I know it's not benign. It's got to be a malignant tumor.

我知道这不是良性的。肯定是恶性肿瘤。

In July of 2004, he undergoes surgery to remove a malignant tumor in his pancreas.

2004年7月，他接受了胰腺恶性肿瘤的切除手术。

We won't know if this tumor's malignant or benign until we get the lab report back.

在拿到化验报告之前，我们不知道这个肿瘤是恶性还是良性。

It's got to be a malignant tumor.

应该是恶性肿瘤。

A third class of tumors are called borderline tumors because they have features that are intermediate between the other benign and malignant tumors.

第三类肿瘤是中性肿瘤，因为其特点介于其他良性和恶性肿瘤之间。

As the cancer cells divide they can sometimes gain the ability to penetrate through the basement membrane, and at that point it's considered a malignant tumor.

当癌细胞分裂时，它们有时能获得穿透基底膜的能力，此时便被认为是恶性肿瘤。