Epididymal appendix

Case contributed by Dr Chris Cadman


A middle aged man was referred to the radiology department by his GP following complaints of chronic intermittent left testicular discomfort. His only past medical history was of a left inguinal hernia.

Patient Data

Age: 35 years
Gender: Male

There is a short pedunculated mass arising from the head of the left epididymis.

Annotated image

Annotated image of findings.

Case Discussion

Although no cause was seen for the patient's testicular pain, an incidental finding of a left epididymal appendix was seen.

The appendix testis and appendix epididymis are vestigial remnants of the Mullerian and Wolffian ducts, respectively. They are common incidental findings with the appendix testis reported to be present in 90% of men and the appendix epididymis in 25% of men. Both can undergo torsion, resulting in acute scrotal pain.

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Case information

rID: 53904
Published: 19th Jun 2017
Last edited: 14th Aug 2019
System: Urogenital
Inclusion in quiz mode: Included

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