What is the most common scrotal mass?

What is the most common scrotal mass?

• A. Hydrocele
• B. Spermatocele
• C. Varicocele
• D. Epididymal cyst

Answer: (B)

A spermatocele is a cystic dilation of the epididymal ducts, typically located at the head of the epididymis. It forms a discrete, usually painless mass that often transilluminates and is separate from the testis. This combination of origin, behavior, and appearance makes it the most common cystic scrotal mass you’ll encounter. On ultrasound, expect a well-defined, anechoic or hypoechoic cyst in the epididymal region with no solid components and without testicular involvement. This helps distinguish it from a hydrocele, which surrounds the testis as a fluid collection; from a varicocele, which is a dilated venous network with a “bag of worms” appearance that changes with Valsalva; and from other epididymal cysts, of which the spermatocele is the classic and most common type.

A spermatocele is a cystic dilation of the epididymal ducts, typically located at the head of the epididymis. It forms a discrete, usually painless mass that often transilluminates and is separate from the testis. This combination of origin, behavior, and appearance makes it the most common cystic scrotal mass you’ll encounter. On ultrasound, expect a well-defined, anechoic or hypoechoic cyst in the epididymal region with no solid components and without testicular involvement. This helps distinguish it from a hydrocele, which surrounds the testis as a fluid collection; from a varicocele, which is a dilated venous network with a “bag of worms” appearance that changes with Valsalva; and from other epididymal cysts, of which the spermatocele is the classic and most common type.