Positive 67Ga-citrate scans in patients receiving Corynebacterium parvum

Gallium-67 citrate imaging for the staging of lymphomas was performed in three patients receiving Corynebacterium parvum (C. parvum) immunotherapy. Unexpected uptake at the site of C. parvum injections was identified and although the mechanism of localization is not determined by this study, similarities between C. parvum's known actions and the postulated mechanism of 67Ga-citrate localization are compared.