Evidence map›Paper›PMID 36828626›Full record

ArticleGut2023

Definition of age-dependent reference values for the diameter of the common bile duct and pancreatic duct on MRCP: a population-based, cross-sectional cohort study.

Georg Beyer, Florian Kasprowicz, Anke Hannemann, Ali Aghdassi, Patrick Thamm, Henry Volzke, Markus M Lerch, Jens-Peter Kühn, Julia Mayerle

Abstract read
In one paragraph

Article in Gut, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Georg Beyer *Department of Medicine II, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany.ORCID 0000-0002-7607-8264
Florian Kasprowicz *Department of Medicine II, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany.
Anke HannemannInstitute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Mecklenburg-Vorpommern, Germany.
Ali AghdassiDepartment of Medicine A, University Medicine Greifswald, Greifswald, Mecklenburg-Vorpommern, Germany.ORCID 0000-0002-0569-7316
Patrick ThammInstitute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Mecklenburg-Vorpommern, Germany.
Henry VolzkePartner Site Greifswald, German Centre for Cardiovascular Research (DZHK), Greifswald, Germany.
Markus M LerchDepartment of Medicine A, University Medicine Greifswald, Greifswald, Mecklenburg-Vorpommern, Germany.ORCID 0000-0002-9643-8263
Jens-Peter KühnInstitute of Diagnostic Radiology and Neuroradiology, University Medicine Greifswald, Greifswald, Mecklenburg-Vorpommern, Germany.
Julia MayerleDepartment of Medicine II, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany julia.mayerle@med.uni-muenchen.de.ORCID 0000-0002-3666-6459

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveChanges of the pancreaticobiliary ducts herald disease. Magnetic resonance cholangiopancreatography (MRCP) allows accurate duct visualisation. Data on reliable upper reference ranges are missing.

designCross-sectional whole body MRI data from the population-based Study of Health in Pomerania were analysed. The width of the common bile duct (CBD) and the pancreatic duct (PD) was determined. We aimed to describe the distribution of physiological duct diameters on MRCP in a population of healthy subjects and to identify factors influencing duct size.

resultsAfter excluding pre-existing pancreaticobiliary conditions, CBD and PD diameters from 938 and 774 healthy individuals, respectively, showed a significant increase with age (p<0.0001) and exceeded the conventional upper reference limit of normal in 10.9% and 18.2%, respectively. Age-dependent upper reference limits of duct diameters were delineated with non-parametric quantile regression, defined as 95th percentile: for CBD up to 8 mm in subjects <65 years and up to 11 mm in subjects ≥65 years. For the PD reference diameters were up to 3 mm in subjects <65 years and up to 4 mm in subjects ≥65 years.

conclusionsThis is the first population-based study delineating age-adjusted upper reference limits of CBD and PD on MRCP. We showed that up to 18.2% of healthy volunteers would have needed diagnostic workup, if the conventional reference values were used. The utilisation of the adapted reference levels may help to avoid unnecessary investigations and thus to reduce healthcare expenditure and test-related adverse events.

Indexed as

Cholangiopancreatography, Magnetic ResonancePancreatic DuctsAgedCohort StudiesCommon Bile DuctCross-Sectional StudiesHumansReference Valuescholangiocarcinomadiagnostic and therapeutic endoscopyepidemiologyMagnetic Resonance Imagingpancreatic cancer

Identifiers

PMID36828626
PMCPMC10423481

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.