Clinical Findings of Varicocele
Varicocele is diagnosed primarily by physical examination revealing abnormal dilatation of the pampiniform venous plexus, typically presenting as a palpable scrotal mass that feels like a "bag of worms" at the upper pole of the testis, predominantly on the left side. 1
Physical Examination Findings
Primary Clinical Features
- Palpable venous dilatation: The hallmark finding is dilated veins in the spermatic cord, classically described as having a "bag of worms" consistency 2
- Location: Predominantly left-sided (due to anatomical differences in venous drainage), though can be bilateral or rarely isolated right-sided 2
- Position-dependent: Varicoceles typically become more prominent when standing and may decrease or disappear when supine
- Upper pole location: The dilated veins are found at the upper pole of the testis 2
Grading System
Varicoceles are clinically graded based on physical examination:
- Grade I: Palpable only with Valsalva maneuver
- Grade II: Palpable without Valsalva
- Grade III: Visible through scrotal skin 3
The distinction between clinical (palpable) and subclinical (non-palpable, detected only by imaging) varicocele is critical, as subclinical varicoceles should not be treated 1
Associated Clinical Findings
In Adolescents
- Testicular asymmetry: Persistent size difference >2 mL or 20% between testes, confirmed on two visits 6 months apart 1
- Testicular hypotrophy: Growth arrest of the affected testis 4, 2, 5
- Usually asymptomatic: Most commonly discovered during routine physical examination 2, 5
- Scrotal mass sensation: When symptomatic, patients may report awareness of scrotal fullness 3
In Adults
- Pain: Dull, aching scrotal discomfort that worsens with prolonged standing 3, 6
- Scrotal mass: Palpable fullness or swelling 3
- Infertility: Often the presenting complaint in adult males 3
- Abnormal semen parameters: Associated finding rather than physical exam finding, but clinically relevant 1
Key Diagnostic Considerations
When Physical Examination is Sufficient
Physical examination alone is adequate for diagnosis when a palpable varicocele is detected 7. The guidelines explicitly discourage routine ultrasound investigation for presumed varicocele when not palpable, as treatment of non-palpable varicoceles does not improve outcomes 7.
When Imaging May Be Indicated
- Confirmation before repair: Scrotal ultrasound with Doppler can confirm presence and assess success after correction in the context of shared decision-making 7
- Uncertain physical findings: When examination is equivocal
- Assessment of testicular volume: Particularly in adolescents to document asymmetry 4
Critical Pitfall to Avoid
Do not treat subclinical (non-palpable) varicoceles detected only by imaging 1. This is a strong recommendation from the 2025 EAU guidelines, as treatment of subclinical varicoceles is not associated with improvement in semen parameters or fertility rates 7.
Clinical Context by Age Group
Adolescents (Key Findings)
- Prevalence: Affects up to 15% of postpubertal boys 4, 5
- Most commonly asymptomatic and found on routine examination 2, 5
- Primary concern: Testicular growth and development 4
- Clinically significant finding: Persistent testicular volume asymmetry >2 mL or 20% difference 1
Adults (Key Findings)
- Pain is more common presenting symptom than in adolescents 3
- Infertility evaluation often prompts discovery 3
- Associated with abnormal semen parameters in infertile men 1
- Clinically significant finding: Palpable varicocele with abnormal semen parameters and unexplained infertility 1
Summary of Clinically Actionable Findings
The physical examination should specifically assess for:
- Palpable venous dilatation in the spermatic cord (with and without Valsalva)
- Laterality (left, right, or bilateral)
- Grade (I, II, or III)
- Testicular size and consistency (comparing both sides)
- Position-dependent changes (standing vs. supine)
In adolescents, serial testicular volume measurements are essential to identify the subset at risk for impaired spermatogenesis, with intervention indicated for persistent asymmetry >2 mL or 20% confirmed over 6 months 1, 4.