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Genitourinary
Diagnosis
Testes
Neoplasms
Epidermoid Cyst
Epidermoid Cyst
Kyle K. Jensen, MD; Mitchell Tublin, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Synonyms

              • Monodermal dermoid, keratin cyst of testis

            • Definitions

              • Rare benign, tumor-like, keratin-containing lesion

            IMAGING

            • General Features

              • Ultrasonographic 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. Liu R et al: Imaging in testicular epidermoid cysts. Clin Imaging. 50:211-5, 2018
                                      2. Paffenholz P et al: Testis sparing surgery for benign testicular masses: Diagnostics and therapeutic approaches. J Urol. 200(2):353-60, 2018
                                      3. Idrees MT et al: The World Health Organization 2016 classification of testicular non-germ cell tumours: a review and update from the International Society of Urological Pathology Testis Consultation Panel. Histopathology. 70(4):513-21, 2017
                                      4. Chen ST et al: Epidermoid cyst of the testis: An atypical sonographic appearance. J Clin Ultrasound. 44(7):448-51, 2016
                                      5. Rocher L et al: Incidentally detected non-palpable testicular tumours in adults at scrotal ultrasound: impact of radiological findings on management Radiologic review and recommendations of the ESUR scrotal imaging subcommittee. Eur Radiol. 26(7):2268-78, 2016
                                      6. Coursey Moreno C et al: Testicular tumors: what radiologists need to know--differential diagnosis, staging, and management. Radiographics. 35(2):400-15, 2015
                                      7. Sağlam HS et al: A unique scrotal extratesticular epidermod cyst attached to the seminal vesicles. Can Urol Assoc J. 7(3-4):E244-7, 2013
                                      8. Patel K et al: Features of testicular epidermoid cysts on contrast-enhanced sonography and real-time tissue elastography. J Ultrasound Med. 31(1):115-22, 2012
                                      9. Yuan WH et al: Differences in sonographic features of ruptured and unruptured epidermal cysts. J Ultrasound Med. 31(2):265-72, 2012
                                      10. Agarwal A et al: Intrascrotal extratesticular epidermoid cyst. Br J Radiol. 84(1002):e121-2, 2011
                                      11. Arellano CM et al: Testicular epidermoid cysts in children: sonographic characteristics with pathological correlation. Pediatr Radiol. 41(6):683-9; quiz 796-7, 2011
                                      12. Bhatt S et al: Imaging of non-neoplastic intratesticular masses. Diagn Interv Radiol. 2011 Mar;17(1):52-63. Epub 2010 Jun 30. Review. Erratum in: Diagn Interv Radiol. 17(4):388, 2011
                                      13. Loberant N et al: Bilateral testicular epidermoid cysts. J Clin Imaging Sci. 1:4, 2011
                                      14. Park SB et al: Imaging features of benign solid testicular and paratesticular lesions. Eur Radiol. 21(10):2226-34, 2011
                                      15. Manning MA et al: Testicular epidermoid cysts: sonographic features with clinicopathologic correlation. J Ultrasound Med. 29(5):831-7, 2010
                                      16. Mak CW et al: Epidermoid cyst of the testis. Australas Radiol. 51 Spec No, 2007
                                      17. Maizlin ZV et al: Epidermoid cyst and teratoma of the testis: sonographic and histologic similarities. J Ultrasound Med. 24(10):1403-9; quiz 1410-1, 2005
                                      18. Loya AG et al: Epidermoid cyst of the testis: radiologic-pathologic correlation. Radiographics. 24 Suppl 1:S243-6, 2004
                                      19. Langer JE et al: Epidermoid cysts of the testicle: sonographic and MR imaging features. AJR Am J Roentgenol. 173(5):1295-9, 1999
                                      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

                                                TERMINOLOGY

                                                • Synonyms

                                                  • Monodermal dermoid, keratin cyst of testis

                                                • Definitions

                                                  • Rare benign, tumor-like, keratin-containing lesion

                                                IMAGING

                                                • General Features

                                                  • Ultrasonographic 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. Liu R et al: Imaging in testicular epidermoid cysts. Clin Imaging. 50:211-5, 2018
                                                                          2. Paffenholz P et al: Testis sparing surgery for benign testicular masses: Diagnostics and therapeutic approaches. J Urol. 200(2):353-60, 2018
                                                                          3. Idrees MT et al: The World Health Organization 2016 classification of testicular non-germ cell tumours: a review and update from the International Society of Urological Pathology Testis Consultation Panel. Histopathology. 70(4):513-21, 2017
                                                                          4. Chen ST et al: Epidermoid cyst of the testis: An atypical sonographic appearance. J Clin Ultrasound. 44(7):448-51, 2016
                                                                          5. Rocher L et al: Incidentally detected non-palpable testicular tumours in adults at scrotal ultrasound: impact of radiological findings on management Radiologic review and recommendations of the ESUR scrotal imaging subcommittee. Eur Radiol. 26(7):2268-78, 2016
                                                                          6. Coursey Moreno C et al: Testicular tumors: what radiologists need to know--differential diagnosis, staging, and management. Radiographics. 35(2):400-15, 2015
                                                                          7. Sağlam HS et al: A unique scrotal extratesticular epidermod cyst attached to the seminal vesicles. Can Urol Assoc J. 7(3-4):E244-7, 2013
                                                                          8. Patel K et al: Features of testicular epidermoid cysts on contrast-enhanced sonography and real-time tissue elastography. J Ultrasound Med. 31(1):115-22, 2012
                                                                          9. Yuan WH et al: Differences in sonographic features of ruptured and unruptured epidermal cysts. J Ultrasound Med. 31(2):265-72, 2012
                                                                          10. Agarwal A et al: Intrascrotal extratesticular epidermoid cyst. Br J Radiol. 84(1002):e121-2, 2011
                                                                          11. Arellano CM et al: Testicular epidermoid cysts in children: sonographic characteristics with pathological correlation. Pediatr Radiol. 41(6):683-9; quiz 796-7, 2011
                                                                          12. Bhatt S et al: Imaging of non-neoplastic intratesticular masses. Diagn Interv Radiol. 2011 Mar;17(1):52-63. Epub 2010 Jun 30. Review. Erratum in: Diagn Interv Radiol. 17(4):388, 2011
                                                                          13. Loberant N et al: Bilateral testicular epidermoid cysts. J Clin Imaging Sci. 1:4, 2011
                                                                          14. Park SB et al: Imaging features of benign solid testicular and paratesticular lesions. Eur Radiol. 21(10):2226-34, 2011
                                                                          15. Manning MA et al: Testicular epidermoid cysts: sonographic features with clinicopathologic correlation. J Ultrasound Med. 29(5):831-7, 2010
                                                                          16. Mak CW et al: Epidermoid cyst of the testis. Australas Radiol. 51 Spec No, 2007
                                                                          17. Maizlin ZV et al: Epidermoid cyst and teratoma of the testis: sonographic and histologic similarities. J Ultrasound Med. 24(10):1403-9; quiz 1410-1, 2005
                                                                          18. Loya AG et al: Epidermoid cyst of the testis: radiologic-pathologic correlation. Radiographics. 24 Suppl 1:S243-6, 2004
                                                                          19. Langer JE et al: Epidermoid cysts of the testicle: sonographic and MR imaging features. AJR Am J Roentgenol. 173(5):1295-9, 1999