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Case Reports
. 2025 Apr 1;4(2):1-5.
doi: 10.56305/001c.133593. eCollection 2025.

Diffuse Large B Cell Lymphoma Presenting as a Cardiac Mass Complicated by Atrial Arrhythmia

Julie Jiyun Lee  1 , Ramzy Jandali  2
Affiliations
Case Reports

Diffuse Large B Cell Lymphoma Presenting as a Cardiac Mass Complicated by Atrial Arrhythmia

Julie Jiyun Lee et al. J Brown Hosp Med. .

Abstract

Cardiac involvement in diffuse large B-cell lymphoma (DLBCL) is uncommon and often presents with nonspecific symptoms, such as chest pain and dyspnea, which can lead to challenges in diagnosis. Cardiac lymphomas most often arise in the right atrium or the pericardium, and can thus result in tachyarrhythmias, pericardial effusions, and heart failure symptoms, all of which can further complicate clinical management. Diagnosis typically requires comprehensive imaging such as cardiac magnetic resonance imaging (MRI) or positron emission tomography-computed tomography (PET-CT), as transthoracic echocardiography (TTE) alone is limited in the diagnosis of intracardiac masses, as well as tissue biopsy for histopathological confirmation. Treatment typically involves systemic chemotherapy, though outcomes are generally poor, as cardiac involvement is generally a late manifestation of DLBCL. This case underscores the importance of early recognition, need for comprehensive imaging and tissue diagnosis, and multidisciplinary care in managing cardiac lymphoma, as well as the challenges associated with refractory disease.

Keywords: atrial arrhythmia; cardiac lymphoma; diffuse large B cell lymphoma; pericardial effusion.

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Conflict of interest statement

The authors declare they have no conflicts of interest

Figures

A close-up of an x-ray of a chest AI-generated content may be incorrect.
Figure 1a.. Axial view of right atrial mass measuring 4.5cm x 4.74cm on CTA.
A ultrasound of a fetus AI-generated content may be incorrect.
Figure 1b.. Axial view of right atrial mass measuring 3.61cm x 3.11cm on cardiac MRI with infiltration into the chamber wall.
See this image and copyright information in PMC

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