A varicocele is an abnormal dilation of the pampiniform venous plexus within the spermatic cord, found in approximately 15% of all men, with prevalence increasing to 35% in men with primary infertility and up to 80% in men with secondary infertility. [1-2] Most varicoceles are left-sided (85–90%) due to the anatomy of the left testicular venous drainage into the left renal vein. [1][3] The following is a clinically organized summary for emergency medicine and primary care evaluation.
1. History
- Onset, duration, and character of scrotal symptoms (most are asymptomatic and found incidentally) [1]
- Dull ache or scrotal heaviness, often worse with prolonged standing or exertion, improved with recumbency [1][4]
- Fertility history: duration of attempting conception, prior pregnancies, partner's fertility status [5]
- Sexual history and prior STI screening (to differentiate from epididymitis)
- History of trauma to the scrotum
- Timing relative to puberty in adolescents (varicoceles become more common as puberty begins) [6]
- Ask about rapid onset of new right-sided or bilateral scrotal swelling (may suggest secondary cause) [1]
2. Alarm Features
- Isolated right-sided varicocele → must evaluate for retroperitoneal mass (e.g., renal cell carcinoma) compressing the IVC or right gonadal vein [1]
- New-onset varicocele in an older man (>40 years) → consider retroperitoneal or pelvic malignancy causing venous obstruction
- Varicocele that does not decompress in the supine position → suggests venous obstruction from a mass [5]
- Acute severe scrotal pain → rule out testicular torsion (surgical emergency, salvage rate ~90% within 6 hours) [1]
- Hard, non-tender testicular mass → concern for testicular cancer [1]
- Constitutional symptoms (weight loss, fever, night sweats) → malignancy workup
3. Medications
- No specific medications cause varicoceles
- Symptomatic management of pain: NSAIDs (ibuprofen 400–600 mg PO q6–8h) and scrotal support
- Acetaminophen as an alternative analgesic
- No role for empiric antibiotics unless epididymitis is suspected
- In the fertility context, antioxidant supplements (e.g., vitamin C, vitamin E, CoQ10) have been studied but lack definitive evidence for routine use
4. Diet
- No specific dietary triggers or restrictions for varicocele
- General recommendations for men with fertility concerns: balanced diet rich in antioxidants, adequate hydration
- Avoidance of excessive heat exposure to the scrotum (hot tubs, saunas, laptops on lap) may be relevant in the fertility context given the role of scrotal hyperthermia in varicocele pathophysiology [2]
5. Review of Systems
- GU: dysuria, hematuria, urethral discharge, testicular pain, erectile dysfunction
- Constitutional: fever, weight loss, fatigue (malignancy red flags)
- GI/Abdominal: flank pain, abdominal mass (retroperitoneal pathology)
- Musculoskeletal: groin or inguinal pain (hernia vs. referred pain)
- Reproductive: libido changes, prior semen analyses, hypogonadal symptoms (fatigue, decreased energy — larger varicoceles may impact testosterone production) [2][5]
6. Collateral History and Family History
- Family history of infertility or varicocele
- Family history of renal cell carcinoma or retroperitoneal malignancy (relevant if isolated right-sided or new-onset varicocele)
- Partner's reproductive history and gynecologic evaluation status
- Social context: occupations requiring prolonged standing may exacerbate symptoms
7. Risk Factors
- Age: typically presents during puberty (peak onset 15–25 years) [6-7]
- Tall stature (longer gonadal vein)
- Left-sided predominance due to the left gonadal vein draining into the left renal vein at a right angle [1][3]
- Incompetent or absent venous valves in the internal spermatic vein
- Possible genetic predisposition [8]
- No clear modifiable lifestyle risk factors
8. Differential Diagnosis
The following algorithm from the AAFP provides a systematic approach to evaluating scrotal masses:
- Hydrocele: painless, smooth, fluctuant, transilluminates; extratesticular [1]
- Spermatocele/epididymal cyst: painless cystic mass at the head of the epididymis; transilluminates
- Inguinal hernia: reducible mass, palpable impulse with Valsalva, extends into inguinal canal [4]
- Epididymitis: painful, gradual onset, tenderness over epididymis, positive Prehn sign, often infectious [1]
- Testicular torsion: acute severe pain, high-riding testis, absent cremasteric reflex — surgical emergency [1]
- Testicular cancer: firm, non-tender, unilateral intratesticular mass; does not transilluminate [1]
- Torsion of testicular appendage: gradual onset of superior pole pain, "blue dot" sign [1]
9. Past Medical History
- Prior scrotal surgery or varicocele repair (recurrence rate varies by technique)
- History of cryptorchidism (associated with both infertility and testicular cancer risk)
- Prior fertility evaluations or semen analyses
- Chronic conditions: renal disease, retroperitoneal surgery, or known malignancy
- History of DVT or venous insufficiency
10. Physical Exam
- Examine patient standing in a warm room; inspect and palpate both hemiscrotums [3][5]
- Classic finding: "bag of worms" palpable above and posterior to the testis [1][5]
- Perform Valsalva maneuver — varicocele should increase in size with Valsalva and decompress when supine [3][5]
- Grading (WHO): [3]
- Grade I: palpable only with Valsalva
- Grade II: palpable at rest in upright position
- Grade III: visible at rest in upright position
- Assess testicular size bilaterally — ipsilateral testicular atrophy suggests varicocele-related damage [5]
- Check cremasteric reflex (to rule out torsion) [1]
- Palpate inguinal canals for hernia
- Transilluminate to differentiate from hydrocele [1]
- Abdominal exam if concern for retroperitoneal mass
11. Lab Studies
- Routine labs are generally not needed for uncomplicated varicocele [1]
- If fertility concern:
- Semen analysis (at least two) — assess count, motility, morphology [5]
- FSH, LH, testosterone — to evaluate for hypogonadism; elevated FSH may indicate impaired spermatogenesis [5]
- Inhibin B — marker of Sertoli cell function (research setting)
- If testicular mass suspected: AFP, β-hCG, LDH (tumor markers) [1]
- If epididymitis suspected: urinalysis, urine culture, GC/chlamydia NAAT
- Sperm DNA fragmentation testing is emerging but not yet routine [8]
12. Imaging
- Scrotal ultrasound with color Doppler is the first-line imaging modality when physical exam is inconclusive [5][9-10]
- Diagnostic criteria: spermatic veins >2.5–3.0 mm in diameter with retrograde flow on Valsalva [5]
- Also assesses testicular volume discrepancy
- Imaging is not indicated for routine screening if the varicocele is clearly palpable [5][11]
- CT abdomen/pelvis: indicated for isolated right-sided varicocele or new-onset varicocele in older men to rule out retroperitoneal mass [1]
- Spermatic venography: reserved for recurrent or persistent varicocele post-repair [5]
- Shear wave elastography is an emerging modality under investigation [8]
13. Special Tests
- TWIST score (Testicular Workup for Ischemia and Suspected Torsion): useful when acute scrotal pain is the presenting complaint to risk-stratify for torsion [1]
- Orchidometer or ultrasound volumetry for serial testicular volume measurement in adolescents [12]
- Peak retrograde flow (PRF) on Doppler: PRF >38 cm/s may indicate higher risk of testicular dysfunction in adolescents [6]
14. ECG
15. Assessment
Varicocele is a common, usually benign condition that is most often asymptomatic and discovered incidentally or during infertility evaluation. [1] Key clinical considerations:
- Only clinically palpable varicoceles have been clearly associated with infertility [5][11]
- Subclinical varicoceles (detected only by imaging) have no demonstrated benefit from treatment [5][11]
- The mechanism of fertility impairment is multifactorial: scrotal hyperthermia, oxidative stress, testicular hypoxia, and blood-testis barrier disruption [2]
- Larger varicoceles may have a greater impact on semen parameters and testosterone production [2][5]
- Severity stratification should incorporate varicocele grade, testicular volume asymmetry, semen parameters, and hormonal profile
16. Treatment Plan
Conservative management (majority of patients):
- Scrotal support (supportive underwear)
- NSAIDs for symptomatic pain
- Observation with serial semen analyses every 1–2 years for young men with normal semen parameters [5]
Indications for varicocele repair (per AUA/ASRM guidelines): [5][11]
- Palpable varicocele + known infertility + abnormal semen parameters + female partner with normal or treatable fertility
- Palpable varicocele + pain refractory to conservative measures
- Adolescents with ipsilateral testicular volume loss (≥20% asymmetry) or abnormal semen analysis [5-6]
Surgical options: [5][11]
- Microsurgical subinguinal varicocelectomy — gold standard; lowest recurrence (~1%) and complication rates [5][8]
- Inguinal microsurgical approach — similar outcomes
- Laparoscopic varicocelectomy — higher recurrence than microsurgical
- Percutaneous embolization — minimally invasive alternative; comparable efficacy [5]
Repair is NOT indicated for: [5][11]
- Subclinical (non-palpable) varicoceles
- Normal semen quality
- Isolated teratozoospermia
Time to improvement in semen parameters post-repair: approximately 3–6 months. [5]
17. Disposition
- Outpatient management is appropriate for the vast majority of varicoceles [13]
- Urology referral indications:
- Infertility with palpable varicocele and abnormal semen parameters [5][11]
- Symptomatic varicocele refractory to conservative measures
- Adolescent with testicular volume asymmetry or abnormal semen analysis [5][12]
- Isolated right-sided varicocele (after retroperitoneal imaging) [1]
- Suspicion of testicular mass or malignancy [1]
- Emergency department disposition: varicocele itself is not an emergency; however, if acute scrotal pain is the presentation, torsion must be excluded before discharge [1]
18. Follow Up / Return Precautions
- Adolescents: annual follow-up with testicular volume measurement and/or semen analysis (Tanner V) until paternity is achieved [5][12]
- Adults with untreated varicocele and fertility concerns: semen analysis every 1–2 years [5]
- Post-repair: repeat semen analysis at 3–6 months; if no improvement by 6 months, further evaluation warranted [5]
- Return precautions (counsel patients to return for):
- Acute onset of severe scrotal pain (torsion concern)
- New hard testicular mass
- Worsening scrotal swelling or pain despite conservative measures
- Constitutional symptoms (weight loss, fever)
- Expected course: most varicoceles are stable and benign; surgical repair, when indicated, has a low complication rate and is associated with improvement in semen parameters in the majority of patients [5]
References
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