难治疗的 meaning in Chinese

intractable
rebellious

Background : intracerebral hemorrhage is the least treatable form of stroke and is associated with high mortality
背景：脑出血是最难治疗的中风类型，有很高的病死率。
If it is a superficial growth and it s completely removed , again , the prognosis is excellent . however , if it is deep and has spread to other tissues , it is one of the most difficult cancers to treat and unfortunately , the prognosis remains poor
如果癌细胞只长于皮肤表面，并完全切除，预后同样良好。可是，如果癌细胞已深入皮肤，并扩散至其他组织，那就变成其中一种最难治疗的癌症，而不幸的是，预后效果都不是太理想