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Percutaneous abdomino-pelvic abscess drainage in complicated Crohn’s disease

, Laureti Silvio, Capozzi Nunzia, Mosconi Cristina, Modestino Francesco, Peta Giuliano, Fernando Rizzello, Bruno Antonio, Vara Giulio, De Benedittis Caterina,
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Abstract: Purpose: Percutaneous abscess drainage (PAD) is the first-line approach for abscess in Crohn’s disease (CD) since it procrastinates or avoids surgery especially in postoperative abscesses [within 30 days post-operative (p.o.)]. We retrospectively evaluated the effectiveness, complications and outcome after PAD in postoperative and spontaneous abscesses and factors influencing the outcomes. Methods: We performed PAD in 91 abscesses, 45 (49,5%) postoperative and 46 (50,5%) spontaneous. We defined the overall success (OS) as clinical (CS) and technical success (TS) when imaging documented the resolution of the abscess with no surgery within 30 days. Conversely, patients without abscess at the time of surgery, were considered as TS but clinical failure (CF). We also analyzed the overall failure (OF) defined as CF with or without technical failure (TF). Overall technical success (OTS) was OS plus TS. Complications were classified as major and minor according to the Interventional Radiology Criteria. Results: In postoperative abscesses we found 91% OS, 9% OF, no TF and 100% OTS. In spontaneous abscesses we found 33% OS, 67% OF, 6.4% TF, 95,6% OTS. A total abscess resolution was achieved in 97,8% of patients. No major complication occurred; only 1 case of minor complication. Factors statistically influencing the outcome were postoperative vs spontaneous collections (OF: 9% vs. 67%, p < 0.0001), multiloculated vs uniloculated collections (OF: 38% vs. 1%, p < 0.0001) and upper abdominal vs lower location (OF: 13% vs. 25%, p <0.05). Conclusion: Our data confirms the safety and effectiveness of PAD even in cases needing surgery within 30 days; most remarkable, PAD allows avoidance of early reoperation in almost all the patients with postoperative abscess.
Keywords: PAD / abscess / surgery / postoperative / Crohn / Percutaneous / minor / drainage

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