68Ga-PSMA PET/CT Detecting Metastatic Lesion of RCC: Missed on 18F-FDG PET/CT

Clin Nucl Med. 2023 Jun 1;48(6):e294-e296. doi: 10.1097/RLU.0000000000004648.

Abstract

Renal cell carcinoma (RCC) accounts for ~2% of global cancers and deaths. Survival depends on initial staging and shows poor survival rate in metastatic disease. CT and MRI are used for evaluating RCC, and PET/CT is used for metastatic disease assessment. We report a case of RCC, where both 18F-FDG and 68Ga-PSMA PET/CT showed increased uptake in liver metastatic lesions; however, a subhepatic peritoneal deposit showed uptake only in PSMA. Also, liver lesions were seen better in PSMA owing to lesser background uptake, suggesting a possibility of 68Ga-PSMA being a potential tracer for RCC evaluation.

Publication types

  • Case Reports

MeSH terms

  • Carcinoma, Renal Cell* / diagnostic imaging
  • Carcinoma, Renal Cell* / pathology
  • Fluorodeoxyglucose F18
  • Gallium Radioisotopes
  • Humans
  • Kidney Neoplasms* / diagnostic imaging
  • Kidney Neoplasms* / pathology
  • Positron Emission Tomography Computed Tomography

Substances

  • gallium 68 PSMA-11
  • Fluorodeoxyglucose F18
  • Gallium Radioisotopes