Comparison of 68Ga-DOTATATE PET/CT and 68Ga-Pentixiafor PET/CT Imaging in a Case of Merkel Cell Carcinoma

Abstract

Abstract Merkel cell carcinoma (MCC) is an aggressive neuroendocrine carcinoma with a high rate of metastasis and mortality. We present 68Ga-DOTATATE PET/CT and 68Ga-pentixiafor PET/CT findings of MCC in a 62-year-old man. Both 68Ga-DOTATATE PET/CT and 68Ga-pentixiafor PET/CT revealed increased radioactive uptake of lesions in the scan range. Compared with 68Ga-DOTATATE PET/CT, the lesions showed higher uptake in 68Ga-pentixiafor PET/CT. Our case showed that 68Ga-pentixiafor might be a promising radiotracer in the evaluation of MCC.