Unusual Increased Blood Pool Activity on 68Ga-DOTATATE PET/CT in a Patient With Metastatic Neuroendocrine Disease.
2021
ABSTRACT 68Ga-DOTATATE is a well-established, positron-emitting, somatostatin receptor-binding radiopharmaceutical. We present an unusual case of transiently increased blood pool uptake of 68Ga-DOTATATE in a patient with well-differentiated stage IV neuroendocrine tumor, with Ki-67 <2% (WHO grade 1) maintained on lanreotide. During serial 68Ga-DOTATATE PET/CT examinations, increased blood pool accumulation of presumably unbound 68Ga was demonstrated, which could impact the Kenning score and lead to a false treatment response assessment.
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