Accumulation of FDG in central venous catheter mimicking lymph node metastasis (PET CT)

Case contributed by Dr Jayanth Keshavamurthy


PET CT was performed for routine surveillance of colon cancer.

Patient Data

Age: 60
Gender: Male

PET CT showing an FDG avid lesion in the right atrium at the tip of the port-a-cath with no anatomic abnormality seen on the corresponding CT images.

The patient received radiotracer into the port-a-cath as their was poor intravenous access.

This should not be called a metastasis.

Case Discussion

Differential for intense FDG activity in the port includes infection, inflammation, FDG stasis, FDG emboli, and thrombus which can be either FDG-avid or photopenic.

Caveat: avoid FDG injection via a port as much as possible.

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Case information

rID: 63301
Published: 24th Sep 2018
Last edited: 27th Sep 2018
Inclusion in quiz mode: Included
Institution: Augusta University

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