In 18 cases with cancer of 8cm and bigger in diameter,4 lymph node involvement (22%)around left pulmonary vein, 18 nodal involvement( 100%) at left gastric artery, 16(88%)at trachea carina and 1 at left pulmonary artery were found.

• 8cm以上病例18例；其中左下肺静脉淋巴结4例(22%25)有转移；胃左淋巴结18例(100%25)有转移；气管隆突淋巴结16例(88%25)有转移.；左肺动脉淋巴结1例(5