What is the clinical evidence from this study?

Study design: Case Report. Population: Primary intracardiac thymoma (n=1). Intervention: 18F-FDG PET/CT.

What does this research mean for the field?

18F-FDG PET/CT effectively evaluates the malignant phenotype and systemic staging of primary intracardiac thymoma, presenting as a heterogeneous hypermetabolic mass. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This case report aims to describe the imaging features and clinical implications of primary intracardiac thymoma.

June 10, 2026Clinical Nuclear Medicine

A Rare Case of Primary Intracardiac Thymoma on 18F-FDG PET/CT

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Key result

18F-FDG PET/CT identifies a rare primary right atrial thymoma and aids in systemic staging.

Why the study?

18F-FDG PET/CT imaging features of primary intracardiac thymoma have rarely been described in the literature.

Population

A 63-year-old woman presenting with progressive facial edema

Design

Case report

Authors

LLLi LiuTianjin University of Traditional Chinese Medicine HYHaifeng YuanWeinan Central Hospital YWYì WángBGI Group (China)

Discussion

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Implication

Research meaning:* Extends the differential diagnosis of right atrial tumors, leaving open its broader diagnostic accuracy.

Key Points

This case report aims to describe the imaging features and clinical implications of primary intracardiac thymoma.
Patient presented with facial edema and underwent 18F-FDG PET/CT imaging.
Surgical resection of the identified mass in the right atrium was performed.
Pathological confirmation of a primary type B1 thymoma was obtained postoperatively.
18F-FDG PET/CT revealed a large hypermetabolic mass in the right atrium without distant metastases.
Postoperative pathology confirmed the diagnosis of primary type B1 thymoma.
The case adds to the limited literature on imaging features of intracardiac thymoma.

Study Design

Type

Case Report (n=1)

Structured PICO

Population

A 63-year-old woman presenting with progressive facial edema who was diagnosed with a primary type B1 thymoma originating from the right atrium.

Exposure

18F-FDG PET/CT imaging and surgical resection

Outcome

Diagnosis and imaging features of primary intracardiac thymoma

18F-FDG PET/CT is valuable for evaluating the malignant phenotype and systemic staging of rare primary intracardiac thymomas.

Cite This Study

Liu et al. (2026) conducted a case report in Primary intracardiac thymoma (n=1). 18F-FDG PET/CT was evaluated. 18F-FDG PET/CT successfully identified a rare primary type B1 thymoma originating from the right atrium, demonstrating its utility in evaluating tumor malignant phenotype and systemic staging.

synapsesocial.com/papers/6a2901886f82f25be989dcf9 https://doi.org/10.1097/rlu.0000000000006562

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A Rare Case of Primary Intracardiac Thymoma on 18F-FDG PET/CT

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

A Rare Case of Primary Intracardiac Thymoma on 18F-FDG PET/CT

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

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