Ultrasound imaging of the appendix testis and appendix epididymis

The appendix testis and epididymis are well visualized on ultrasound examination. It is important to recognize the normal anatomy of the appendages to exclude them as a cause of pathology and confirm their presence as normal structures. We describe the appearances of the appendices testis and epididymis in fifty-one consecutive patients presenting to the Southampton Radiology Department. The appendix testis was identified on 80% of testes examined by ultrasound and the appendix epididymis on 6% of testes.