Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 2/1/2026

Evidence‑Based Assessment and Management of Adult Hydroceles and Testicular Cysts

Initial Clinical Assessment

  • A comprehensive scrotal examination should be performed to evaluate for testicular masses, tenderness, size asymmetry, and transillumination characteristics of hydroceles. 1

Diagnostic Imaging

  • Scrotal ultrasound is required to definitively exclude underlying testicular malignancy, because hydroceles can mask tumors, especially in men with risk factors. 2
  • In men ≥ 60 years, the differential diagnosis must prioritize exclusion of testicular cancer, as germ‑cell tumors may present with secondary hydroceles. 2
  • Adult hydroceles warrant routine ultrasound evaluation to rule out secondary causes, most importantly malignancy. 2

Characteristics of Small Testicular Cysts

  • Testicular cysts measuring approximately 6 mm are typically benign; intervention is unnecessary unless the cyst enlarges or becomes symptomatic. 2
  • When ultrasound shows a simple cyst without solid components or internal vascularity, no biopsy or surgical exploration is indicated. 2
  • Observation alone is the recommended management strategy for asymptomatic small testicular cysts. 2

Follow‑Up Strategy

  • Clinical or imaging follow‑up should be scheduled only if the patient develops symptoms (pain, heaviness, functional impairment) or if ultrasound reveals concerning features that warrant surveillance. 2