Multimodal Imaging of Papillary Muscle-Origin Left Ventricular Myxoma.

ABSTRACT:

Background

Cardiac myxomas most commonly originate in the left atrium, whereas occurrences in the ventricles are rare, accounting for only 3% to 4% of cases. Their pseudoinvasive growth, which can mimic malignancy, poses significant diagnostic challenges.

Case summary

A 49-year-old asymptomatic man underwent transthoracic echocardiography, revealing a 27.5 × 16.5 mm moderately echogenic mass in the midlateral left ventricle, adjacent to the anterior papillary muscle. Further examination showed the mass with low-density margins merging with the chordae tendineae on computed tomography (54 HU), homogeneous T2 hyperintensity with delayed "cloud-like" enhancement on cardiac magnetic resonance imaging, and moderate metabolic activity (SUV_max = 7.8) on positron emission

SUBMITTER: Liu L 

PROVIDER: S-EPMC12790187 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature