<unk> s are less common than spermatoceles and are indistinguishable from the latter at US.<unk> s contain clear serous fluid and may arise throughout the epididymis (spermatoceles almost always arise in the epididymal head).
An increased incidence of<unk> s has been reported in boys who are exposed in utero to diethylstilbestrol.
Although epididymal head<unk> s cannot be differentiated from spermatoceles, they usually are not clinically relevant.
Patient #1
Patient #2: Ultrasound images demonstrate a large<unk> 
Large<unk> 
Large<unk> 
Large<unk> 
Large<unk> 
Large<unk> 
Large<unk>
Epididymal cyst
Epididymal head cyst
Testicular cyst
Spermatocele
Scrotal cyst
Spermatic cord cyst
Pineal gland cyst
Hydrocele testis