Cystic appendix epididymis: a sonomorphologic study
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We aimed to describe the morphologic characteristics of the appendix epididymis that appears cystic on ultrasound (US) examinations. Two hundred and seventy-two patients (544 testes) were examined by US for various scrotal complaints. The patients were prospectively evaluated for the presence of testicular appendages. Cystic appendix epididymis on US examinations was classified according to the presence of the stalk and size of the cyst. Testicular appendages have been identified in 337 out of 544 testes (61.9%). Of them, 241 were appendix testis (44.3%) and 96 (17.6%) were appendix epididymis. Of the appendix epididymises, 35 were cystic in nature (36.4%). The most common morphology in our study was the stalked appendix epididymis with nonseptated unilocular cysts (31.4%). In conclusion, cystic appearance of the appendix epididymis on sonographic examinations is frequent and it should not be mistaken with a torsed testicular appendage.
KeywordsTesticular appendages Appendix epididymis Cyst Anatomy Ultrasonography
- 2.Bostwick DG (1997) Spermatic cord and testicular adnexa. In: Bostwick DG, Eble JN (eds) Urologic surgical pathology. Mosby-Year Book Inc., St Louis, MO, pp 647–673Google Scholar
- 5.Gondos B, Wong TW (1997) Nonneoplastic diseases of the testis and epididymis. In: Murphy WM (ed) Urological pathology. WB Saunder Company, 2nd edn. Philadelphia, PA, pp 277–341Google Scholar
- 11.Sellars MEK, Sidhu PS(2003) Ultrasound appearances of the testicular appendages: pictorial review. Eur Radiol 13:127–135Google Scholar
- 14.Trainer TD(1992) Testis and excretory duct system. In: Sternberg SS (ed) Histology for pathologists. Raven Press, New York, NY, pp 731–747Google Scholar