Small bowel obstruction... which means that his bowel is twisted. Evidently common after surgery with scar tissue, etc.... Cancer can sometimes contribute, too. ??
Treatment is continue with fluids and manage the pain and most of the time it straightens itself out. If it doesn't, they will put a tube in through his nose (NG tube) to help somehow (can't remember those specifics).
Now, we're waiting for a room.