Sounds right. But maybe not for all cancer tumors. My SIL had Breast Cancer and hid it. For apparently a long time. Her health was never questioned until her adult children went to do laundry and found blood all over her shirt.
They drove her to ER. Doctor examined her and said, Well obviously you have had this a long time, Why haven't you come in? The tumor was basically outside her body now, bloody. She told him she didn't want to live in this World anymore. She wanted no treatment. 😭

There's was nothing at this point of the cancer that could be done. She was placed in Hospice and died a couple months later. She was 57. it's been 15 years she's gone. I didn't even know cancer could come out of the body. She was the Aunt that sat on the floor for hours with all the little kids and played with all their new Christmas toys with them. I still can't believe it.