In a 46-year-old man with left scrotal pain, a 0.6 cm left epididymal cyst on ultrasound, leg pain radiating down the leg, and two weeks of anejaculation, what is the appropriate workup and treatment?

Workup and Treatment for Left Testicular Pain with Epididymal Cyst and Anejaculation

This patient requires evaluation for chronic scrotal content pain (CSCP) with consideration of neuropathic pain given the radiating leg symptoms, and the anejaculation warrants specific investigation for ejaculatory duct obstruction or neurologic dysfunction. 1

Initial Diagnostic Approach

The 0.6 cm epididymal cyst is likely incidental and not the primary pain source, especially given the radiating leg pain and new-onset anejaculation. The constellation of symptoms suggests a broader neurologic or pelvic floor issue rather than isolated cystic pathology 1.

Key Workup Elements:

Focused History:

• Duration and character of pain (sharp, burning, aching)
• Specific radiation pattern down the leg (suggests ilioinguinal or genitofemoral nerve involvement)
• Timing of anejaculation onset relative to pain
• Previous groin surgery, trauma, or vasectomy
• Bladder symptoms or other pelvic pain sites
• Sexual function beyond ejaculation (erectile function, orgasm sensation)

Physical Examination:

• Palpate spermatic cord for tenderness or thickening
• Assess for inguinal hernia
• Evaluate for trigger points in lower abdomen and groin
• Neurologic examination of lower extremity
• Testicular and epididymal examination for masses or tenderness

Additional Testing:

• Post-ejaculatory urinalysis (if patient can achieve orgasm without ejaculation, check for retrograde ejaculation)
• Consider MRI pelvis if concern for pelvic pathology causing nerve compression
• Semen analysis if ejaculation can be achieved

Diagnostic Nerve Blocks

The radiating leg pain strongly suggests neuropathic involvement, making diagnostic nerve blocks both diagnostic and potentially therapeutic 1. Given the unilateral nature and leg radiation:

• Spermatic cord block (SCB): Can alleviate pain from genital nerve fiber neuropathy. A >50% pain reduction predicts 78% success with surgical denervation if needed 1
• Ilioinguinal nerve block: Particularly indicated given the leg radiation pattern 1

These blocks serve dual purposes: confirming neuropathic etiology and providing prognostic information for potential surgical interventions.

Treatment Algorithm

First-Line Conservative Management

Multimodal non-surgical approach should be initiated 1, 2:

1. Pharmacologic pain management:

   • NSAIDs as first-line analgesic 2
   • Gabapentinoids (gabapentin or pregabalin) for neuropathic component - may provide significant pain reduction 2
   • Low-dose tricyclic antidepressants (nortriptyline 10-25 mg nightly, titrate up) - can offer up to 50% pain reduction 2

2. Lifestyle modifications:

   • Supportive undergarments
   • Warm baths or hot/cold packs 2
   • Stress reduction techniques

3. Single trial of antibiotics (if antibiotic-naïve):

   • Fluoroquinolone or sulfamethoxazole-trimethoprim for 10 days to rule out subclinical epididymo-orchitis 2
   • Only 22% of CSCP cases have infectious etiology, so avoid repeated courses 2

4. Pelvic floor physical therapy - particularly relevant given the complex pain pattern

Addressing the Anejaculation

The anejaculation is the most concerning new symptom and requires specific attention:

• If nerve blocks provide relief, this suggests the anejaculation may be neurologically mediated
• Consider alpha-blocker trial if concern for bladder neck dysfunction
• Urology referral for specialized evaluation if conservative measures fail
• Rule out retrograde ejaculation with post-orgasmic urinalysis

Second-Line Interventions (if conservative management fails after 8-12 weeks)

For persistent neuropathic pain:

• Transcutaneous electrical nerve stimulation (TENS) 2
• Acupuncture 2
• Microsurgical denervation of spermatic cord (MDSC) - particularly if positive response to SCB 1, 2

The Epididymal Cyst

The 0.6 cm cyst does NOT require intervention 3. Key considerations:

• Cysts <0.8 cm rarely cause symptoms 3
• Surgery is recommended only for symptomatic cysts >5 cm 4, 5
• If the cyst were truly symptomatic, aspiration with sclerotherapy (using 3% Polidocanol or alcohol) has 84% success rate with minimal complications 4, 5
• Microscopic cyst resection should be reserved for cysts approaching 0.8-0.9 cm to prevent epididymal tubule destruction 3

Critical Pitfalls to Avoid

1. Don't attribute all symptoms to the small epididymal cyst - the radiating leg pain and anejaculation indicate a more complex process
2. Don't pursue surgical cyst removal - at 0.6 cm, this is almost certainly incidental
3. Don't prescribe prolonged or repeated antibiotic courses - one 10-day trial maximum 2
4. Don't delay nerve blocks - they provide both diagnostic and therapeutic value 1
5. Reassess treatment efficacy regularly - discontinue ineffective treatments 1

When to Refer to Urology

• Failure of conservative management after 3 months
• Positive response to nerve blocks (for consideration of denervation)
• Persistent anejaculation requiring specialized evaluation
• Patient preference for interventional options after shared decision-making

Document treatment response at regular intervals and engage in shared decision-making throughout, ensuring the patient understands this is likely a chronic pain condition requiring multimodal management rather than a simple surgical fix 1.