He is still just lying. “Stage 4” cancer means certain things, and hes denying them while not denying hes been diagnosed with Stage 4 cancer.
Maybe Jill and his doctor have not given him the whole story or he doesn’t remember what he has been told.
We have a friend being treated for prostate cancer and the meds have affected him cognitively.
For decades he had lied about matters great and small. Lied when there was no benefit to lying. Of course he’s lying about this. Soon he’ll be with Uncle Bosie