Evidence map›Paper›PMID 37566274›Full record

SynthesisEuropean radiology2024

MRI with DWI improves detection of liver metastasis and selection of surgical candidates with pancreatic cancer: a systematic review and meta-analysis.

Stephan Altmayer, Larissa Maria Armelin, Jussara Soares Pereira, Lis Vitoria Carvalho, Justin Tse, Patricia Balthazar, Martina Zaguini Francisco, Guilherme Watte, Bruno Hochhegger

Erratum issuedAbstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in European radiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
4.6field-weighted citation impact, top 5% of its field
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, 20 citations in OpenAlex.

  1. Review
  2. Pancreatic cancer.Nature reviews. Disease primers · 2026
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. [Advances in Surgical Treatment Following Conversion Therapy for Pancreatic Cancer].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2025
    Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 7 institutions in 2 countries.

Stephan AltmayerDepartment of Radiology, Stanford University, 300 Pasteur Drive, Suite H1330, Stanford, USA. altmayer@stanford.edu.ORCID http://orcid.org/0000-0001-9214-1916
Larissa Maria ArmelinFaculdade de Medicina, Universidade Federal de Minas Gerais, 190 Prof Alfredo Balena Ave, Belo Horizonte, Brazil.
Jussara Soares PereiraHospital Geral de Goiania, 6479 Anhanguera Ave, Goiânia, Brazil.
Lis Vitoria CarvalhoFaculdade de Medicina, Universidade de São Paulo, 455 Dr Arnaldo Ave, São Paulo, Brazil.
Justin TseDepartment of Radiology, Stanford University, 300 Pasteur Drive, Suite H1330, Stanford, USA.
Patricia BalthazarDepartment of Radiology, Emory University, 201 Dowman Dr, Atlanta, USA.
Martina Zaguini FranciscoDepartment of Radiology, Universidade Federal de Ciencias da Saude de Porto Alegre, 245 Sarmento Leite St, Porto Alegre, Brazil.
Guilherme WatteDepartment of Radiology, Universidade Federal de Ciencias da Saude de Porto Alegre, 245 Sarmento Leite St, Porto Alegre, Brazil.
Bruno HochheggerDepartment of Radiology, University of Florida, 1600 SW Archer Rd, Gainesville, USA.
Stanford University · USUniversidade Federal de Ciências da Saúde de Porto Alegre · BREmory University · USInstituto de Gastroenterologia de Goiânia · BRUniversidade de São Paulo · BRUniversidade Federal de Minas Gerais · BRUniversity of Florida · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo perform a systematic review and meta-analysis to evaluate if magnetic resonance imaging (MRI) with diffusion weighted imaging (DWI) adds value compared to contrast-enhanced computed tomography (CECT) alone in the preoperative evaluation of pancreatic cancer.

methodsMEDLINE, EMBASE, and Cochrane databases were searched for relevant published studies through October 2022. Studies met eligibility criteria if they evaluated the per-patient diagnostic performance of MRI with DWI in the preoperative evaluation of newly diagnosed pancreatic cancer compared to CECT. Our primary outcome was the number needed to treat (NNT) to prevent one futile surgery using MRI with DWI, defined as those in which CECT was negative and MRI with DWI was positive for liver metastasis (i.e., surgical intervention in metastatic disease missed by CECT). The secondary outcomes were to determine the diagnostic performance and the NNT of MRI with DWI to change management in pancreatic cancer.

resultsNine studies met the inclusion criteria with a total of 1121 patients, of whom 172 had liver metastasis (15.3%). The proportion of futile surgeries reduced by MRI with DWI was 6.0% (95% CI, 3.0-11.6%), yielding an NNT of 16.6. The proportion of cases that MRI with DWI changed management was 18.1% (95% CI, 9.9-30.7), corresponding to an NNT of 5.5. The per-patient sensitivity and specificity of MRI were 92.4% (95% CI, 87.4-95.6%) and 97.3% (95% CI, 96.0-98.1).

conclusionMRI with DWI may prevent futile surgeries in pancreatic cancer by improving the detection of occult liver metastasis on preoperative CECT with an NNT of 16.6. CLINICAL RELEVANCE STATEMENT: MRI with DWI complements the standard preoperative CECT evaluation for liver metastasis in pancreatic cancer, improving the selection of surgical candidates and preventing unnecessary surgeries. KEY POINTS: • The NNT of MRI with DWI to prevent potential futile surgeries due to occult liver metastasis on CECT, defined as those in which CECT was negative and MRI with DWI was positive for liver metastasis, in patients with pancreatic cancer was 16.6. • The higher performance of MRI with DWI to detect liver metastasis occult on CECT can be attributed to an increased detection of subcentimeter liver metastasis.

Indexed as

Liver NeoplasmsPancreatic NeoplasmsDiffusion Magnetic Resonance ImagingHumansMagnetic Resonance ImagingSensitivity and SpecificityTomography, X-Ray ComputedContrast enhanced CTDiffusion magnetic resonance imagingMagnetic resonance imagingMetastasisPancreatic neoplasm

Identifiers

PMID37566274
OpenAlexW4385751249

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.