Papillary Tumor of the Pineal Gland With Discordant FDG and FAPi Uptake.

Preet, Komal; Purohit, Priyavrat; Mittal, Bhagwant Rai; Kumar, Rajender; Singh, Harmandeep; Shukla, Jaya; Bal, Amanjit; Madan, Renu · Clin Nucl Med · 2025

case_report · Level V

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Abstract

In recent years, 68Ga-FAP inhibitor has emerged as a possible substitute radiotracer to FDG for imaging of most of the tumors. Here, we report a 7-year-old girl diagnosed with recurrent papillary tumor of the pineal gland, presenting with complaints of headache and vomiting. 18F-FDG PET/CT revealed an FDG-avid enhancing lesion in the posterior part of the third ventricle. Negligible FAPI uptake was noted on the corresponding 68Ga-FAPI-46 PET/CT images, highlighting the scope of 18F-FDG PET/CT in this realm.

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