Invasive tumors were seen in 16. 7%,31. 3%,31. 4%,70. 8%,100% and 100% of type A, AB, B1, B2, B3 and C thymomas, respectively.

• A型、AB型、B1型、B2型、B3型和C型胸腺瘤中发生浸润或转移者分别为16.；7%25、31