Direct extension of cancer between pulmonary veins and the left atrium.
D001984:Bronchial Neoplasms; D002283:Carcinoma, Bronchogenic; D002294:Carcinoma, Squamous Cell; D006325:Heart Atria; D006338:Heart Neoplasms; D006801:Humans; D008175:Lung Neoplasms; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011667:Pulmonary Veins