a surgeon can remove those polyps

手术能够移除这些息肉
and prevent them from progressing into a more serious disease.

防止它们演变为更严重的疾病
Polyps on their own aren't necessarily cancerous

息肉未必会癌变
but they can develop into cancer,

但是他们能够发展为癌症
there's an association with that.

其中有一些联系
So, why not remove them surgically before they have the chance?

因此为何不在它们癌变之前就手术切除呢
Surgeries often remove--used to remove local tumors in the lung,

手术通常用来移除局部肿瘤
in the brain, the colon, the prostate,

肺部脑部结肠前列腺的局部肿瘤
so surgery is a well established form of cancer treatment.

因此手术是一种完善的癌症治疗手段
Radiation can also be used to treat cancer.

放疗也能够用于治疗癌症
This relates to the subject of imaging

这和我们几周前
that we talked about several weeks ago.

所讨论的医学影像学有关