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Computed tomography for the management of exit-site and tunnel infections in peritoneal dialysis patients

, : Computed tomography for the management of exit-site and tunnel infections in peritoneal dialysis patients
. Clinical Nephrology 86 ()(12): 328-332

To evaluate the effectiveness of computed tomography (CT) for detection of exit-site and tunnel infections with a Tenckhoff catheter. The study enrolled patients with exit-site or tunnel infections who underwent ultrasonography (US), CT scans, and subsequent catheter removal or partial catheter reimplantation from 2010 to 2014. Control cases on peritoneal dialysis who underwent abdominal CT scans for other reasons were randomly selected. Attenuation of the soft tissue around the Tenckhoff catheter was measured in Hounsfield units (HU). 9 infected cases and 15 control cases were identified. CT showed increased attenuation around the catheter in all cases, while ultrasonography detected a hypoechoic area only in one case with abscess formation. Maximal attenuation of the inflamed soft tissue was high (median, 36 HU) compared with normal fatty tissue (median, -75 HU). In all cases, one or two sites with increased fat density were observed focally along the catheter, and these areas did not always extend directly from the exit site. In this retrospective study comprising a small number of cases, increased attenuation of fatty tissue around the Tenckhoff catheter correlated with exit-site or tunnel infections. CT might be an auxiliary tool for diagnosis, although CT costs much more than US and is not always available in general practice. Further prospective studies are needed.


PMID: 27805563

DOI: 10.5414/CN108928

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