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A validation study of cT-categories in the Swedish national urinary bladder cancer register - Norrland University Hospital
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Urology and Andrology.
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Urology and Andrology.
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Urology and Andrology.ORCID iD: 0000-0001-7921-2425
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Urology and Andrology.
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2023 (English)In: Journal of Personalized Medicine, E-ISSN 2075-4426, Vol. 13, no 7, article id 1163Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: In Sweden, all patients with urinary bladder cancer (UBC) are recorded in the Swedish National Register for Urinary Bladder Cancer (SNRUBC). The purpose of this study was to validate the registered clinical tumour categories (cT-categories) in the SNRUBC for Norrland University Hospital, Sweden, from 2009 to 2020, inclusive.

METHODS: The medical records of all 295 patients who underwent radical cystectomy for the treatment of UBC were reviewed retrospectively. Possible factors impacting the cT-categories were identified. To optimise cT-classification, computed tomography urography of all patients with suspected tumour-associated hydronephrosis (TAH) or suspected tumour in bladder diverticulum (TIBD) were retrospectively reviewed by a radiologist. Discrepancy was tested with a logistic regression model.

RESULTS: cT-categories differed in 87 cases (29.5%). Adjusted logistic regression analysis found TIBD and TAH as significant predictors for incorrect registration; OR = 7.71 (p < 0.001), and OR = 17.7, (p < 0.001), respectively. In total, 48 patients (68.6%) with TAH and 12 patients (52.2%) with TIBD showed discrepancy regarding the cT-category. Incorrect registration was mostly observed during the years 2009-2012.

CONCLUSION: The study revealed substantial incorrect registration of cT-categories in SNRUBC. A major part of the misclassifications was related to TAH and TIBD. Registration of these variables in the SNRUBC might be considered to improve correct cT-classification.

Place, publisher, year, edition, pages
MDPI, 2023. Vol. 13, no 7, article id 1163
Keywords [en]
hydronephrosis, neoplasm staging, tumour in bladder diverticulum, urinary bladder neoplasm, validation study
National Category
Urology and Nephrology
Identifiers
URN: urn:nbn:se:umu:diva-212875DOI: 10.3390/jpm13071163ISI: 001038517500001PubMedID: 37511776Scopus ID: 2-s2.0-85166304439OAI: oai:DiVA.org:umu-212875DiVA, id: diva2:1787655
Available from: 2023-08-14 Created: 2023-08-14 Last updated: 2023-09-26Bibliographically approved

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Wiberg, ErikEriksson, VictoriaBanday, Viqar ShowkatSvensson, JohanEriksson, Elisabeth KSherif, Amir

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