What is the diagnosis and recommended management for a 19-year-old male presenting with right testicular pain, a hard scrotal swelling, and pus discharge from the right side?

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Diagnosis: Scrotal Abscess (Pyocele) Secondary to Epididymo-orchitis

The most likely diagnosis in this 19-year-old male with testicular pain, hard swelling, and purulent discharge from the scrotum is a scrotal abscess (pyocele) complicating acute epididymo-orchitis, which requires urgent surgical drainage combined with broad-spectrum antibiotics.

Clinical Reasoning

The combination of testicular pain, hard swelling, and pus discharge from the scrotum is pathognomonic for a scrotal abscess. In a 19-year-old male, acute epididymo-orchitis is the most common cause of acute scrotal pain 1, and when complicated by abscess formation, purulent material can rupture through the tunica albuginea into the tunica vaginalis space (pyocele) or through the scrotal skin 2.

Key Diagnostic Features:

  • Age group: Epididymo-orchitis is the most common cause of acute scrotum in adolescent boys and adults 1
  • Pus discharge: Indicates rupture of an abscess through the scrotal wall
  • Hard swelling: Suggests inflammatory mass or abscess formation rather than simple hydrocele

Critical Differential Diagnoses to Exclude

1. Testicular Torsion (Surgical Emergency)

While less likely given the pus discharge, torsion must be ruled out immediately as it requires surgical exploration within 6-8 hours to prevent testicular loss 1. However, the presence of purulent discharge makes this diagnosis unlikely.

2. Fournier Gangrene (Life-Threatening Emergency)

This is the most critical pitfall to avoid. Examine carefully for:

  • Crepitus in the scrotal wall
  • Rapidly spreading erythema beyond the scrotum
  • Systemic toxicity (fever, hypotension, tachycardia)
  • Skin necrosis or bullae

If any signs of Fournier gangrene are present, this requires immediate aggressive surgical debridement 2.

3. Tuberculous Epididymo-orchitis

Consider in patients from TB-endemic areas or with risk factors. TB can present with chronic scrotal swelling and abscess formation 3, 4.

4. Intra-abdominal Pathology with Patent Processus Vaginalis

Rarely, acute appendicitis can present with scrotal abscess through a patent processus vaginalis 5, 6, 7. Check for abdominal tenderness.

Immediate Management Algorithm

Step 1: Urgent Assessment (Within Minutes)

  • Vital signs: Check for sepsis (fever, tachycardia, hypotension)
  • Scrotal examination: Assess for Fournier gangrene signs
  • Abdominal examination: Rule out intra-abdominal source
  • Blood work: CBC, CRP, blood cultures if febrile

Step 2: Imaging

Scrotal ultrasound with Doppler should be obtained 8:

  • Confirms abscess/pyocele (may show "falling snow" sign, loculations, or gas) 2
  • Assesses testicular perfusion to rule out torsion
  • Evaluates extent of involvement

Step 3: Immediate Treatment

Broad-spectrum antibiotics should be started immediately:

  • Cover sexually transmitted infections (Chlamydia, Gonorrhea) in this age group
  • Cover urinary tract pathogens (E. coli, Enterococcus)
  • Suggested regimen: Ceftriaxone 250mg IM once PLUS Doxycycline 100mg PO BID for 10-14 days
  • If systemically ill: IV antibiotics (Piperacillin-tazobactam or Ceftriaxone + Metronidazole)

Step 4: Surgical Consultation (Urgent)

Early urology/general surgery consultation is mandatory 2:

  • Incision and drainage of the abscess
  • Intraoperative assessment of testicular viability
  • Send purulent material for:
    • Gram stain and culture (aerobic and anaerobic)
    • AFB stain and culture if TB suspected
  • Consider orchiectomy only if testis is non-viable

Step 5: Supportive Care

  • Pain control
  • Scrotal elevation
  • Fluid resuscitation if septic

Common Pitfalls to Avoid

  1. Delaying surgery: Scrotal abscesses require drainage; antibiotics alone are insufficient
  2. Missing Fournier gangrene: Always examine beyond the immediate area of swelling
  3. Failing to obtain cultures: Essential for targeted antibiotic therapy
  4. Not considering TB: Especially in endemic areas or with chronic presentation 3, 4
  5. Overlooking intra-abdominal pathology: Examine the abdomen thoroughly 5, 6, 7

Post-Operative Management

  • Continue antibiotics based on culture results for 10-14 days
  • If TB confirmed on histopathology: Start standard 4-drug anti-tubercular therapy (isoniazid, rifampicin, ethambutol, pyrazinamide) for 9 months 3
  • Follow-up ultrasound to ensure resolution
  • Screen sexual partners if STI identified

References

5
Research

Scrotal abscess with a rare cause.

Journal of Indian Association of Pediatric Surgeons, 2009

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