The patient will likely experience nausea, loss of bowel control, and episodes of depression, and screaming fits should not disconcert concerned caregivers.  Exhaustion should be expected as well, but remember the process is supposed to be harder on the cancerous cells, so its best not to give up before it is done. Another reason to continue the treatment is to prevent a re-occurrence of the disease before it is completely eliminated.

True, some forms of cancer can be fatal.  

The bad cells burrow away in areas sometimes hard to identify. And sometimes seemingly good cells turn bad in an instant. And unfortunately, we've seen it recently.  New cancer cells appeared before our very eyes, from as far away as the UP in fact.  The threshold has been met and now many think the patient is terminal, but perhaps its possible our treatment will have an effect to buy some time.  It may even help if we can get the patient to stop smoking. Perhaps even if we can re-instill the will to live.

We're not ready to give up yet.

However, there is the possibility that the bad cells will cling on long enough that the treatment hurts many of the good cells. We are sorry in advance for what needs to be done.