thank you ....you are correct ....he had the radiation 30 treatments on Head neck for original diagnoses ....then when it spread to the thoracic lymph nodes he had another 30 rounds of radiation and then he started Avelumab ....immune therapy ....and his tumor was 12.7 cm ...now is 5.4 after the completion of radiation and 8 rounds of Avelumab....so we are hoping