YOU SAID:

i may or not have brain cancer

INTO JAPANESE

私は脳癌を持っているかもしれないし、持っていない

BACK INTO ENGLISH

I might have brain cancer, and I don't have

INTO JAPANESE

私は脳癌を持っているかもしれないし、私は持っていない

BACK INTO ENGLISH

I might have brain cancer, and I don't have