Hello and thanks for the query,
I would doubt this is a new cancer. This may likely be a reflection of advancing metastatic lung cancer
. Also, if he is in pain they may be giving him pain medication which can sometimes slow down the normal movement of the bowels causing distention. Also, if there are electrolyte abnormalities this can also cause issues with distention of the bowels. Hospice care should be ableto adequately focus on excellent comfort care measures to maximize quality of life for him.
Thanks again for the query. I can appreciate that you are dealing with a very stressful situation. Please let us kno if we can be of any assistance in the future.