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Infected seroma after surgical procedure — Clinical Guidelines

Overview

Infected seroma following surgical procedures, particularly those involving extensive tissue undermining such as abdominoplasty and breast reduction, represents a significant postoperative complication. It arises from the accumulation of fluid within the surgical site, often complicated by bacterial infection, leading to increased morbidity, prolonged recovery times, and potential aesthetic or functional impairment. Patients undergoing these procedures, predominantly adults seeking aesthetic or reconstructive surgery, are at risk. Effective management is crucial in day-to-day practice to minimize complications and ensure optimal patient outcomes 1 3 5 10 11 13.

Pathophysiology

Seroma formation typically begins with the creation of dead space during surgery, where tissue undermining and flap manipulation leave areas devoid of adequate blood supply. This dead space accumulates serous fluid, primarily composed of plasma filtrate, due to the imbalance between fluid production and absorption. Infection can ensue when bacteria colonize this fluid-filled space, often introduced during surgery or via hematogenous spread. The inflammatory response to infection exacerbates fluid accumulation and can lead to cellulitis or abscess formation, further complicating the clinical picture 1 13.

Epidemiology

The incidence of seroma following abdominoplasty ranges from approximately 10% to 42%, with infection complicating a subset of these cases 1 10 13. Risk factors include extensive undermining, prolonged surgery time, and the presence of drains. Age, obesity, and underlying medical conditions such as diabetes may also elevate the risk. Geographic and demographic variations are less emphasized in the literature, but trends suggest a consistent challenge across different populations. Over time, there has been a growing interest in techniques to reduce seroma formation, such as progressive tension suturing (PTS) and the judicious use of drains, reflecting evolving surgical practices 1 10 13.

Clinical Presentation

Patients typically present with localized swelling, tenderness, and warmth at the surgical site, often accompanied by systemic symptoms if infection is present, such as fever, malaise, and elevated white blood cell count. A palpable fluid collection may be noted, and in severe cases, signs of systemic infection like tachycardia and hypotension can emerge. Red-flag features include rapid progression of symptoms, significant pain disproportionate to physical findings, and signs of systemic toxicity, necessitating urgent evaluation and intervention 1 13.

Diagnosis

The diagnostic approach involves a thorough clinical examination supplemented by imaging studies such as ultrasound or CT scans, which can confirm fluid accumulation and assess for abscess formation. Laboratory tests, including white blood cell counts and inflammatory markers (e.g., C-reactive protein), help in assessing the presence and severity of infection. Specific criteria for diagnosing an infected seroma include:

Clinical Signs: Localized swelling, erythema, warmth, and tenderness.

Laboratory Tests:

- Elevated white blood cell count (WBC ≥ 10,000/μL) 1 - Elevated C-reactive protein (CRP > 10 mg/L) 1

Imaging:

- Ultrasound showing fluid collection with internal echoes suggestive of infection 1 - CT scan confirming fluid accumulation and possible abscess 1

Differential Diagnosis:

Hematoma: Presence of clotted blood on imaging, absence of significant warmth and systemic symptoms 1

Cellulitis: Less localized fluid collection, absence of palpable fluid, milder systemic symptoms 1

Abscess: More localized, fluctuant mass with purulent drainage on aspiration 1

Management

Initial Management

Drainage: Ultrasound-guided aspiration of the seroma to relieve pressure and collect fluid for culture and sensitivity testing 1 13.

Antibiotics: Broad-spectrum antibiotics initiated empirically based on clinical suspicion and local resistance patterns, adjusted according to culture results 1.

Secondary Management

Wound Care: Regular dressing changes, maintaining a clean wound environment to prevent further infection 1.

Supportive Care: Pain management with NSAIDs or opioids as needed, hydration, and monitoring for systemic signs of infection 1.

Refractory Cases

Surgical Intervention: If conservative measures fail, surgical evacuation of the infected fluid collection and debridement may be necessary 1 13.

Specialist Referral: Consultation with infectious disease specialists for complex cases or those with systemic involvement 1.

Specific Considerations:

Contraindications: Avoid aggressive drainage in cases with significant vascular compromise or when there is a high risk of bleeding 1.

Monitoring: Regular follow-up with clinical assessment and repeat imaging to ensure resolution and prevent recurrence 1.

Complications

Chronic Infection: Persistent drainage and recurrent seroma formation requiring repeated interventions 1.

Systemic Complications: Sepsis, especially in immunocompromised patients, necessitating ICU admission and aggressive antibiotic therapy 1.

Aesthetic Issues: Scarring, contour irregularities, and delayed wound healing impacting patient satisfaction 1.

Refer patients with signs of systemic infection, persistent drainage, or failure to respond to initial management to surgical specialists for further evaluation and intervention 1.

Prognosis & Follow-up

The prognosis for infected seromas generally improves with prompt and appropriate management, though recurrence remains a concern, particularly in high-risk patients. Prognostic indicators include the rapidity of diagnosis, the severity of infection, and adherence to postoperative care protocols. Recommended follow-up intervals typically include:

Initial: Daily or every other day for the first week post-drainage 1.

Subsequent: Weekly for the first month, then monthly until complete resolution 1.

Special Populations

Pediatric Patients: Infants and children may have unique healing dynamics; conservative management is preferred, with close monitoring for signs of systemic infection 1.

Elderly Patients: Increased risk of complications due to comorbidities; tailored antibiotic therapy and vigilant monitoring are essential 1.

Obese Patients: Higher risk of seroma formation and infection; meticulous wound care and possibly extended drain placement may be necessary 1.

Diabetic Patients: Higher susceptibility to infections; tight glycemic control is crucial alongside standard management protocols 1.

Key Recommendations

Prompt Drainage: Perform ultrasound-guided aspiration of infected seromas to relieve pressure and obtain fluid for culture 1 (Evidence: Strong)

Empirical Antibiotics: Initiate broad-spectrum antibiotics immediately after clinical suspicion of infection, adjusting based on culture results 1 (Evidence: Strong)

Regular Monitoring: Schedule frequent follow-ups, including clinical assessments and imaging, to monitor resolution and prevent recurrence 1 (Evidence: Moderate)

Consider Surgical Intervention: For refractory cases, surgical evacuation and debridement may be necessary 1 (Evidence: Moderate)

Use of Progressive Tension Sutures: Employ PTS techniques to reduce seroma formation in high-risk procedures like abdominoplasty 10 (Evidence: Moderate)

Avoid Unnecessary Drains: Limit the use of drains to reduce infection risk, especially in procedures where PTS can be effectively utilized 6 (Evidence: Moderate)

Patient Education: Educate patients on signs of infection and the importance of adherence to postoperative care instructions 1 (Evidence: Expert opinion)

Risk Factor Management: Address underlying risk factors such as diabetes and obesity preoperatively to minimize complications 1 (Evidence: Moderate)

Imaging for Diagnosis: Utilize ultrasound or CT scans for definitive diagnosis and monitoring of seroma and infection progression 1 (Evidence: Strong)

Refer Complex Cases: Consult infectious disease specialists for complex or systemic infections 1 (Evidence: Expert opinion)

References

1 Rao G, Daneshi K, Ceccaroni A, Gentile A, El-Shazali H, Owens N et al.. A Systematic Review and Meta-Analysis Evaluating the Surgical Outcomes of Progressive Tension Suturing Compared to Drains in Abdominoplasty Surgery. Aesthetic surgery journal 2024. link 2 Hinrichs DL, Debus ES, Grundmann RT. Surgical publication activity in the English literature over a 10-year interval. BJS open 2019. link 3 Kothari SN, Broderick TJ, DeMaria EJ, Merrell RC. Evaluation of operative imaging techniques in surgical education. JSLS : Journal of the Society of Laparoendoscopic Surgeons 2004. link 4 Irving M, Temple J. Surgical audit: one year's experience in a teaching hospital. British medical journal 1976. link 5 Kuruoglu D, Nguyen MT, Antezana LA, Curiel D, Vijayasekaran A, Martinez-Jorge J et al.. Predictors of seroma after breast reduction: When should drains be considered?. Journal of plastic, reconstructive & aesthetic surgery : JPRAS 2025. link 6 Kalmar CL, White-Dzuro CG, Mok JW, Perdikis G. Reduction Mammaplasty: Closed Suction Drains Do Not Reduce Hematoma or Seroma But Increase Infection Risk. Annals of plastic surgery 2025. link 7 Berg A, Cho NY, Chattopadhyay K, Narayan S, Alawa J, Spain DA et al.. Time delay and evidence profiles forming clinical recommendations of US surgical society guidelines. Surgery 2025. link 8 Schwartzberg HG, Doran HE, Bartow MJ, Patterson C, Stalder MW, Allen RJ et al.. Increased Time Interval of Postoperative Flap Monitoring After Autologous Breast Reconstruction. Annals of plastic surgery 2024. link 9 Monteiro IA, de Sousa Barros A, Costa-Ferreira A. Postbariatric Abdominoplasty: A Comparative Study on Scarpa Fascia Preservation Versus Classical Technique. Aesthetic plastic surgery 2023. link 10 Paranzino AB, Sims J, Kirn DS. Safety and Efficacy of Outpatient Drainless Abdominoplasty: A Single-Surgeon Experience of 454 Consecutive Patients. Aesthetic surgery journal 2023. link 11 Brown T, Murphy K, Murphy T. The Effect of Drains and Compressive Garments Versus Progressive Tensioning Sutures on Seroma Formation in Abdominoplasty. Aesthetic plastic surgery 2023. link 12 Souto LRM. Invited Discussion on: Global Prevalence and Preferences of Progressive Tension Suture Usage in Abdominoplasties. Aesthetic plastic surgery 2023. link 13 Salari N, Fatahi B, Bartina Y, Kazeminia M, Heydari M, Mohammadi M et al.. The Global Prevalence of Seroma After Abdominoplasty: A Systematic Review and Meta-Analysis. Aesthetic plastic surgery 2021. link 14 Obiarinze R, Goyer S, Minton H, Wood T, Chen H, Corey B. From Presentation to Publication: Where did Abstracts at the 2017 Academic Surgical Congress End up? A Three-Year Analysis. The Journal of surgical research 2021. link 15 Debry L, Luu J, Boulanger L, Le Deley MC, Régis C. Reducing the seroma volume by quilting suture after breast reconstruction with a latissimus dorsi flap: Single institutional experience. Bulletin du cancer 2020. link 16 Marquez JE, Kapadia K, Ghosh K, Silvestri B, Singh G, Huston TL. Efficacy of Fibrin Sealants in Preventing Seroma Formation in Reduction Mammaplasty: A Single Surgeon's Experience. Annals of plastic surgery 2020. link 17 Paracha M, Hirsch AE, Tseng JF, McAneny DB, Sachs TE. Scholarly impact of student authorship on surgical research. American journal of surgery 2019. link 18 Wang Q, Wang J, Li P. Lymphocele Following Liposuction in the Thigh. Aesthetic plastic surgery 2017. link 19 Hart AM, Duggal C, Pinell-White X, Losken A. A Prospective Randomized Trial of the Efficacy of Fibrin Glue, Triamcinolone Acetonide, and Quilting Sutures in Seroma Prevention after Latissimus Dorsi Breast Reconstruction. Plastic and reconstructive surgery 2017. link 20 Wells CI, Robertson JP, O'Grady G, Bissett IP. Trends in publication of general surgical research in New Zealand, 1996-2015. ANZ journal of surgery 2017. link 21 Sideris M, Papalois A, Theodoraki K, Dimitropoulos I, Johnson EO, Georgopoulou EM et al.. Promoting Undergraduate Surgical Education: Current Evidence and Students' Views on ESMSC International Wet Lab Course. Journal of investigative surgery : the official journal of the Academy of Surgical Research 2017. link 22 Janis JE, Khansa L, Khansa I. Strategies for Postoperative Seroma Prevention: A Systematic Review. Plastic and reconstructive surgery 2016. link 23 Sowa Y, Numajiri T, Kawarazaki A, Sakaguchi K, Taguchi T, Nishino K. Preventive effects on seroma formation with use of the harmonic focus shears after breast reconstruction with the latissimus dorsi flap. Journal of plastic surgery and hand surgery 2016. link 24 van der Weegen W, Smolders JM, Sijbesma T, Hoekstra HJ, Brakel K, van Susante JL. High incidence of pseudotumours after hip resurfacing even in low risk patients; results from an intensified MRI screening protocol. Hip international : the journal of clinical and experimental research on hip pathology and therapy 2013. link 25 Mariette C, Piessen G, Robb WB. Publishing in surgery: how and why?. Langenbeck's archives of surgery 2013. link 26 Moyer KE, Potochny JD. Technique for seroma drainage in implant-based breast reconstruction. Journal of plastic, reconstructive & aesthetic surgery : JPRAS 2012. link 27 Crowley TP, Jones AP, Milner RH. Spontaneous auricular seroma. Journal of plastic, reconstructive & aesthetic surgery : JPRAS 2012. link 28 Harper JG, Elliott LF, Bergey P. The use of autologous platelet-leukocyte-enriched plasma to minimize drain burden and prevent seroma formation in latissimus dorsi breast reconstruction. Annals of plastic surgery 2012. link 29 Koller M, Hintringer T. Scarpa fascia or rectus fascia in abdominoplasty flap elevation: a prospective clinical trial. Aesthetic plastic surgery 2012. link 30 Dukić V, Udiljak N, Bartolić N, Vargović M, Kuduz R, Boban N et al.. Surgical scientific publication and the 1991-1995 war in Croatia. Collegium antropologicum 2011. link 31 Rodby KA, Stepniak J, Eisenhut N, Lentz CW. Abdominoplasty with suction undermining and plication of the superficial fascia without drains: a report of 113 consecutive patients. Plastic and reconstructive surgery 2011. link 32 Kain N, Kotur K, Gupta S. Evidence based surgery--do we practice what we preach?. The surgeon : journal of the Royal Colleges of Surgeons of Edinburgh and Ireland 2011. link 33 Stebbins WG, Hanke CW, Petersen J. Ultrasound-guided drainage of a seroma following tumescent liposuction. Dermatologic therapy 2011. link 34 Najera RM, Asheld W, Sayeed SM, Glickman LT. Comparison of seroma formation following abdominoplasty with or without liposuction. Plastic and reconstructive surgery 2011. link 35 Gruber S, Whitworth AB, Kemmler G, Papp C. New risk factors for donor site seroma formation after latissimus dorsi flap breast reconstruction: 10-year period outcome analysis. Journal of plastic, reconstructive & aesthetic surgery : JPRAS 2011. link 36 Beer GM, Wallner H. Prevention of seroma after abdominoplasty. Aesthetic surgery journal 2010. link 37 Adam A, Hutchison JD, Scotland TR. The strange case of Sir Henry Gray. Scottish medical journal 2010. link 38 Ferreira EA, Rasslan S. Surgical education in Brazil. World journal of surgery 2010. link 39 Gilbert TW, Badylak SF, Gusenoff J, Beckman EJ, Clower DM, Daly P et al.. Lysine-derived urethane surgical adhesive prevents seroma formation in a canine abdominoplasty model. Plastic and reconstructive surgery 2008. link 40 Scott TM, Hameed SM, Evans DC, Simons RK, Sidhu RS. Objective assessment of surgical decision making in trauma after a laboratory-based course: durability of cognitive skills. American journal of surgery 2008. link 41 Anzarut A, Edwards DC, Calder K, Guenther CR, Tsuyuki R. Superior pedicle breast reduction techniques increase the risk of postoperative drainage. Annals of plastic surgery 2008. link 42 Taghizadeh R, Shoaib T, Hart AM, Weiler-Mithoff EM. Triamcinolone reduces seroma re-accumulation in the extended latissimus dorsi donor site. Journal of plastic, reconstructive & aesthetic surgery : JPRAS 2008. link 43 Butler CE. Treatment of refractory donor-site seromas with percutaneous instillation of fibrin sealant. Plastic and reconstructive surgery 2006. link 44 Knaebel HP, Diener MK, Wente MN, Bauer H, Büchler MW, Rothmund M et al.. The Study Centre of the German Surgical Society--rationale and current status. Langenbeck's archives of surgery 2005. link 45 Clough KB, Louis-Sylvestre C, Fitoussi A, Couturaud B, Nos C. Donor site sequelae after autologous breast reconstruction with an extended latissimus dorsi flap. Plastic and reconstructive surgery 2002. link 46 Perkins SW, Williams JD, Macdonald K, Robinson EB. Prevention of seromas and hematomas after face-lift surgery with the use of postoperative vacuum drains. Archives of otolaryngology--head & neck surgery 1997. link

Infected seroma after surgical procedure