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Hepatic *Echinococcus* Cyst
Hee Sun Park, MD, PhD; Aya Kamaya, MD, FSRU, FSAR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Synonyms

                • Echinococcal or hydatid disease; echinococcosis
              • Definitions

                • Infection of humans caused by larval stage of Echinococcus granulosus or Echinococcus multilocularis

              IMAGING

              • General Features

                • Ultrasonographic Findings

                  • Radiographic Findings

                    • CT Findings

                      • MR Findings

                        • Imaging Recommendations

                          DIFFERENTIAL DIAGNOSIS

                            PATHOLOGY

                            • General Features

                              • Microscopic Features

                                CLINICAL ISSUES

                                • Presentation

                                  • Demographics

                                    • Natural History & Prognosis

                                      • Treatment

                                        DIAGNOSTIC CHECKLIST

                                        • Consider

                                          • Image Interpretation Pearls

                                            Selected References

                                            1. Qian LJ et al: Spectrum of multilocular cystic hepatic lesions: CT and MR imaging findings with pathologic correlation. Radiographics. 33(5):1419-33, 2013
                                            2. Taheri MS et al: Not-to-tap cystic lesions: spectrum of hydatid disease. Emerg Radiol. 20(6):553-61, 2013
                                            3. Li Q et al: Echinococcal cysts of the liver and spleen: complex hepatic and splenic cystic lesions. Ultrasound Q. 28(3):205-7, 2012
                                            4. Marrone G et al: Multidisciplinary imaging of liver hydatidosis. World J Gastroenterol. 18(13):1438-47, 2012
                                            5. Mousavi SR et al: A retrospective survey of human hydatidosis based on hospital records during the period of 10 years. J Parasit Dis. 36(1):7-9, 2012
                                            6. Cubas-Castillo R et al: Hydatid liver disease: our 25-year experience. Cir Cir. 79(4):306-312, 2011
                                            7. Brunetti E et al: Expert consensus for the diagnosis and treatment of cystic and alveolar echinococcosis in humans. Acta Trop. 114(1):1-16, 2010
                                            8. Agayev RM et al: Hepatic hydatid disease: surgical experience over 15 years. Hepatogastroenterology. 55(85):1373-9, 2008
                                            9. Benedetti NJ et al: Imaging of hepatic infections. Ultrasound Q. 24(4):267-78, 2008
                                            10. Turgut AT et al: Sonographic spectrum of hydatid disease. Ultrasound Q. 24(1):17-29, 2008
                                            11. Ilica AT et al: Extrahepatic abdominal hydatid disease caused by Echinococcus granulosus: imaging findings. AJR Am J Roentgenol. 189(2):337-43, 2007
                                            12. Turgut AT et al: Unusual imaging characteristics of complicated hydatid disease. Eur J Radiol. 63(1):84-93, 2007
                                            13. Mortelé KJ et al: The infected liver: radiologic-pathologic correlation. Radiographics. 24(4):937-55, 2004
                                            14. Polat P et al: Hydatid disease from head to toe. Radiographics. 23(2):475-94; quiz 536-7, 2003
                                            15. Haddad MC et al: Unilocular hepatic echinococcal cysts: sonography and computed tomography findings. Clin Radiol. 56(9):746-50, 2001
                                            16. Pedrosa I et al: Hydatid disease: radiologic and pathologic features and complications. Radiographics. 20(3):795-817, 2000
                                            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

                                                      • Diagnostic Checklist

                                                        TERMINOLOGY

                                                        • Synonyms

                                                          • Echinococcal or hydatid disease; echinococcosis
                                                        • Definitions

                                                          • Infection of humans caused by larval stage of Echinococcus granulosus or Echinococcus multilocularis

                                                        IMAGING

                                                        • General Features

                                                          • Ultrasonographic Findings

                                                            • Radiographic Findings

                                                              • CT Findings

                                                                • MR Findings

                                                                  • Imaging Recommendations

                                                                    DIFFERENTIAL DIAGNOSIS

                                                                      PATHOLOGY

                                                                      • General Features

                                                                        • Microscopic Features

                                                                          CLINICAL ISSUES

                                                                          • Presentation

                                                                            • Demographics

                                                                              • Natural History & Prognosis

                                                                                • Treatment

                                                                                  DIAGNOSTIC CHECKLIST

                                                                                  • Consider

                                                                                    • Image Interpretation Pearls

                                                                                      Selected References

                                                                                      1. Qian LJ et al: Spectrum of multilocular cystic hepatic lesions: CT and MR imaging findings with pathologic correlation. Radiographics. 33(5):1419-33, 2013
                                                                                      2. Taheri MS et al: Not-to-tap cystic lesions: spectrum of hydatid disease. Emerg Radiol. 20(6):553-61, 2013
                                                                                      3. Li Q et al: Echinococcal cysts of the liver and spleen: complex hepatic and splenic cystic lesions. Ultrasound Q. 28(3):205-7, 2012
                                                                                      4. Marrone G et al: Multidisciplinary imaging of liver hydatidosis. World J Gastroenterol. 18(13):1438-47, 2012
                                                                                      5. Mousavi SR et al: A retrospective survey of human hydatidosis based on hospital records during the period of 10 years. J Parasit Dis. 36(1):7-9, 2012
                                                                                      6. Cubas-Castillo R et al: Hydatid liver disease: our 25-year experience. Cir Cir. 79(4):306-312, 2011
                                                                                      7. Brunetti E et al: Expert consensus for the diagnosis and treatment of cystic and alveolar echinococcosis in humans. Acta Trop. 114(1):1-16, 2010
                                                                                      8. Agayev RM et al: Hepatic hydatid disease: surgical experience over 15 years. Hepatogastroenterology. 55(85):1373-9, 2008
                                                                                      9. Benedetti NJ et al: Imaging of hepatic infections. Ultrasound Q. 24(4):267-78, 2008
                                                                                      10. Turgut AT et al: Sonographic spectrum of hydatid disease. Ultrasound Q. 24(1):17-29, 2008
                                                                                      11. Ilica AT et al: Extrahepatic abdominal hydatid disease caused by Echinococcus granulosus: imaging findings. AJR Am J Roentgenol. 189(2):337-43, 2007
                                                                                      12. Turgut AT et al: Unusual imaging characteristics of complicated hydatid disease. Eur J Radiol. 63(1):84-93, 2007
                                                                                      13. Mortelé KJ et al: The infected liver: radiologic-pathologic correlation. Radiographics. 24(4):937-55, 2004
                                                                                      14. Polat P et al: Hydatid disease from head to toe. Radiographics. 23(2):475-94; quiz 536-7, 2003
                                                                                      15. Haddad MC et al: Unilocular hepatic echinococcal cysts: sonography and computed tomography findings. Clin Radiol. 56(9):746-50, 2001
                                                                                      16. Pedrosa I et al: Hydatid disease: radiologic and pathologic features and complications. Radiographics. 20(3):795-817, 2000