Results All tumors were found inencapsulated and invading the surroundings, including pericardium, superior vena cava, left or right innominate vein, mediastinal pleura, phrenic nerve and lung.

• 结果所有肿瘤均无完整包膜并侵犯周围器官，依次为心包、上腔静脉、左右无名静脉、胸膜、膈神经和肺。