While there are a multitude of incidents over the past couple years, here is a recent one about parents are refusing to allow chemotherapy on their kid and the kid appears to be ignorant of the situation.
Judge rules family can't refuse chemo for boy
The kid is pretty much a goner without the treatment.
So, should parents be allowed to refuse life saving treatment for their children?
[EDIT] Based on Etheral's insightful marks, assume at least for the discussion that the medical live saving treatment is medically sound and likely to save the child's life [/EDIT]