Epididymal appendix

Last revised by Craig Hacking ◉ ◈ on 2 Sep 2020

Citation, DOI, disclosures and article data

Citation:

Rafailidis V, Hacking C, Gilcrease-Garcia B, et al. Epididymal appendix. Reference article, Radiopaedia.org (Accessed on 01 Oct 2023) https://doi.org/10.53347/rID-26487

DOI:

https://doi.org/10.53347/rID-26487

Permalink:

https://radiopaedia.org/articles/26487

rID:

26487

Article created:

23 Dec 2013, Vasileios Rafailidis

Disclosures:

At the time the article was created Vasileios Rafailidis had no recorded disclosures.

View Vasileios Rafailidis's current disclosures

Last revised:

2 Sep 2020, Craig Hacking ◉ ◈

Disclosures:

At the time the article was last revised Craig Hacking had no recorded disclosures.

View Craig Hacking's current disclosures

Revisions:

17 times, by 10 contributors - see full revision history and disclosures

Systems:

Urogenital

Sections:

Anatomy

Tags:

urogenital imaging, scrotum, epididymis, cases

Synonyms:

Appendix epididymis
Appendix of the epididymis

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 prone to torsion ².

The appendix epididymis, similarly to the appendix testis, is normally oval and pedunculated, although may be sessile in shape ¹. They appear iso- or hyperechoic to the epididymal parenchyma. Sometimes, calcifications may be found. In general, the epididymis appendix is best seen when floating in a hydrocele.