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Spermatocele/Epididymal Cyst
Alice Fung, MD; Katherine E. Maturen, MD, MS
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Definitions

                • Spermatocele: Retention cyst of rete testis or epididymis containing spermatozoa
                • Epididymal cyst: Collection of simple fluid

              IMAGING

              • General Features

                • CT Findings

                  • MR Findings

                    • Imaging Recommendations

                      • Ultrasonographic Findings

                        DIFFERENTIAL DIAGNOSIS

                          PATHOLOGY

                          • General Features

                            • Gross Pathologic & Surgical Features

                              CLINICAL ISSUES

                              • Presentation

                                • Demographics

                                  • Treatment

                                    DIAGNOSTIC CHECKLIST

                                    • Consider

                                      • Image Interpretation Pearls

                                        Selected References

                                        1. Sharbidre KG et al: Imaging of scrotal masses. Abdom Radiol (NY). 45(7):2087-108, 2020
                                        2. Rebik K et al: Scrotal ultrasound. Radiol Clin North Am. 57(3):635-48, 2019
                                        3. Nicola R et al: Review of paratesticular pathology: findings on ultrasound and MRI. Abdom Radiol (NY). 42(2):585-601, 2017
                                        4. Yang JR et al: Comparison between open epididymal cystectomy and minimal resection of epididymal cysts using a scrotoscope: a clinical trial for the evaluation of a new surgical technique. Urology. 85(6):1510-4, 2015
                                        5. Sommers D et al: Ultrasonography evaluation of scrotal masses. Radiol Clin North Am. 52(6):1265-81, 2014
                                        6. Erikci V et al: Management of epididymal cysts in childhood. J Pediatr Surg. 48(10):2153-6, 2013
                                        7. Rioja J et al: Adult hydrocele and spermatocele. BJU Int. 107(11):1852-64, 2011
                                        8. Valentino M et al: Cystic lesions and scrotal fluid collections in adults: ultrasound findings. J Ultrasound. 14(4):208-15, 2011
                                        9. Posey ZQ et al: Rate and associations of epididymal cysts on pediatric scrotal ultrasound. J Urol. 184(4 Suppl):1739-42, 2010
                                        10. Sista AK et al: Color Doppler sonography in evaluation of spermatoceles: the "falling snow" sign. J Ultrasound Med. 27(1):141-3, 2008
                                        11. Smart JM et al: Ultrasound findings of masses of the paratesticular space. Clin Radiol. 63(8):929-38, 2008
                                        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

                                                    • Definitions

                                                      • Spermatocele: Retention cyst of rete testis or epididymis containing spermatozoa
                                                      • Epididymal cyst: Collection of simple fluid

                                                    IMAGING

                                                    • General Features

                                                      • CT Findings

                                                        • MR Findings

                                                          • Imaging Recommendations

                                                            • Ultrasonographic Findings

                                                              DIFFERENTIAL DIAGNOSIS

                                                                PATHOLOGY

                                                                • General Features

                                                                  • Gross Pathologic & Surgical Features

                                                                    CLINICAL ISSUES

                                                                    • Presentation

                                                                      • Demographics

                                                                        • Treatment

                                                                          DIAGNOSTIC CHECKLIST

                                                                          • Consider

                                                                            • Image Interpretation Pearls

                                                                              Selected References

                                                                              1. Sharbidre KG et al: Imaging of scrotal masses. Abdom Radiol (NY). 45(7):2087-108, 2020
                                                                              2. Rebik K et al: Scrotal ultrasound. Radiol Clin North Am. 57(3):635-48, 2019
                                                                              3. Nicola R et al: Review of paratesticular pathology: findings on ultrasound and MRI. Abdom Radiol (NY). 42(2):585-601, 2017
                                                                              4. Yang JR et al: Comparison between open epididymal cystectomy and minimal resection of epididymal cysts using a scrotoscope: a clinical trial for the evaluation of a new surgical technique. Urology. 85(6):1510-4, 2015
                                                                              5. Sommers D et al: Ultrasonography evaluation of scrotal masses. Radiol Clin North Am. 52(6):1265-81, 2014
                                                                              6. Erikci V et al: Management of epididymal cysts in childhood. J Pediatr Surg. 48(10):2153-6, 2013
                                                                              7. Rioja J et al: Adult hydrocele and spermatocele. BJU Int. 107(11):1852-64, 2011
                                                                              8. Valentino M et al: Cystic lesions and scrotal fluid collections in adults: ultrasound findings. J Ultrasound. 14(4):208-15, 2011
                                                                              9. Posey ZQ et al: Rate and associations of epididymal cysts on pediatric scrotal ultrasound. J Urol. 184(4 Suppl):1739-42, 2010
                                                                              10. Sista AK et al: Color Doppler sonography in evaluation of spermatoceles: the "falling snow" sign. J Ultrasound Med. 27(1):141-3, 2008
                                                                              11. Smart JM et al: Ultrasound findings of masses of the paratesticular space. Clin Radiol. 63(8):929-38, 2008