ArticleClinical case reports2026
Intracardiac Extension of Lung Carcinoma Presenting as an Atrial Myxoma: A Case Report.
Article in Clinical case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Left atrial (LA) mass is most commonly presumed to be a cardiac myxoma, as it is approximately 75% of primary cardiac tumors, with a strong predilection for the LA. In rare instances, primary lung carcinoma may extend to the LA, creating an intracardiac mass indistinguishable from a myxoma on initial echocardiographic assessment. We report a Persian 73-year-old man with progressive dyspnea and a left atrial mass initially suspected as a myxoma. Echocardiography and CT revealed extension of a pulmonary tumor into the atrium through the pulmonary vein. This case highlights the diagnostic and treatment challenges of intracardiac extension, which is rare but should be considered by the cardiologist.
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