However, about 25% of cases exhibit frank malignant features of prominent nuclear pleomorphism (as in this case), mitotic activity or necrosis.
However, about 25% of cases exhibit frank malignant features of prominent nuclear pleomorphism (as in this case), mitotic activity or necrosis.
然而，大约25%的病例显示恶性特征诸如明显核多型现象（比如此例）、核分裂活性或者坏死。