Initial diagnose, Hodgkin, IIb, bulky. After 4 cycle of ABVD (total of 8 sessions), PET pos. SUV 14.No significant shirinkage in mass. Is it refractory?

It is behaving like. Over 90% of cases with Hodgkin's would shrink following ABVD chemotherapy. It seems your tumor is refractory. You will need further treatment. Seek a Hodgkin's(Lymphoma) expert at a major Cancer Center for further(new) treatment. Let us know if you have trouble finding further help/answers.