malignant blue nevus

例句：

1. 1. The child has a malignant blue nevus on hisforehead.
   这个孩子额头上有一块恶性蓝痣。
2. 2. The doctor advised the patient to havethe malignant blue nevusremoved surgically.
   医生建议病人通过手术去除那块恶性蓝痣。
3. 3. Themalignant blue nevus was discovered during aroutine medical check-up.
   这块恶性蓝痣是在一次常规体检中发现的。