Three patients who had a nonsmall cell carcinoma of the lung with inva
sion of the left atrium without distal metastases (T4 N0-2 M0), underw
ent a radical pneumonectomy with a partial resection of the involved l
eft atrium. Two of them had postoperative adjuvant therapy. The first
patient died nine months after the operation from a ruptured thoracoab
dominal aneurysm; the second patient died three months later from comp
lications of adjuvant therapy; and the third patient is alive and free
of metastases more than two years after the operation. Whenever techn
ically feasible, nonsmall cell lung carcinoma that has invaded the lef
t atrium without distal metastases should be resected in block with th
e left atrium.