“Epididymal appendices, also known as appendix of the epididymis or appendix epididymis, are an testicular appendage found at the head of the epididymis 1. They represent a developmental remnant of the mesonephric duct (Wolffian duct). In 78% of the cases, it has a stalk configuration and is thus subject to torsion”

39 M with US showing an appendix epididymis off the head of the left epididymis
Ashley Davidoff MD
133649
US in the transverse plane through the right epididymis in a 24 year old male shows a bilobed appendix epididymis on a narrow stalk, and an epididymal cyst. The normal distal aspect of the spermatic cord surrounding the epididymis sis seen and there is a small amount of fluid in the scrotal sac.
Ashley Davidoff MD 133514