epididymal cyst
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/1/8/8/2/0/e834c73d4f4360ab0af7f208dc1eaf_big_gallery_thumb.jpg)
Epididymal
cyst • Epididymal cyst - Ganzer Fall bei Radiopaedia
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/1/8/8/2/2/e3dd4ee6c652d55db33188233073aa_big_gallery_thumb.jpg)
Epididymal
cyst • Epididymal cyst - Ganzer Fall bei Radiopaedia
![](https://pacs.de/sites/default/files/pictures/thumbs/data.pacs.de/1/1/8/8/2/3/47314e825f4857957f4ce24b1bb233_big_gallery_thumb.jpg)
Epididymal
cyst • Epididymal head cyst - Ganzer Fall bei Radiopaedia
Epididymal cysts are the most common epididymal mass.
Epidemiology
Epididymal cysts have been reported in ~30% (range 20-40%) of asymptomatic individuals .
Pathology
They are usually of lymphatic origin . The cysts contain clear serous fluid, lymphocytes, spermatozoa and debris.
Clinical presentation
Often manifests as a palpable mass. Approximately one-third of patients can be asymptomatic. It may be more prevalent in mountain bikers .
Radiographic features
They can be solitary or multiple with ~30% having more than one cyst .
Ultrasound
- cyst contents in uncomplicated cases are anechoic with no internal echoes
- posterior acoustic enhancement may be seen
- well-defined anechoic lesions
- larger cysts may contain septations
- larger cysts may displace the testis
- this is a differentiating point from hydrocele which envelops the testis
Differential diagnosis
Imaging differential considerations include:
- spermatocele
- usually has some internal echotexture, but may be indistinguishable from an epididymal cyst
- epididymal cysts may arise throughout the epididymis, while spermatoceles almost always arise in the epididymal head
- tunica vaginalis cyst
- paratesticular abscess
- will tend to show surrounding inflammatory changes
- clinical context is different
- small hydrocele to be differentiated from large epididymal cyst with septations
See also
Siehe auch:
und weiter:
![Click für weniger anzeigen](/sites/all/modules/pacs/tools/imgs/collapse_up.png)
![](/sites/all/modules/pacs/tools/imgs/Iris_color_40.png)