Different Appearances of 3 Malignancies in 68Ga-PSMA-11 Versus 18F-FDG PET/CT

Clin Nucl Med. 2021 Jul 1;46(7):e358-e359. doi: 10.1097/RLU.0000000000003538.

Abstract

Prostate-specific membrane antigen (PSMA) overexpression has been described in various malignancies. Hereby we present a case of a 69-year-old man simultaneously diagnosed with prostate cancer, esophageal adenocarcinoma, and HCC (hepatocellular carcinoma). 18F-FDG PET/CT showed pathological uptake in the esophageal adenocarcinoma and the primary prostate tumor, whereas 68Ga-PSMA-11 PET/CT performed for staging of the histopathologically confirmed prostate cancer revealed the primary tumor and significant uptake in the HCC. This finding is remarkable because the high physiological liver uptake of 68Ga-PSMA-11 may hamper the detection of small lesions.

Publication types

  • Case Reports
  • Comparative Study

MeSH terms

  • Aged
  • Edetic Acid / analogs & derivatives*
  • Fluorodeoxyglucose F18*
  • Gallium Isotopes
  • Gallium Radioisotopes
  • Humans
  • Male
  • Neoplasms / diagnostic imaging*
  • Oligopeptides*
  • Positron Emission Tomography Computed Tomography*

Substances

  • Gallium Isotopes
  • Gallium Radioisotopes
  • Oligopeptides
  • gallium 68 PSMA-11
  • Fluorodeoxyglucose F18
  • Edetic Acid