The present paper reports a 28-year-old male with an asymptomatic mali
gnant Triton tumor of the lung. Chest radiographs revealed a mass in t
he left hilum.The left lower lobe including the tumor and the mediasti
nal lymph node was resected. There was no metastasis or tumor recurren
ce during the one-year period following the surgical procedure. To our
knowledge, this is the first case report of a primary pulmonary malig
nant Triton tumor.