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Genitourinary
Diagnosis
Kidney and Renal Pelvis
Renal Cystic Disease
Renal Cyst
Renal Cyst
Alessandro Furlan, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          • Diagnostic Checklist

            TERMINOLOGY

            • Definitions

              • Benign, fluid-filled, nonneoplastic renal lesion

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • Radiographic Findings

                  • CT Findings

                    • MR Findings

                      • Angiographic Findings

                        • Imaging Recommendations

                          DIFFERENTIAL DIAGNOSIS

                            PATHOLOGY

                            • General Features

                              • Gross Pathologic & Surgical Features

                                CLINICAL ISSUES

                                • Presentation

                                  • Demographics

                                    • Natural History & Prognosis

                                      • Treatment

                                        DIAGNOSTIC CHECKLIST

                                        • Image Interpretation Pearls

                                          Selected References

                                          1. Heilbrun ME et al: ACR Appropriateness Criteria Indeterminate Renal Mass. J Am Coll Radiol. 12(4):333-41, 2015
                                          2. Wood CG 3rd et al: CT and MR Imaging for Evaluation of Cystic Renal Lesions and Diseases. Radiographics. 35(1):125-41, 2015
                                          3. Hindman NM et al: Follow-up for Bosniak category 2F cystic renal lesions. Radiology. 272(3):757-66, 2014
                                          4. Simms RJ et al: How simple are 'simple renal cysts'? Nephrol Dial Transplant. 29 Suppl 4:iv106-12, 2014
                                          5. O'Connor SD et al: Simple cyst-appearing renal masses at unenhanced CT: can they be presumed to be benign? Radiology. 269(3):793-800, 2013
                                          6. Bosniak MA: The Bosniak renal cyst classification: 25 years later. Radiology. 262(3):781-5, 2012
                                          7. Rule AD et al: Characteristics of renal cystic and solid lesions based on contrast-enhanced computed tomography of potential kidney donors. Am J Kidney Dis. 59(5):611-8, 2012
                                          8. Smith AD et al: Bosniak category IIF and III cystic renal lesions: outcomes and associations. Radiology. 262(1):152-60, 2012
                                          9. Berland LL et al: Managing incidental findings on abdominal CT: white paper of the ACR incidental findings committee. J Am Coll Radiol. 7(10):754-73, 2010
                                          10. Israel GM et al: Pitfalls in renal mass evaluation and how to avoid them. Radiographics. 28(5):1325-38, 2008
                                          11. Terada N et al: The 10-year natural history of simple renal cysts. Urology. 71(1):7-11; discussion 11-2, 2008
                                          12. Wang ZJ et al: Renal cyst pseudoenhancement at multidetector CT: what are the effects of number of detectors and peak tube voltage?. Radiology. 248(3):910-6, 2008
                                          13. Jonisch AI et al: Can high-attenuation renal cysts be differentiated from renal cell carcinoma at unenhanced CT?. Radiology. 243(2):445-50, 2007
                                          14. Silverman SG et al: Hyperattenuating renal masses: etiologies, pathogenesis, and imaging evaluation. Radiographics. 27(4):1131-43, 2007
                                          15. Israel GM et al: An update of the Bosniak renal cyst classification system. Urology. 66(3):484-8, 2005
                                          16. Hartman DS et al: From the RSNA refresher courses: a practical approach to the cystic renal mass. Radiographics. 24 Suppl 1:S101-15, 2004
                                          17. Israel GM et al: Evaluation of cystic renal masses: comparison of CT and MR imaging by using the Bosniak classification system. Radiology. 231(2):365-71, 2004
                                          18. Israel GM et al: Calcification in cystic renal masses: is it important in diagnosis? Radiology. 226(1):47-52, 2003
                                          19. Israel GM et al: Follow-up CT of moderately complex cystic lesions of the kidney (Bosniak category IIF). AJR Am J Roentgenol. 181(3):627-33, 2003
                                          20. Bae KT et al: Renal cysts: is attenuation artifactually increased on contrast-enhanced CT images? Radiology. 216(3):792-6, 2000
                                          21. Curry NS et al: Cystic renal masses: accurate Bosniak classification requires adequate renal CT. AJR Am J Roentgenol. 175(2):339-42, 2000
                                          22. Balci NC et al: Complex renal cysts: findings on MR imaging. AJR Am J Roentgenol. 172(6):1495-500, 1999
                                          23. Bosniak MA: Diagnosis and management of patients with complicated cystic lesions of the kidney. AJR Am J Roentgenol. 169(3):819-21, 1997
                                          24. Davidson AJ et al: Radiologic assessment of renal masses: implications for patient care. Radiology. 202(2):297-305, 1997
                                          25. Siegel CL et al: CT of cystic renal masses: analysis of diagnostic performance and interobserver variation. AJR Am J Roentgenol. 169(3):813-8, 1997
                                          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

                                                  • Diagnostic Checklist

                                                    TERMINOLOGY

                                                    • Definitions

                                                      • Benign, fluid-filled, nonneoplastic renal lesion

                                                    IMAGING

                                                    • General Features

                                                      • Ultrasonographic Findings

                                                        • Radiographic Findings

                                                          • CT Findings

                                                            • MR Findings

                                                              • Angiographic Findings

                                                                • Imaging Recommendations

                                                                  DIFFERENTIAL DIAGNOSIS

                                                                    PATHOLOGY

                                                                    • General Features

                                                                      • Gross Pathologic & Surgical Features

                                                                        CLINICAL ISSUES

                                                                        • Presentation

                                                                          • Demographics

                                                                            • Natural History & Prognosis

                                                                              • Treatment

                                                                                DIAGNOSTIC CHECKLIST

                                                                                • Image Interpretation Pearls

                                                                                  Selected References

                                                                                  1. Heilbrun ME et al: ACR Appropriateness Criteria Indeterminate Renal Mass. J Am Coll Radiol. 12(4):333-41, 2015
                                                                                  2. Wood CG 3rd et al: CT and MR Imaging for Evaluation of Cystic Renal Lesions and Diseases. Radiographics. 35(1):125-41, 2015
                                                                                  3. Hindman NM et al: Follow-up for Bosniak category 2F cystic renal lesions. Radiology. 272(3):757-66, 2014
                                                                                  4. Simms RJ et al: How simple are 'simple renal cysts'? Nephrol Dial Transplant. 29 Suppl 4:iv106-12, 2014
                                                                                  5. O'Connor SD et al: Simple cyst-appearing renal masses at unenhanced CT: can they be presumed to be benign? Radiology. 269(3):793-800, 2013
                                                                                  6. Bosniak MA: The Bosniak renal cyst classification: 25 years later. Radiology. 262(3):781-5, 2012
                                                                                  7. Rule AD et al: Characteristics of renal cystic and solid lesions based on contrast-enhanced computed tomography of potential kidney donors. Am J Kidney Dis. 59(5):611-8, 2012
                                                                                  8. Smith AD et al: Bosniak category IIF and III cystic renal lesions: outcomes and associations. Radiology. 262(1):152-60, 2012
                                                                                  9. Berland LL et al: Managing incidental findings on abdominal CT: white paper of the ACR incidental findings committee. J Am Coll Radiol. 7(10):754-73, 2010
                                                                                  10. Israel GM et al: Pitfalls in renal mass evaluation and how to avoid them. Radiographics. 28(5):1325-38, 2008
                                                                                  11. Terada N et al: The 10-year natural history of simple renal cysts. Urology. 71(1):7-11; discussion 11-2, 2008
                                                                                  12. Wang ZJ et al: Renal cyst pseudoenhancement at multidetector CT: what are the effects of number of detectors and peak tube voltage?. Radiology. 248(3):910-6, 2008
                                                                                  13. Jonisch AI et al: Can high-attenuation renal cysts be differentiated from renal cell carcinoma at unenhanced CT?. Radiology. 243(2):445-50, 2007
                                                                                  14. Silverman SG et al: Hyperattenuating renal masses: etiologies, pathogenesis, and imaging evaluation. Radiographics. 27(4):1131-43, 2007
                                                                                  15. Israel GM et al: An update of the Bosniak renal cyst classification system. Urology. 66(3):484-8, 2005
                                                                                  16. Hartman DS et al: From the RSNA refresher courses: a practical approach to the cystic renal mass. Radiographics. 24 Suppl 1:S101-15, 2004
                                                                                  17. Israel GM et al: Evaluation of cystic renal masses: comparison of CT and MR imaging by using the Bosniak classification system. Radiology. 231(2):365-71, 2004
                                                                                  18. Israel GM et al: Calcification in cystic renal masses: is it important in diagnosis? Radiology. 226(1):47-52, 2003
                                                                                  19. Israel GM et al: Follow-up CT of moderately complex cystic lesions of the kidney (Bosniak category IIF). AJR Am J Roentgenol. 181(3):627-33, 2003
                                                                                  20. Bae KT et al: Renal cysts: is attenuation artifactually increased on contrast-enhanced CT images? Radiology. 216(3):792-6, 2000
                                                                                  21. Curry NS et al: Cystic renal masses: accurate Bosniak classification requires adequate renal CT. AJR Am J Roentgenol. 175(2):339-42, 2000
                                                                                  22. Balci NC et al: Complex renal cysts: findings on MR imaging. AJR Am J Roentgenol. 172(6):1495-500, 1999
                                                                                  23. Bosniak MA: Diagnosis and management of patients with complicated cystic lesions of the kidney. AJR Am J Roentgenol. 169(3):819-21, 1997
                                                                                  24. Davidson AJ et al: Radiologic assessment of renal masses: implications for patient care. Radiology. 202(2):297-305, 1997
                                                                                  25. Siegel CL et al: CT of cystic renal masses: analysis of diagnostic performance and interobserver variation. AJR Am J Roentgenol. 169(3):813-8, 1997
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