Fig. 2.
a PET scan showing extensive lymphadenopathy in the pelvis and abdomen consistent with the diagnosis of RT. b PET scan after 3 cycles of combination chemotherapy with rituximab-ifosfamide/carboplatin/etoposide (R-ICE). c PET scan showing excellent metabolic response with virtual complete interval resolution of the previously noted extensive FDG avid lymphadenopathy with ibrutinib therapy.