An epididymal cyst is the most common of epididymal masses.
They are usually of lymphatic origin 2. Cysts contain clear serous fluid.
Often manifests as a palpable mass. ~ 1/3 rd of patients can be asymptomatic. It may be more prevalent in mountain bikers 3.
They can be solitary or multiple.
- cyst contents in uncomplicated cases are anechoic with no internal echoes.
- posterior acoustic enhancement may be seen.
- spermatocoele : usually has some internal echotexture, but may be indistinguishable from an epididymal cyst
- tunica vaginalis cyst
- paratesticular abscess : will tend to show surrounding inflammatory changes ; the clinical context is different.
- 1. Black JA, Patel A. Sonography of the abnormal extratesticular space. AJR Am J Roentgenol. 1996;167 (2): 507-11. AJR Am J Roentgenol (citation) - Pubmed citation
- 2. Aso C, Enríquez G, Fité M et-al. Gray-scale and color Doppler sonography of scrotal disorders in children: an update. Radiographics. 25 (5): 1197-214. doi:10.1148/rg.255045109 - Pubmed citation
- 3. Frauscher F, Klauser A, Stenzl A et-al. US findings in the scrotum of extreme mountain bikers. Radiology. 2001;219 (2): 427-31. Radiology (full text) - Pubmed citation
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Epididymal head cyst||✗|