Key result
Echo and CT reveal a suspected LA myxoma as pulmonary tumor extension via the pulmonary vein.
Why the study?
Primary lung carcinoma may rarely extend into the left atrium, mimicking a cardiac myxoma on initial echocardiography and presenting diagnostic and treatment challenges.
Case Report (n=1)
Primary lung carcinoma can rarely extend into the left atrium via the pulmonary vein, mimicking a cardiac myxoma on initial echocardiography.
Supports multimodality imaging for LA masses; hypothesis-generating for rare lung cancer extensions, trials needed.
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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Mirdamadi et al. (2026) conducted a case report in Left atrial mass / Lung carcinoma (n=1). Echocardiography and CT revealed that a left atrial mass initially suspected as a myxoma in a 73-year-old man was an extension of a pulmonary tumor through the pulmonary vein.
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