moving into all areas of something and difficult to stop

an invasive disease 侵袭性疾病

They treated the cancer with non-invasive methods/surgery (= not cutting into the body). 他们用无创方法／手术治疗癌症。

An invasive organism is one that has arrived in a place from somewhere else and has a harmful effect on that place.

The Asian long-horned beetle is one of the newest and most harmful invasive species in the United States. 亚洲长角甲壳虫是最新也是最有害的侵入美国的生物之一。