A spermatocele is best described as which of the following?

• A. Painless, fluid-filled mass above the testis that transilluminates
• B. Painful mass within the testis
• C. Epididymal abscess
• D. Torsion of the testis leading to acute pain

Answer: (A)

A spermatocele is a cystic dilation of the epididymal ducts, forming a fluid-filled sac that sits near the testis, typically above or behind it in the epididymal head. Because it contains fluid, it transilluminates when light passes through the scrotum. It is usually painless and separate from the testis itself, which helps distinguish it from true testicular pathology.

So the description that fits best is a painless, fluid-filled mass above the testis that transilluminates. This contrasts with a painful intratesticular mass (which would raise concern for torsion or tumor) and with an epididymal abscess (which would be tender with possible fever).