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Asymmetric Fatty Lobulation of Pancreas
Siva P. Raman, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Synonyms

              • Focal lipomatosis or focal fatty infiltration of pancreas
            • Definitions

              • Focal accumulation of fat within anterior aspect of head of pancreas, normal variant that is not infrequently confused for hypodense mass

            IMAGING

            • General Features

              • CT Findings

                • MR Findings

                  • Ultrasonographic Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Staging, Grading, & Classification

                            • Gross Pathologic & Surgical Features

                              • Microscopic Features

                                CLINICAL ISSUES

                                • Presentation

                                  • Natural History & Prognosis

                                    DIAGNOSTIC CHECKLIST

                                    • Consider

                                      • Image Interpretation Pearls

                                        Selected References

                                        1. Harrington KA et al: MRI of the pancreas. J Magn Reson Imaging. 53(2):347-59, 2020
                                        2. Shaaban AM et al: Fat-containing retroperitoneal lesions: imaging characteristics, localization, and differential diagnosis. Radiographics. 36(3):710-34, 2016
                                        3. Pokharel SS et al: Current MR imaging lipid detection techniques for diagnosis of lesions in the abdomen and pelvis. Radiographics. 33(3):681-702, 2013
                                        4. Low G et al: Multimodality imaging of neoplastic and nonneoplastic solid lesions of the pancreas. Radiographics. 31(4):993-1015, 2011
                                        5. Brar R et al: Focal fatty infiltration of the pancreatic head: "leave me alone lesion". Postgrad Med J. 86(1021):680-1, 2010
                                        6. Yang DM et al: Sonographic appearance of focal fatty infiltration of the pancreas. J Clin Ultrasound. 38(1):45-7, 2010
                                        7. Kawamoto S et al: Focal fatty infiltration in the head of the pancreas: evaluation with multidetector computed tomography with multiplanar reformation imaging. J Comput Assist Tomogr. 33(1):90-5, 2009
                                        Related Anatomy
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                                        Related Differential Diagnoses
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                                        References
                                        Tables

                                        Tables

                                        KEY FACTS

                                        • Terminology

                                          • Imaging

                                            • Top Differential Diagnoses

                                              • Pathology

                                                • Clinical Issues

                                                  TERMINOLOGY

                                                  • Synonyms

                                                    • Focal lipomatosis or focal fatty infiltration of pancreas
                                                  • Definitions

                                                    • Focal accumulation of fat within anterior aspect of head of pancreas, normal variant that is not infrequently confused for hypodense mass

                                                  IMAGING

                                                  • General Features

                                                    • CT Findings

                                                      • MR Findings

                                                        • Ultrasonographic Findings

                                                          • Imaging Recommendations

                                                            DIFFERENTIAL DIAGNOSIS

                                                              PATHOLOGY

                                                              • General Features

                                                                • Staging, Grading, & Classification

                                                                  • Gross Pathologic & Surgical Features

                                                                    • Microscopic Features

                                                                      CLINICAL ISSUES

                                                                      • Presentation

                                                                        • Natural History & Prognosis

                                                                          DIAGNOSTIC CHECKLIST

                                                                          • Consider

                                                                            • Image Interpretation Pearls

                                                                              Selected References

                                                                              1. Harrington KA et al: MRI of the pancreas. J Magn Reson Imaging. 53(2):347-59, 2020
                                                                              2. Shaaban AM et al: Fat-containing retroperitoneal lesions: imaging characteristics, localization, and differential diagnosis. Radiographics. 36(3):710-34, 2016
                                                                              3. Pokharel SS et al: Current MR imaging lipid detection techniques for diagnosis of lesions in the abdomen and pelvis. Radiographics. 33(3):681-702, 2013
                                                                              4. Low G et al: Multimodality imaging of neoplastic and nonneoplastic solid lesions of the pancreas. Radiographics. 31(4):993-1015, 2011
                                                                              5. Brar R et al: Focal fatty infiltration of the pancreatic head: "leave me alone lesion". Postgrad Med J. 86(1021):680-1, 2010
                                                                              6. Yang DM et al: Sonographic appearance of focal fatty infiltration of the pancreas. J Clin Ultrasound. 38(1):45-7, 2010
                                                                              7. Kawamoto S et al: Focal fatty infiltration in the head of the pancreas: evaluation with multidetector computed tomography with multiplanar reformation imaging. J Comput Assist Tomogr. 33(1):90-5, 2009