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Fat Necrosis, Oil Cyst
Wendie A. Berg, MD, PhD, FACR, FSBI
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KEY FACTS

  • Imaging

    • Top Differential Diagnoses

      • Pathology

        • Diagnostic Checklist

          TERMINOLOGY

          • Definitions

            • Result of injury to breast fat with chemical irritation, inflammation

          IMAGING

          • General Features

            • Mammographic Findings

              • Ultrasonographic Findings

                • MR Findings

                  • Nuclear Medicine Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Gross Pathologic & Surgical Features

                            • Microscopic Features

                              CLINICAL ISSUES

                              • Presentation

                                • Demographics

                                  • Natural History & Prognosis

                                    • Treatment

                                      DIAGNOSTIC CHECKLIST

                                      • Consider

                                        • Image Interpretation Pearls

                                          Selected References

                                          1. Hassan HHM et al: Fat necrosis of the breast: magnetic resonance imaging characteristics and pathologic correlation. Acad Radiol. 25(8):985-92, 2018
                                          2. Mahoney MC et al: Postoperative enhancement on breast MRI: time course and pattern of changes. Breast J. 24(5):783-8, 2018
                                          3. Tayyab SJ et al: A pictorial review: multimodality imaging of benign and suspicious features of fat necrosis in the breast. Br J Radiol. 20180213, 2018
                                          4. Myung Y et al: Relationship between obesity and surgical complications after reduction mammaplasty: A systematic literature review and meta-analysis. Aesthet Surg J. 37(3):308-315, 2017
                                          5. Kerridge WD et al: Fat Necrosis of the Breast: A Pictorial Review of the Mammographic, Ultrasound, CT, and MRI Findings with Histopathologic Correlation. Radiol Res Pract. 2015:613139, 2015
                                          6. Mineda K et al: Chronic inflammation and progressive calcification as a result of fat necrosis: the worst outcome in fat grafting. Plast Reconstr Surg. 133(5):1064-72, 2014
                                          7. Akkas BE et al: Fat necrosis may mimic local recurrence of breast cancer in FDG PET/CT. Rev Esp Med Nucl Imagen Mol. Epub ahead of print, 2012
                                          8. Wagner IJ et al: A classification system for fat necrosis in autologous breast reconstruction. Ann Plast Surg. 70(5):553-6, 2013
                                          9. Trimboli RM et al: MRI of fat necrosis of the breast: the "black hole" sign at short tau inversion recovery. Eur J Radiol. 81(4):e573-9, 2012
                                          10. Taboada JL et al: The many faces of fat necrosis in the breast. AJR Am J Roentgenol. 192(3):815-25, 2009
                                          11. Daly CP et al: Variable appearances of fat necrosis on breast MRI. AJR Am J Roentgenol. 191(5):1374-80, 2008
                                          12. Gatta G et al: Clinical, mammographic and ultrasonographic features of blunt breast trauma. Eur J Radiol. 59(3):327-30, 2006
                                          13. Tan PH et al: Fat necrosis of the breast--a review. Breast. 15(3):313-8, 2006
                                          14. Crystal P et al: Sonographic findings of palpable isoechoic breast fat necrosis: look for skin integrity. J Ultrasound Med. 24(1):105-7, 2005
                                          15. Kang BJ et al: Breast MRI findings after modified radical mastectomy and transverse rectus abdominis myocutaneous flap in patients with breast cancer. J Magn Reson Imaging. 21(6):784-91, 2005
                                          16. Chala LF et al: Fat necrosis of the breast: mammographic, sonographic, computed tomography, and magnetic resonance imaging findings. Curr Probl Diagn Radiol. 33(3):106-26, 2004
                                          17. Williams HJ et al: Imaging features of breast trauma: a pictorial review. Breast. 11(2):107-15, 2002
                                          18. Bilgen IG et al: Fat necrosis of the breast: clinical, mammographic and sonographic features. Eur J Radiol. 39(2):92-9, 2001
                                          19. Soo MS et al: Fat necrosis in the breast: sonographic features. Radiology. 206(1):261-9, 1998
                                          20. Gluck BS et al: Microcalcifications on postoperative mammograms as an indicator of adequacy of tumor excision. Radiology. 188(2):469-72, 1993
                                          21. Mendelson EB: Evaluation of the postoperative breast. Radiol Clin North Am. 30(1):107-38, 1992
                                          Related Anatomy
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                                          Related Differential Diagnoses
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                                          References
                                          Tables

                                          Tables

                                          KEY FACTS

                                          • Imaging

                                            • Top Differential Diagnoses

                                              • Pathology

                                                • Diagnostic Checklist

                                                  TERMINOLOGY

                                                  • Definitions

                                                    • Result of injury to breast fat with chemical irritation, inflammation

                                                  IMAGING

                                                  • General Features

                                                    • Mammographic Findings

                                                      • Ultrasonographic Findings

                                                        • MR Findings

                                                          • Nuclear Medicine Findings

                                                            • Imaging Recommendations

                                                              DIFFERENTIAL DIAGNOSIS

                                                                PATHOLOGY

                                                                • General Features

                                                                  • Gross Pathologic & Surgical Features

                                                                    • Microscopic Features

                                                                      CLINICAL ISSUES

                                                                      • Presentation

                                                                        • Demographics

                                                                          • Natural History & Prognosis

                                                                            • Treatment

                                                                              DIAGNOSTIC CHECKLIST

                                                                              • Consider

                                                                                • Image Interpretation Pearls

                                                                                  Selected References

                                                                                  1. Hassan HHM et al: Fat necrosis of the breast: magnetic resonance imaging characteristics and pathologic correlation. Acad Radiol. 25(8):985-92, 2018
                                                                                  2. Mahoney MC et al: Postoperative enhancement on breast MRI: time course and pattern of changes. Breast J. 24(5):783-8, 2018
                                                                                  3. Tayyab SJ et al: A pictorial review: multimodality imaging of benign and suspicious features of fat necrosis in the breast. Br J Radiol. 20180213, 2018
                                                                                  4. Myung Y et al: Relationship between obesity and surgical complications after reduction mammaplasty: A systematic literature review and meta-analysis. Aesthet Surg J. 37(3):308-315, 2017
                                                                                  5. Kerridge WD et al: Fat Necrosis of the Breast: A Pictorial Review of the Mammographic, Ultrasound, CT, and MRI Findings with Histopathologic Correlation. Radiol Res Pract. 2015:613139, 2015
                                                                                  6. Mineda K et al: Chronic inflammation and progressive calcification as a result of fat necrosis: the worst outcome in fat grafting. Plast Reconstr Surg. 133(5):1064-72, 2014
                                                                                  7. Akkas BE et al: Fat necrosis may mimic local recurrence of breast cancer in FDG PET/CT. Rev Esp Med Nucl Imagen Mol. Epub ahead of print, 2012
                                                                                  8. Wagner IJ et al: A classification system for fat necrosis in autologous breast reconstruction. Ann Plast Surg. 70(5):553-6, 2013
                                                                                  9. Trimboli RM et al: MRI of fat necrosis of the breast: the "black hole" sign at short tau inversion recovery. Eur J Radiol. 81(4):e573-9, 2012
                                                                                  10. Taboada JL et al: The many faces of fat necrosis in the breast. AJR Am J Roentgenol. 192(3):815-25, 2009
                                                                                  11. Daly CP et al: Variable appearances of fat necrosis on breast MRI. AJR Am J Roentgenol. 191(5):1374-80, 2008
                                                                                  12. Gatta G et al: Clinical, mammographic and ultrasonographic features of blunt breast trauma. Eur J Radiol. 59(3):327-30, 2006
                                                                                  13. Tan PH et al: Fat necrosis of the breast--a review. Breast. 15(3):313-8, 2006
                                                                                  14. Crystal P et al: Sonographic findings of palpable isoechoic breast fat necrosis: look for skin integrity. J Ultrasound Med. 24(1):105-7, 2005
                                                                                  15. Kang BJ et al: Breast MRI findings after modified radical mastectomy and transverse rectus abdominis myocutaneous flap in patients with breast cancer. J Magn Reson Imaging. 21(6):784-91, 2005
                                                                                  16. Chala LF et al: Fat necrosis of the breast: mammographic, sonographic, computed tomography, and magnetic resonance imaging findings. Curr Probl Diagn Radiol. 33(3):106-26, 2004
                                                                                  17. Williams HJ et al: Imaging features of breast trauma: a pictorial review. Breast. 11(2):107-15, 2002
                                                                                  18. Bilgen IG et al: Fat necrosis of the breast: clinical, mammographic and sonographic features. Eur J Radiol. 39(2):92-9, 2001
                                                                                  19. Soo MS et al: Fat necrosis in the breast: sonographic features. Radiology. 206(1):261-9, 1998
                                                                                  20. Gluck BS et al: Microcalcifications on postoperative mammograms as an indicator of adequacy of tumor excision. Radiology. 188(2):469-72, 1993
                                                                                  21. Mendelson EB: Evaluation of the postoperative breast. Radiol Clin North Am. 30(1):107-38, 1992