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Renal Angiomyolipoma
Matthew T. Heller, MD, FSAR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          TERMINOLOGY

          • Abbreviations

            • AML
          • Synonyms

            • Renal hamartoma or choristoma
          • Definitions

            • Benign renal neoplasm composed of abnormal blood vessels, smooth muscle, and adipose components

          IMAGING

          • General Features

            • Radiographic Findings

              • CT Findings

                • MR Findings

                  • Ultrasonographic Findings

                    • Angiographic 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. Kang SK et al: Solid renal masses: what the numbers tell us. AJR Am J Roentgenol. 202(6):1196-206, 2014
                                            2. Maclean DF et al: Is the follow-up of small renal angiomyolipomas a necessary precaution? Clin Radiol. 69(8):822-6, 2014
                                            3. Froemming AT et al: Renal epithelioid angiomyolipoma: imaging characteristics in nine cases with radiologic-pathologic correlation and review of the literature. AJR Am J Roentgenol. 200(2):W178-86, 2013
                                            4. Karlo CA et al: MR imaging of renal cortical tumours: qualitative and quantitative chemical shift imaging parameters. Eur Radiol. 23(6):1738-44, 2013
                                            5. Yarmish G et al: Case 199: Aggressive angiomyolipoma with renal vein thrombosis and pulmonary fat embolus. Radiology. 269(2):615-8, 2013
                                            6. Chaudhry HS et al: Histogram analysis of small solid renal masses: differentiating minimal fat angiomyolipoma from renal cell carcinoma. AJR Am J Roentgenol. 198(2):377-83, 2012
                                            7. Hindman N et al: Angiomyolipoma with minimal fat: can it be differentiated from clear cell renal cell carcinoma by using standard MR techniques? Radiology. 265(2):468-77, 2012
                                            8. Halpenny D et al: The radiological diagnosis and treatment of renal angiomyolipoma-current status. Clin Radiol. 65(2):99-108, 2010
                                            9. Aydin H et al: Renal angiomyolipoma: clinicopathologic study of 194 cases with emphasis on the epithelioid histology and tuberous sclerosis association. Am J Surg Pathol. 33(2):289-97, 2009
                                            10. Simpfendorfer C et al: Angiomyolipoma with minimal fat on MDCT: can counts of negative-attenuation pixels aid diagnosis?. AJR Am J Roentgenol. 192(2):438-43, 2009
                                            11. Israel GM et al: The use of opposed-phase chemical shift MRI in the diagnosis of renal angiomyolipomas. AJR Am J Roentgenol. 184(6):1868-72, 2005
                                            12. Kim JK et al: Angiomyolipoma with minimal fat: differentiation from renal cell carcinoma at biphasic helical CT. Radiology. 230(3):677-84, 2004
                                            13. Israel GM et al: CT differentiation of large exophytic renal angiomyolipomas and perirenal liposarcomas. AJR Am J Roentgenol. 179(3):769-73, 2002
                                            14. Yamakado K et al. Renal Angiomyolipoma: Relationships Between Tumor Size, Aneurysm formation and Rupture. Radiology 2002; 225:78-82
                                            Related Anatomy
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                                            Related Differential Diagnoses
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                                            References
                                            Tables

                                            Tables

                                            KEY FACTS

                                            • Terminology

                                              • Imaging

                                                • Top Differential Diagnoses

                                                  • Clinical Issues

                                                    TERMINOLOGY

                                                    • Abbreviations

                                                      • AML
                                                    • Synonyms

                                                      • Renal hamartoma or choristoma
                                                    • Definitions

                                                      • Benign renal neoplasm composed of abnormal blood vessels, smooth muscle, and adipose components

                                                    IMAGING

                                                    • General Features

                                                      • Radiographic Findings

                                                        • CT Findings

                                                          • MR Findings

                                                            • Ultrasonographic Findings

                                                              • Angiographic 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. Kang SK et al: Solid renal masses: what the numbers tell us. AJR Am J Roentgenol. 202(6):1196-206, 2014
                                                                                      2. Maclean DF et al: Is the follow-up of small renal angiomyolipomas a necessary precaution? Clin Radiol. 69(8):822-6, 2014
                                                                                      3. Froemming AT et al: Renal epithelioid angiomyolipoma: imaging characteristics in nine cases with radiologic-pathologic correlation and review of the literature. AJR Am J Roentgenol. 200(2):W178-86, 2013
                                                                                      4. Karlo CA et al: MR imaging of renal cortical tumours: qualitative and quantitative chemical shift imaging parameters. Eur Radiol. 23(6):1738-44, 2013
                                                                                      5. Yarmish G et al: Case 199: Aggressive angiomyolipoma with renal vein thrombosis and pulmonary fat embolus. Radiology. 269(2):615-8, 2013
                                                                                      6. Chaudhry HS et al: Histogram analysis of small solid renal masses: differentiating minimal fat angiomyolipoma from renal cell carcinoma. AJR Am J Roentgenol. 198(2):377-83, 2012
                                                                                      7. Hindman N et al: Angiomyolipoma with minimal fat: can it be differentiated from clear cell renal cell carcinoma by using standard MR techniques? Radiology. 265(2):468-77, 2012
                                                                                      8. Halpenny D et al: The radiological diagnosis and treatment of renal angiomyolipoma-current status. Clin Radiol. 65(2):99-108, 2010
                                                                                      9. Aydin H et al: Renal angiomyolipoma: clinicopathologic study of 194 cases with emphasis on the epithelioid histology and tuberous sclerosis association. Am J Surg Pathol. 33(2):289-97, 2009
                                                                                      10. Simpfendorfer C et al: Angiomyolipoma with minimal fat on MDCT: can counts of negative-attenuation pixels aid diagnosis?. AJR Am J Roentgenol. 192(2):438-43, 2009
                                                                                      11. Israel GM et al: The use of opposed-phase chemical shift MRI in the diagnosis of renal angiomyolipomas. AJR Am J Roentgenol. 184(6):1868-72, 2005
                                                                                      12. Kim JK et al: Angiomyolipoma with minimal fat: differentiation from renal cell carcinoma at biphasic helical CT. Radiology. 230(3):677-84, 2004
                                                                                      13. Israel GM et al: CT differentiation of large exophytic renal angiomyolipomas and perirenal liposarcomas. AJR Am J Roentgenol. 179(3):769-73, 2002
                                                                                      14. Yamakado K et al. Renal Angiomyolipoma: Relationships Between Tumor Size, Aneurysm formation and Rupture. Radiology 2002; 225:78-82