An Unusual Cardiac Metastasis: Right Atrial Chondrosarcoma Diagnosed With Multimodality Cardiac Imaging

摘要

class="kwd-title">Keywords: Chondrosarcoma, Right atrial mass, Transthoracic echocardiogram, Transesophageal echocardiogram, Cardiac magnetic resonance imaging class="head no_bottom_margin" id="sec1title">IntroductionArising from cartilage-producing chondrocytes, chondrosarcoma (CS) is the second most common bone tumor, with an estimated incidence of one in 200,000 people. CS typically presents as a local tumor in the pelvis, proximal long bones, ribs, scapulae, and vertebrae between ages 40 and 75 years, with a slight male predominance. CS often follows an indolent course, with a favorable prognosis following surgical resection. However, hematogenous spread, most commonly to the lungs, portends a poor prognosis. Metastatic CS to the myocardium has only rarely been described in case reports. This article highlights the features of cardiac CS on echocardiography, cardiac magnetic resonance imaging (CMR), gross visualization, and pathology.