Painless accumulation of fluid in a sac around one or both testicles between the layers of the tunica vaginalis.

Causes

  • Idiopathic (most common)
  • Congenital
  • Acquired: Secondary to underlying pathology
  • (e.g., trauma, tumor, torsion, infection)

Clinical features

  • Painless swelling of affected scrotum 
  • May be present since infancy or childhood
  • Positive transillumination

Diagnosis:

  • Usually a clinical diagnosis
  • Ultrasound: Anechoic fluid confirms the diagnosis.

Simple Hydrocele

A hydrocoele is demonstrated surrounding an otherwise normal testis .

Reactive Hydrocele due to epididymitis

COMPLEX HYDROCELE