A Consistently Elevated Pineal Gland Uptake of 18 F-MFBG as a Physiological Normal Variant.

Clin Nucl MedOct 20, 2026 (epub)

Keyu Zhang, Xiaoya Wang, Bingyan Zhang et al.

✦ AI-curated · Sources linked

Case in brief

A 3-year-old girl with high-risk neuroblastoma underwent 18F-MFBG PET/CT to assess treatment response. Imaging showed focal pineal gland uptake, also present on concurrent 68Ga-DOTATATE PET/CT. Brain MRI showed no evidence of metastasis, and follow-up 18F-MFBG PET/CT showed unchanged uptake at the same site. The concordant tracer findings, negative MRI, and stability on serial imaging supported interpreting the pineal activity as a physiological normal variant rather than metastatic disease.

What made this case unusual

Pineal uptake was seen with both 18F-MFBG and 68Ga-DOTATATE and remained stable on follow-up 18F-MFBG imaging, despite the patient’s high-risk neuroblastoma.

Diagnostic / clinical pearl

In a child with neuroblastoma, focal pineal 18F-MFBG uptake should be interpreted alongside MRI, uptake on other tracers, and interval imaging; concordant physiological uptake and stability supported a normal variant in this case.

Source

Published in Clin Nucl Med. This summary was written by xxcode from the publication's abstract and metadata. It is not peer reviewed and is not a substitute for the original article. For clinical decisions, review the original publication.

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