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Dialysis |
* Imperial College Kidney and Transplant Institute and Department of Radiology, Hammersmith Hospital, London, United Kingdom
Correspondence: Dr. Ruth M. Tarzi, Renal Section, Imperial College London, Hammersmith Hospital, Du Cane Road, London W12 0NN, United Kingdom. Phone: + 44 20 8383 2315; Fax: +44 20 8383 2062; E-mail: r.tarzi{at}imperial.ac.uk
Background and objectives: Encapsulating peritoneal sclerosis (EPS) is a severe peritoneal fibrotic reaction in patients on long-term peritoneal dialysis (PD). The early clinical features may be nonspecific. The purpose of the study is to assess the reliability and diagnostic utility of abdominal CT scanning in the diagnosis of EPS.
Design, setting, participants, & measurements: Abdominopelvic CT scans of 27 patients diagnosed with EPS on clinical and radiologic grounds in our unit from 1997 to 2006 were retrospectively analyzed. In addition, 35 control CT scans were scored: 15 from hemodialysis patients (HD controls) and 20 from patients on PD (PD controls). Scans were anonymized and scored independently by three radiologists.
Results: Inter-rater agreement was moderate to very good (kappa = 0.40 to 0.75) for peritoneal calcification, bowel distribution, bowel wall thickening, and bowel dilation but poorer for loculation of ascites and peritoneal thickening. There was a strongly significant difference between the total CT scan scores at EPS diagnosis and controls (P < 0.00001). Each individual parameter also showed significant differences between EPS and controls (P < 0.006). Bowel tethering and peritoneal calcification were the most specific parameters, and. loculation was the least discriminatory parameter. Interestingly, prediagnostic scans a median of 1.5 yr before EPS diagnosis were normal or near-normal in 9 of 13 EPS patients.
Conclusions: CT scanning is a valid and reliable adjunct to the diagnosis of EPS but may not be useful as a screening tool, as the prediagnostic scans did not show abnormalities in many patients who subsequently developed EPS.
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A. Vlijm, J. Stoker, S. Bipat, A. M. Spijkerboer, S. S.K.S. Phoa, R. Maes, D. G. Struijk, and R. T. Krediet COMPUTED TOMOGRAPHIC FINDINGS CHARACTERISTIC FOR ENCAPSULATING PERITONEAL SCLEROSIS: A CASE-CONTROL STUDY Perit. Dial. Int., September 1, 2009; 29(5): 517 - 522. [Abstract] [Full Text] [PDF]
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 M. C. Brown, K. Simpson, J. J. Kerssens, R. A. Mactier, and on behalf of the Scottish Renal Registry Encapsulating Peritoneal Sclerosis in the New Millennium: A National Cohort Study Clin. J. Am. Soc. Nephrol., July 1, 2009; 4(7): 1222 - 1229. [Abstract] [Full Text] [PDF]
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