The latest word on my father is that the cancer has definitely not spread to any other organs. All of the lymph nodes they took and tested were clean.
Now he has to strengthen up for the radiation therapy and, possibly, eventually, surgery to remove the upper lobe of his left lung.
I wish to extend a heartfelt word of gratitude to those of you whose kind words and warm thoughts reached me and my dad. It's odd, this blog thing, that a loose -- if small -- network of strangers can care about another stranger in a dark hour.
Thank you.