Scrotal Abscess Management

Introduction

• Scrotal abscess management involves a combination of surgical and antibiotic therapies, with the primary treatment being immediate surgical incision and drainage, followed by appropriate antibiotic therapy if systemic signs of infection are present or in immunocompromised patients, as recommended by the American College of Surgeons 1

Treatment Approach

• The primary treatment for a scrotal abscess is immediate surgical incision and drainage, followed by appropriate antibiotic therapy if systemic signs of infection are present or in immunocompromised patients, as recommended by the American College of Surgeons 1
• For large abscesses, use multiple counter incisions rather than a single long incision to prevent step-off deformity and delayed wound healing, with a strength of evidence level II 1
• Simple, localized abscess with adequate drainage may not require antibiotics if drainage is complete and patient is immunocompetent, as suggested by the Infectious Diseases Society of America (IDSA) 1

Antibiotic Therapy

• Empiric broad-spectrum antibiotics covering Gram-positive, Gram-negative, and anaerobic bacteria should be used for complex abscess or with systemic signs of infection, with a recommended regimen of Piperacillin-tazobactam 4.5g IV every 6-8 hours, or Ceftriaxone 1-2g IV daily plus Metronidazole 500mg IV every 6 hours, as recommended by the IDSA 1, 2
• If sexually transmitted infection is suspected, treatment with Ceftriaxone 250mg IM single dose PLUS Doxycycline 100mg orally twice daily for 10 days should be considered, with a strength of evidence level I 2

Special Considerations

• In cases of suspected Fournier's gangrene, more aggressive surgical debridement and broader antibiotic coverage with regimens such as Piperacillin-tazobactam plus Vancomycin, or Imipenem-cilastatin, or Meropenem plus Clindamycin should be considered, as recommended by the Surgical Infection Society (SIS) 2
• Chlamydia trachomatis and Neisseria gonorrhoeae are the most common bacterial STIs affecting semen quality, often asymptomatic but can cause epididymitis and urethritis, leading to reduced sperm count and motility, according to the Centers for Disease Control and Prevention (CDC) 3
• First-void urine can be used for nucleic acid amplification test (NAAT) to detect Chlamydia and Gonorrhea, as recommended by the European Association of Urology (EAU) 2
• Diagnostic evaluation for epididymitis should include urethral swab or first-void urine for STI testing, urinalysis and urine culture, and scrotal ultrasound with Doppler, as recommended by the CDC guidelines 4, 5, 3
• The American College of Radiology recommends scrotal ultrasound with Doppler as the initial imaging for acute scrotal pain to rule out torsion, masses, or epididymitis in patients with testicular symptoms, with a strength of evidence level I 6
• The following table highlights the key differences between epididymo-orchitis and testicular torsion:

STI Treatment

• Azithromycin 1g orally in a single dose is recommended for Chlamydia trachomatis treatment, as suggested by the CDC and the American College of Physicians (ACP) 3, 8
• Doxycycline 100mg orally twice daily for 7 days is an alternative treatment for Chlamydia trachomatis, according to the CDC 3
• Ceftriaxone 250-1000mg IM single dose PLUS Azithromycin 1g orally in a single dose OR Doxycycline 100mg orally twice daily for 7 days is recommended for Neisseria gonorrhoeae treatment, as reported by the CDC 3
• First-line therapy with Ceftriaxone 250 mg IM single dose PLUS Doxycycline 100 mg orally twice daily for 10-21 days is recommended for epididymitis, according to the CDC and the European Urology guideline 4, 5, 3, 2
• Alternative treatment includes Ofloxacin 300 mg orally twice daily for 10 days OR Levofloxacin 500 mg orally once daily for 10 days, as recommended by the CDC for patients with allergies to cephalosporins or tetracyclines, or those over 35 years 5, 3, 4

Patient Management

• All sexual partners from the past 60 days should be evaluated and treated, and both patient and partners should abstain from sexual intercourse until treatment is completed and all are symptom-free, as recommended by the CDC 3
• Supportive measures including bed rest, scrotal elevation, and non-steroidal anti-inflammatory drugs can be used for pain management, as recommended by the American Academy of Pediatrics and the CDC 4, 5, 3
• Clinical improvement should occur within 3 days of starting treatment, and if no improvement is seen, diagnosis and therapy should be reevaluated, as recommended by the CDC 3, 5, 4
• Protected vaginal sex with condoms provides approximately 80-90% protection against STI transmission when used correctly, according to the CDC guidelines 3
• Neglecting partner treatment can lead to reinfection, emphasizing the importance of addressing partner evaluation and treatment, with a strength of evidence level I 3

Complications and Warning Signs

• Warning signs requiring immediate surgical exploration include sudden onset of severe unilateral scrotal pain, nausea/vomiting, high-riding testicle, and absent cremasteric reflex, with a strength of evidence level I 9, 6
• Potential complications include abscess formation, testicular ischemia, infertility, and chronic scrotal pain, as reported by the CDC 5
• Fluoroquinolones carry risks including QTc prolongation, tendon rupture (especially in elderly), neuropsychiatric disturbances, and hypoglycemia, as recommended by the FDA 10