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.

中文翻译：

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模仿恶性肿瘤的常见和罕见良性胰腺病变：影像学更新和审查。

可能会伪装成胰腺恶性肿瘤的炎症，假瘤和良性病变范围很广，通常对放射科医生构成挑战。对这些实体的不了解可能会导致鉴别诊断不足或误诊，从而带来重要的预后和治疗后果。本文的目的是重新探讨从常见到极其罕见的非恶性病变的各种频谱，这些病变可以在影像学上模仿恶性胰腺肿瘤，从而确定可能有助于正确诊断的相关特征。代表性病例包括局灶性脂肪置换，胰内副脾，胰腺小叶，脂肪瘤，自身免疫性胰腺炎，局灶性胰腺炎，嗜酸性胰腺炎，沟型胰腺炎，血管瘤，胰腺内动脉瘤，结核，