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Epididymitis
Bryan R. Foster, MD; Mitchell Tublin, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Clinical Issues

          TERMINOLOGY

          • Synonyms

            • Orchitis, epididymoorchitis
          • Definitions

            • Infection or inflammation of epididymis &/or testis

          IMAGING

          • General Features

            • Ultrasonographic 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. Dasu N et al: Amiodarone induced epididymo-orchitis. Urol Case Rep. 26:100929, 2019
                                  2. Nepal P et al: "The great nasquerader": sonographic pictorial review of testicular tuberculosis and its mimics. J Clin Imaging Sci. 9:27, 2019
                                  3. Quach HT et al: Severe epididymo-orchitis and encephalitis complicating anti-PD-1 therapy. Oncologist. 24(7):872-6, 2019
                                  4. Rebik K et al: Scrotal ultrasound. Radiol Clin North Am. 57(3):635-48, 2019
                                  5. Bertolotto M et al: Multiparametric US for scrotal diseases. Abdom Radiol (NY). 43(4):899-917, 2018
                                  6. Hamidi M et al: Lesions without borders: scrotal lesions that involve both the intratesticular and extratesticular regions. AJR Am J Roentgenol. 210(2):W70-9, 2018
                                  7. El Hamrouni I et al: Unusual case of testicular tuberculosis. J Belg Soc Radiol. 101(1):17, 2017
                                  8. Fonseca EKUN et al: Inferno sign in epididymo-orchitis. Abdom Radiol (NY). 42(12):2955-6, 2017
                                  9. Bertolotto M et al: Pitfalls in imaging for acute scrotal pathology. Semin Roentgenol. 51(1):60-9, 2016
                                  10. Bertolotto M et al: Grayscale and color Doppler features of testicular lymphoma. J Ultrasound Med. 34(6):1139-45, 2015
                                  11. Avery LL et al: Imaging of penile and scrotal emergencies. Radiographics. 33(3):721-40, 2013
                                  12. Boettcher M et al: Differentiation of epididymitis and appendix testis torsion by clinical and ultrasound signs in children. Urology. 82(4):899-904, 2013
                                  13. D'Andrea A et al: US in the assessment of acute scrotum. Crit Ultrasound J. 5 Suppl 1:S8, 2013
                                  14. Yusuf G et al: Global testicular infarction in the presence of epididymitis: clinical features, appearances on grayscale, color Doppler, and contrast-enhanced sonography, and histologic correlation. J Ultrasound Med. 32(1):175-80, 2013
                                  15. Aganovic L et al: Imaging of the scrotum. Radiol Clin North Am. 50(6):1145-65, 2012
                                  16. Yagil Y et al: Role of Doppler ultrasonography in the triage of acute scrotum in the emergency department. J Ultrasound Med. 29(1):11-21, 2010
                                  17. Thinyu S et al: Role of ultrasonography in diagnosis of scrotal disorders: a review of 110 cases. Biomed Imaging Interv J. 5(1):e2, 2009
                                  18. Tracy CR et al: Diagnosis and management of epididymitis. Urol Clin North Am. 35(1):101-8; vii, 2008
                                  19. Aso C et al: Gray-scale and color Doppler sonography of scrotal disorders in children: an update. Radiographics. 25(5):1197-214, 2005
                                  20. Dogra V et al: Acute painful scrotum. Radiol Clin North Am. 42(2):349-63, 2004
                                  21. Chung JJ et al: Sonographic findings in tuberculous epididymitis and epididymo-orchitis. J Clin Ultrasound. 25(7):390-4, 1997
                                  22. Gordon LM et al: Traumatic epididymitis: evaluation with color Doppler sonography. AJR Am J Roentgenol. 166(6):1323-5, 1996
                                  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

                                          • Synonyms

                                            • Orchitis, epididymoorchitis
                                          • Definitions

                                            • Infection or inflammation of epididymis &/or testis

                                          IMAGING

                                          • General Features

                                            • Ultrasonographic 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. Dasu N et al: Amiodarone induced epididymo-orchitis. Urol Case Rep. 26:100929, 2019
                                                                  2. Nepal P et al: "The great nasquerader": sonographic pictorial review of testicular tuberculosis and its mimics. J Clin Imaging Sci. 9:27, 2019
                                                                  3. Quach HT et al: Severe epididymo-orchitis and encephalitis complicating anti-PD-1 therapy. Oncologist. 24(7):872-6, 2019
                                                                  4. Rebik K et al: Scrotal ultrasound. Radiol Clin North Am. 57(3):635-48, 2019
                                                                  5. Bertolotto M et al: Multiparametric US for scrotal diseases. Abdom Radiol (NY). 43(4):899-917, 2018
                                                                  6. Hamidi M et al: Lesions without borders: scrotal lesions that involve both the intratesticular and extratesticular regions. AJR Am J Roentgenol. 210(2):W70-9, 2018
                                                                  7. El Hamrouni I et al: Unusual case of testicular tuberculosis. J Belg Soc Radiol. 101(1):17, 2017
                                                                  8. Fonseca EKUN et al: Inferno sign in epididymo-orchitis. Abdom Radiol (NY). 42(12):2955-6, 2017
                                                                  9. Bertolotto M et al: Pitfalls in imaging for acute scrotal pathology. Semin Roentgenol. 51(1):60-9, 2016
                                                                  10. Bertolotto M et al: Grayscale and color Doppler features of testicular lymphoma. J Ultrasound Med. 34(6):1139-45, 2015
                                                                  11. Avery LL et al: Imaging of penile and scrotal emergencies. Radiographics. 33(3):721-40, 2013
                                                                  12. Boettcher M et al: Differentiation of epididymitis and appendix testis torsion by clinical and ultrasound signs in children. Urology. 82(4):899-904, 2013
                                                                  13. D'Andrea A et al: US in the assessment of acute scrotum. Crit Ultrasound J. 5 Suppl 1:S8, 2013
                                                                  14. Yusuf G et al: Global testicular infarction in the presence of epididymitis: clinical features, appearances on grayscale, color Doppler, and contrast-enhanced sonography, and histologic correlation. J Ultrasound Med. 32(1):175-80, 2013
                                                                  15. Aganovic L et al: Imaging of the scrotum. Radiol Clin North Am. 50(6):1145-65, 2012
                                                                  16. Yagil Y et al: Role of Doppler ultrasonography in the triage of acute scrotum in the emergency department. J Ultrasound Med. 29(1):11-21, 2010
                                                                  17. Thinyu S et al: Role of ultrasonography in diagnosis of scrotal disorders: a review of 110 cases. Biomed Imaging Interv J. 5(1):e2, 2009
                                                                  18. Tracy CR et al: Diagnosis and management of epididymitis. Urol Clin North Am. 35(1):101-8; vii, 2008
                                                                  19. Aso C et al: Gray-scale and color Doppler sonography of scrotal disorders in children: an update. Radiographics. 25(5):1197-214, 2005
                                                                  20. Dogra V et al: Acute painful scrotum. Radiol Clin North Am. 42(2):349-63, 2004
                                                                  21. Chung JJ et al: Sonographic findings in tuberculous epididymitis and epididymo-orchitis. J Clin Ultrasound. 25(7):390-4, 1997
                                                                  22. Gordon LM et al: Traumatic epididymitis: evaluation with color Doppler sonography. AJR Am J Roentgenol. 166(6):1323-5, 1996