恶性瘤

例句：

1. 1. The cancer is malignant and requires immediate treatment.
   这个癌症是恶性的，需要立即治疗。
2. 2. The patient was diagnosed with a malignant tumor in the liver.
   患者被诊断出肝脏有恶性肿瘤。
3. 3.Malignant tumors often spread quickly to other parts of the body.
   恶性肿瘤通常迅速扩散到身体的其他部位。