Role of Positron Emission Tomography in Diffuse Large B-cell Lymphoma.

For initial staging and at end of treatment to document remission status, PET is the standard imaging modality. Interim scanning remains investigational. Surveillance PET is not beneficial in the majority of patients. PET has also been used to predict outcome in the pre-autologous transplant setting. PET in the pre-allogeneic setting has a less established benefit. There is limited data on its use after transplant.