A scrotal mass is a lump or bulge that can be felt in the scrotum, the sac that contains the testicles.

See also:

• Orchitis
• Seminoma
• Sertoli-Leydig cell tumor
• Testicular cancer

A scrotal mass can be benign (generally harmless) or malignant (cancerous). Benign scrotal masses include:

• Varicocele -- a varicose vein along the spermatic cord
• Hydrocele -- fluid collection in the scrotum
• Hematocele -- blood collection within the scrotum
• Spermatocele -- a cyst-like mass within the scrotum that contains fluid and dead sperm cells

Scrotal masses can be caused by inflammatory or infectious diseases (for example, epididymitis), physical injury to the scrotum, herniation (inguinal hernia), or tumors.

• Painless or painful bulge or lump within the scrotum (testicle lump)
• Infertility
• Enlarged scrotum

During a physical examination, the doctor may feel a mass within the scrotum and make note of its features:

• Tender or non-tender
• Uniform, smooth, twisted, or irregular
• Fluctuant (feels liquid), firm, or solid
• Typically only on one side

The inguinal lymph nodes in the groin may or may not be enlarged or tender on the affected side.

The following tests may be performed to help diagnose a scrotal mass:

• Ultrasound of the scrotum
• Biopsy on masses that are surgically removed

To discover any lumps as early as possible, all men should perform testicular self-examination each month.