Myxoma chest x ray

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Maria Fernanda Villarreal, M.D. [2] Cafer Zorkun, M.D., Ph.D. [3] Ahmad Al Maradni, M.D. [4]

Overview

There are no specific chest x-ray findings associated with cardiac myxoma, the results can be reported as normal.

Key Chest X-Ray Findings in Cardiac Myxoma

• There are no specific chest x-ray findings associated with cardiac myxoma, the results can be reported as normal.
• Related imaging findings include cardiomegaly, left atrial enlargement, vascular redistribution, prominent pulmonary trunk, and intracardiac tumoral calcification (rare).

Gallery

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  Lateral chest radiograph from a 16-year-old girl with syncope and bacterial endocarditis. The radiograph demonstrates two areas of dense calcification (arrowheads) overlying the posterior aspect of heart. The posterior-anterior (PA) view confirmed location in the heart (not shown). At surgery a calcified myxoma of the right atrium was removed. Image courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology

Imaging Technique	Features	Description	Advantages	Limitations
Two- or three-dimensional echocardiography	Echocardiography is usually the initial modality used for identification and evaluation of cardiac myxomas.	Hyperechogenic lesions with a well-defined stalk. Protrusion into the ventricles is a common finding.	Real-time imaging Tumor mobility and distensibility.	Limited views of the mediastinum and cannot be used to evaluate extracardiac manifestations of disease. TEE is an invasive imaging technique. TTE is limited by the imaging window, which can vary with the patient and operator experience.
MRI	Evaluation of cardiac masses and is of greatest value when echocardiographic findings are suboptimal or when the lesion has an atypical location or appearance.	Cardiac myxomas appear spherical or ovoid with lobular contours, irregular in shape. T1 : Low to intermediate signal, but areas of hemorrhage may be high. T1 C+ (Gd): shows enhancement (important discriminator from a thrombus) demonstrates uniform heterogeneous enhancement.	MRI allows imaging in multiple planes. Provides some functional information such as, flow direction and flow velocity in large vessels.	Cannot show calcification. High susceptibility to motion artifact. Dependent on regular electrocardiographic rhythms and cardiac gating.
CT	CT can be used to accurately image the heart and surrounding mediastinum.	Intracardiac heterogeneously low attenuating mass. The attenuation is usually lower than that of myocardium. Calcification is common	CT provides better soft-tissue contrast.	There is no real-time true imaging with CT and imaging planes are limited to those allowed by angulation of the gantry. There is no evaluation of small moving structures, such as the cardiac valves.
Angiography	Coronary angiography may be helpful to detect vascular supply of the tumor by the coronary arteries.	The angiographic findings of cardiac myxoma demonstrate feeding vessels, contrast medium poolings, and clusters of tortuous vessels that correspond to tumor vasculature	Angiography can detect the concomitant coronary disease and the unique vascular appearances of cardiac myxoma. Helpful for surgical evaluation.	Invasive imaging technique
Chest x-ray	Chest x-ray has no particular findings associated with cardiac myxoma.	Results can be normal.	Low cost May be helpful, if calcifications present.	Does not provide a diagnosis.

References

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