KIT and teratoma: In the biopsy group, c-KIT expression was as follows: 9 (40%) of 22 SEM [9 (45%) of 20 diffuse SEM, 0 (0%) of 2 intratubular SEM], 1 (6%) of 16 SCT, 1 (100%) of 1 teratoma, and 4 (100%) of 4 mixed LCT/SEM.