Evidence map›Paper›PMID 32343481›Full record

ArticleESC heart failure2020

Idiopathic giant cell myocarditis or cardiac sarcoidosis? A retrospective audit of a nationwide case series.

Kaj Ekström, Anne Räisänen-Sokolowski, Jukka Lehtonen, Hanna-Kaisa Nordenswan, Mikko I Mäyränpää, Markku Kupari

Abstract read
In one paragraph

Article in ESC heart failure, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–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

22 citing papers in PubMed.

  1. Redefining Cardiac Sarcoidosis with Advanced Imaging and Therapeutic Strategies.American journal of cardiovascular drugs : drugs, devices, and other interventions · 2026
    Review
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  5. Article
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  7. Review
  8. Cardiac Sarcoidosis: A Comprehensive Clinical Review.Reviews in cardiovascular medicine · 2024
    Review
  9. Cardiac magnetic resonance in histologically proven eosinophilic myocarditis.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2023
    Article
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  11. Review
  12. Article
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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

6 authors.

Kaj EkströmHeart and Lung Center, Helsinki University and Helsinki University Hospital, Helsinki, Finland.
Anne Räisänen-SokolowskiDepartment of Pathology, Helsinki University and Helsinki University Hospital, Helsinki, Finland.
Jukka LehtonenHeart and Lung Center, Helsinki University and Helsinki University Hospital, Helsinki, Finland.
Hanna-Kaisa NordenswanHeart and Lung Center, Helsinki University and Helsinki University Hospital, Helsinki, Finland.
Mikko I MäyränpääDepartment of Pathology, Helsinki University and Helsinki University Hospital, Helsinki, Finland.
Markku KupariHeart and Lung Center, Helsinki University and Helsinki University Hospital, Helsinki, Finland.

Funding

Suomen Lääketieteen Säätiö -Sydäntutkimussäätiö
6 · The paper itself

Abstract

aimsCardiac sarcoidosis (CS) and giant cell myocarditis (GCM) are inflammatory cardiomyopathies sharing histopathological and clinical features. Their differentiation is difficult and susceptible of confusion and apparent mistakes. The possibility that they represent different phenotypes of a single disease has been debated. METHODS AND

resultsWe made a retrospective audit of 73 cases of GCM diagnosed in Finland since the late 1980s. All available histological material was reanalyzed as were other examinations pertinent to the distinction between GCM and CS. Finding granulomas in or outside the heart was considered diagnostic of CS and exclusive of GCM. Altogether 45 of the 73 cases of GCM (62%) were reclassified as CS. In all except one case, this was based on finding sarcoid granulomas that either had been originally missed (n = 29) or misinterpreted (n = 11) or were found in additional posttransplant myocardial specimens (n = 3) or samples of extracardiac tissue (n = 1) accrued over the disease course. Supporting the reclassification, patients relocated to the CS group had less heart failure at presentation (prevalence 20% vs. 46%, P = 0.017) and better 1 year transplant-free survival (82% vs. 45%, P = 0.011) than patients considered to represent true GCM.

conclusionsRecognizing granulomas in or outside the heart remains a challenge for the pathologist. Given that CS and GCM are considered distinct diseases and granulomas exclusive of GCM, many cases of GCM, if thoroughly scrutinized, may need reclassification as CS. However, whether CS and GCM are truly different entities or parts of a one-disease continuum has not yet been conclusively settled.

Indexed as

CardiomyopathiesMyocarditisSarcoidosisFinlandGiant CellsHumansRetrospective StudiesCardiac sarcoidosisDifferential diagnosisGiant cell myocarditisHeart failure

Identifiers

PMID32343481
PMCPMC7261562

What OpenQuestion holds

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Registered trials

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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.