Treatment options can change when health conditions change wether from being palliative to curative, and vice versa, but is not the typical or ideal situation. My treatments stopped just from 5 days chemo, and was supposed to have 3 cycles of induction chemo, and then 7 weeks Chemoradiation for stage 4 tonsil cancer, and two metatastic lymph nodes, but couln't due to my critical health issues from chemo. While hospitalized, no talk was made for further treatments or even diagnostic tests, for 8 months, only my survival to critical illnesses was a concern. i was left all that time wondering what cancer was doing to my body. I was also in the critical illness nursing home, one a floor where everyone was left for dead. I was only able did radiation 1.2 years later, when I partially recovered, and receieved curative radiation, no chemo, since the doctor said that would kill me, and turned me down two more times for chrmo, so yes, they may be able to do treatment anytime when health improves, if still treatable. Keep in mind, I was 48, and that factors in, as does other comorbidities.