Pulmonary Sarcomatoid Carcinoma with Left Atrial Extension and Atrial Fibrillation

Atrial fibrillation is commonly seen in atrial dilation and fibrosis of the atrium. As cancer patients live longer, cardiac metastasis is an increasingly common finding in this population, occurring in up to 14% of cancer patients. This problem holds significance in relation to operability and type of treatment. Cardiac invasion through the pulmonary veins is a rare occurrence, as is sarcomatoid carcinoma of the lung especially in non-smoking women. We present, to our knowledge, the first case report of a female non-smoker with bilateral sarcomatoid carcinoma of the lung with atrial invasion through the pulmonary vein, which had atrial fibrillation as one of her presenting findings.