Evidence map›Paper›PMID 41536738›Full record

ArticleEuropean heart journal. Case reports2026

Isolated atrial myocarditis presenting with atrial arrhythmias and diffuse thickening of the atrial wall diagnosed via atrial biopsy: a case report.

Makoto Edayoshi, Kensuke Yokoi, Takanori Yamaguchi, Nobuhide Watanabe, Koichi Node

Abstract readCase Reports
PubMed Full text at PMC Publisher
In one paragraph

Article in European heart journal. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Makoto EdayoshiDepartment of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.
Kensuke YokoiDepartment of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.
Takanori YamaguchiDepartment of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.ORCID https://orcid.org/0000-0002-0613-8591
Nobuhide WatanabeDivision of Cardiology, Shimane University, Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.ORCID https://orcid.org/0000-0002-7625-7553
Koichi NodeDepartment of Cardiovascular Medicine, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.ORCID https://orcid.org/0000-0002-2534-0939

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Isolated atrial myocarditis is rarely diagnosed in non-open-heart surgical cases. We report a case of isolated lymphocytic atrial myocarditis presenting with atrial arrhythmias, syncope, and atrial wall thickening, confirmed histologically by transcatheter atrial biopsy and multimodality imaging. Case summary: A 69-year-old woman presented to the emergency department with general fatigue and a syncopal episode. Electrocardiogram revealed sick sinus syndrome (SSS) with a heart rate of 40 beats/min. Laboratory tests indicated a mild inflammatory response without cardiac enzyme level elevation. Transthoracic echocardiography demonstrated left atrial wall thickening and mild pericardial effusion. Contrast-enhanced computed tomography revealed a thrombus in the left atrial appendage, Discussion: In cases of isolated atrial myocarditis presenting with atrial arrhythmias and atrial wall thickening, a combination of imaging modalities and histological evaluation by atrial biopsy may be helpful in establishing a definitive diagnosis.

Indexed as

Atrial fibrillationCase reportEuropean Society of Cardiology CurriculumIsolated atrial myocarditisSick sinus syndrome

Identifiers

PMID41536738
PMCPMC12798813

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