Oh, Dapsam, what a worrisome situation and after so much recent stress in your life. I am so sorry.
I am hoping for the best for Duke. Our Pekingese, now deceased, had a prostate tumor when he was 10 years old. His odds were about the same as Duke's and his tumor turned out to be benign. He lived almost another 6 years, passing shortly before his 16 birthday. I hope Duke has many more years ahead.