Pneumonia with Intense <sup>68</sup>Ga-FAPI Uptake Mimicking Metastasis on <sup>68</sup>Ga-FAPI PET/CT in a Patient with Rectal Cancer
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P: 237-238
October 2023

Pneumonia with Intense 68Ga-FAPI Uptake Mimicking Metastasis on 68Ga-FAPI PET/CT in a Patient with Rectal Cancer

Mol Imaging Radionucl Ther 2023;32(3):237-238
1. University of Health Sciences Türkiye, İstanbul Training and Research Hospital, Clinic of Nuclear Medicine, İstanbul, Türkiye
2. University of Health Sciences Türkiye, İstanbul Training and Research Hospital, Clinic of Medical Oncology, İstanbul, Türkiye
No information available.
No information available
Received Date: 18.07.2022
Accepted Date: 04.02.2023
Publish Date: 20.10.2023
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ABSTRACT

A 70-year-old man with newly diagnosed rectum adenocarcinoma was referred to 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) for staging, and 68Ga-fibroblast activation protein inhibitor (FAPI)-04 PET/CT for ongoing trial. Both 18F-FDG PET/CT and 68Ga-FAPI-04 PET/CT showed intense uptake in the primary rectal tumor, and also in nodular areas in the right lung. Due to intense 68Ga-FAPI-04 and 18F-FDG uptake, the lung lesions were considered as metastases. However the lesions were reduced in size on CT after 20 days antibiotherapy and diagnosed as pneumonia.

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