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Related Experiment Video

Updated: Jul 14, 2026

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques

Published on: June 11, 2019

Radiological reasoning: Right atrial mass.

Anil K Attili¹, Rolf Gebker, Philip N Cascade

¹Department of Radiology, University of Michigan, 1500 E Medical Center Dr., Ann Arbor, MI 48109, USA. aattili@umich.edu

AJR. American Journal of Roentgenology

|May 23, 2007

Summary

A right atrial mass, initially detected incidentally in a patient with a history of urothelial cancer, was diagnosed as a cardiac myxoma. Cardiac MRI findings, while not definitive, suggested a benign intracavitary mass.

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Last Updated: Jul 14, 2026

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques

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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

Published on: July 20, 2022

Area of Science:

Cardiology
Radiology
Pathology

Background:

Intracavitary cardiac masses can be challenging to diagnose, especially when found incidentally.
Distinguishing benign from malignant masses is crucial for patient management.

Observation:

Cardiac MRI revealed a pedunculated right atrial mass in an older male patient with a history of urothelial cancer.
The mass demonstrated homogeneous intermediate signal intensity on T1- and T2-weighted images, with no signal drop-out on fat-suppressed sequences.
No enhancement was observed on perfusion or delayed contrast-enhanced imaging.

Findings:

The observed MRI characteristics, including the presence of a stalk and non-infiltrating nature, are suggestive of a cardiac myxoma.
While not pathognomonic, these features aid in differentiating myxoma from thrombus, metastases, or primary cardiac malignancy.
Pathologic diagnosis confirmed the mass as a right atrial myxoma.

Implications:

This case highlights the utility of cardiac MRI in characterizing intracavitary masses.
Understanding specific MRI features can improve the diagnostic accuracy of cardiac myxomas.
Accurate diagnosis of cardiac masses is essential for appropriate treatment strategies and patient outcomes.