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  • Title: [Computerized tomography-guided drainage of postoperative abdominal fluid collections].
    Author: Marano I, Mainenti PP, Selva G, Cannavale M, Sodano A.
    Journal: Radiol Med; 1999 Mar; 97(3):160-5. PubMed ID: 10363058.
    Abstract:
    INTRODUCTION: We report our personal technique and the results of CT-guided percutaneous drainage of postoperative abdominal fluid collections. MATERIAL AND METHODS: January 1990 to March 1998, eighty-three patients were treated for postoperative abdominal fluid collections. Forty-eight patients had undergone bowel resection, 11 laparoscopic cholecystectomy, 3 cholecystectomy, 5 splenectomy, 3 cephalopancreasectomy, 6 hepaticojejunal anastomosis, 4 hepatic resection, 2 laparocele, 1 hysterectomy. The complications had developed few days to about one year postoperatively. The suspicion of abdominal fluid collection was supported by clinical and laboratory findings. All patients were submitted to a preliminary CT scan to locate the fluid collection, assess its morphology and relationships with surrounding structures, and plan the safest access route. After local anesthesia, a trial fine needle (Chiba 20-22 G) aspiration was performed and then the draining tube was inserted into the collection under CT guidance; the tube caliber depended on the fluid amount and viscosity. After drainage, the tube was removed if CT showed complete resolution of the fluid collection; otherwise it was left in place for subsequent washing of the cavity. Based on clinical, laboratory and CT findings, another CT-guided percutaneous drainage was judged necessary in 30 patients, 2-9 days after the first one. Drainage was considered successful when sepsis resolved and no further percutaneous/surgical drainages were needed. RESULTS: CT-guided percutaneous drainage was successful in 61 of 83 patients (73.5%); the fluid collection resolved after one drainage in 26/61 patients, in 2-9 days in 18/61, and after a second CT-guided drainage in 17/61. Drainage was not resolutive in 22 of 83 patients, because major postoperative complications required laparotomic surgery; these complications were fistulas (anastomotic in 12 cases; pancreatic in 5 and biliary in 3) and segmentary bowel necrosis in 2 cases. Intracavitary bleeding as a catheter-related complication occurred only in one patient with an anterior abdominal wall abscess. CONCLUSIONS: CT-guided percutaneous drainage offers many advantages over surgery: it is less invasive, can be repeated and requires no anesthesia; there are no surgery-related risks and lower morbidity and mortality rates. Moreover, subsequent hospitalization is shorter and costs are consequently reduced. We conclude that CT-guided percutaneous drainage is the method of choice in the treatment of postoperative abdominal fluid collections.
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