68Ga-FAPI PET/CT Distinguishes the Reactive Lymph Nodes From Tumor Metastatic Lymph Nodes in a Patient With Nasopharyngeal Carcinoma.

Shang, Qihang; Zhao, Long; Pang, Yizhen; Yu, Yifeng; Chen, Haojun · Clin Nucl Med · 2022

case_report · Level V

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Abstract

Accurate clinical staging is crucial for managing nasopharyngeal carcinoma (NPC). However, false-positive finding of cervical lymph nodes in 18F-FDG PET/CT and MRI may lead to unnecessary chemotherapy for NPC. In this case, we report a patient with NPC who was incorrectly diagnosed with bilateral cervical lymph node metastases by both 18F-FDG PET/CT and MRI. Subsequent pathology results showed proliferating lymphoid cells with no signs of tumor metastasis. Interestingly, no abnormal 68Ga-FAPI uptake was observed in the nonmetastatic reactive lymph nodes. Therefore, 68Ga-FAPI PET/CT may be useful for assessment of pretreatment lymph node status in NPC.

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