosis. Representative cases include focal fatty replacement, intrapancreatic accessory spleen, pancreatic lobulation, lipoma, autoimmune pancreatitis, focal pancreatitis, eosinophilic pancreatitis, groove pancreatitis, hemangioma, intrapancreatic aneurysm, tuberculosis, and Castleman's disease.

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