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.

中文翻译：

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68Ga-DOTATATE PET/CT 与 68Ga-Pentixia 在默克尔细胞癌 PET/CT 成像中的比较

默克尔细胞癌（MCC）是一种侵袭性神经内分泌癌，具有高转移率和死亡率。我们展示了一名 62 岁男性 MCC 的⁶⁸ Ga-DOTATATE PET/CT和⁶⁸ Ga-pentixia PET/CT结果。68 ^Ga -DOTATATE PET/CT和⁶⁸ Ga-pentixiafor PET/CT均显示扫描范围内病变的放射性摄取增加。与⁶⁸ Ga-DOTATATE PET/CT相比， ⁶⁸ Ga-pentixia PET/CT病灶的摄取更高。我们的案例表明⁶⁸ Ga-pentixiafor 可能是评估 MCC 的有前途的放射性示踪剂。