Treatment of Pilonidal Abscess
Surgical Management
- The American College of Surgeons recommends emergency drainage for patients presenting with sepsis, severe sepsis, septic shock, immunosuppression, diabetes mellitus, or diffuse cellulitis 1
- For stable patients without these risk factors, surgical drainage should ideally occur within 24 hours, as recommended by the American College of Surgeons 1, 2
- The procedure should keep the incision as close as possible to the anal verge to minimize potential fistula length while ensuring adequate drainage, as suggested by the American College of Surgeons 1
- Complete drainage is essential—inadequate drainage is strongly associated with high recurrence rates, according to the American College of Surgeons 1
- For large abscesses, use multiple counter incisions rather than a single long incision to avoid step-off deformity and delayed healing, as recommended by the American College of Surgeons 1
Antibiotic Therapy
- The Infectious Diseases Society of America recommends that antibiotics are NOT routinely indicated after adequate surgical drainage 1
- Consider antibiotics only in the following situations: presence of sepsis or systemic infection, surrounding soft tissue infection or extensive cellulitis, immunocompromised patients, or incomplete source control, as suggested by the Infectious Diseases Society of America 1
- Use empiric broad-spectrum coverage for gram-positive, gram-negative, and anaerobic bacteria, as these abscesses are frequently polymicrobial, according to the Infectious Diseases Society of America 1
- For patients requiring IV antibiotics, Piperacillin-tazobactam 3.375g IV every 6 hours provides comprehensive coverage, as recommended by the Infectious Diseases Society of America 1
- Add MRSA coverage (vancomycin or linezolid) in recurrent cases, as MRSA prevalence can reach 35% in perirectal abscesses, according to the Infectious Diseases Society of America 1
- Duration of antibiotic therapy: 5-10 days following operative drainage, as suggested by the Infectious Diseases Society of America 1
Post-Operative Care
- Elevation of the affected area is recommended, as suggested by the Clinical Infectious Diseases society 3
- Routine imaging after incision and drainage is not required, according to the American College of Surgeons 1
- Consider follow-up imaging only in cases of recurrence, suspected inflammatory bowel disease, or evidence of fistula or non-healing wound, as recommended by the American College of Surgeons 1
- Risk factors for recurrence include inadequate drainage, loculations (up to 44% recurrence), horseshoe-type abscess, and delayed time from disease onset to incision, according to the American College of Surgeons 1