Direct Extension of Bronchogenic Carcinoma Through Pulmonary Veins into the Left Atrium Mimicking Left Atrial Myxoma

Metastatic Rectal Adenocarcinoma Presenting as a Giant Left Atrial Mass: Resection Combined With Right Lower Lobectomy

“…However, an intracavitary tumor thrombus, particularly within the left atrium, could progress to peripheral embolization similar to atrial myxomas, as was the case in our patient [4]. Tumors may also produce symptoms of heart failure and congestion; occur on the valve, causing obstruction or regurgitation; and invade the myocardium, causing conduction abnormalities, arrhythmias, or pulmonary symptoms resulting from direct invasion of the lung.…”

“…The incidence of pulmonary metastases arising in patients with stage III rectal cancer [1] is as high as 13.4%; however, extension into the atrium is limited to individual case reports [4][5][6][7][8]. Despite the rarity of reported colorectal cardiac metastases in the existing literature, the incidence was noted to be significantly higher in autopsy series than the literature would suggest [5].…”

“…Echocardiography is the primary diagnostic modality for these patients because it can identify a left atrial mass, which may represent a myxoma or a tumor thrombus [2][3][4]. Furthermore, echocardiography can also assess for obstruction of mitral flow, which may be an indication for an emergent operation.…”

Report of a lung carcinoma extended to the left atrium through pulmonary vein

“…Left atrial tumor direct extension via pulmonary veins is uncommon and the literature search shows more cases involving sarcoma than direct lung extension of bronchogenic carcinoma (7). Guha and colleagues (2011) presenting an important left atrial extension of lung (12) and also by Watanabe and Kubo (6).…”

Invasion of poorly differentiated large‐cell neuroendocrine tumor of the lung through right pulmonary veins into the left atrium: A very rare case report

“…However, the intracavitary involvement is very rare and it may just occur via direct invasion from the lung, mediastinal masses, or even extension of the tumors through the venous routes. 1 The right chambers of the heart are also most commonly involved by intracavitary metastasis but invasion of the left atrium (LA) through the venous routes is highly exceptional. 2 Neuroendocrine tumors are comprised of a heterogeneous group of malignancies, usually arising from the gastrointestinal (GI) tract and the bronchopulmonary system, but they can also develop in a wide variety of locations.…”