Increased F-18 FDG Uptake in the Right Auricle of a Displaced Heart: Potential Cause of a False-Positive Pathologic Mediastinal Node

A positron emission tomography (PET) imaging study was performed in a patient with a history of lung cancer. The scan demonstrated increased fluorine-18 fluorodeoxyglucose uptake in the right auricle of a displaced heart. This same finding was also present on a prior PET study performed at an outsid...

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Bibliographic Details
Published in:Clinical nuclear medicine 2005-02, Vol.30 (2), p.97-99
Main Authors: Kim, Susanne, Ding, You-Guang, Krynyckyi, Borys R, MacHac, Josef, Kim, Chun K
Format: Article
Language:English
Subjects:
Aged
Diagnosis, Differential
False Positive Reactions
Female
Fluorodeoxyglucose F18 - pharmacokinetics
Heart Atria - abnormalities
Heart Atria - diagnostic imaging
Heart Atria - metabolism
Humans
Lung Neoplasms - diagnostic imaging
Lymph Nodes - diagnostic imaging
Lymph Nodes - metabolism
Lymphatic Metastasis
Mediastinum - diagnostic imaging
Radionuclide Imaging
Radiopharmaceuticals - pharmacokinetics
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Description
Summary:A positron emission tomography (PET) imaging study was performed in a patient with a history of lung cancer. The scan demonstrated increased fluorine-18 fluorodeoxyglucose uptake in the right auricle of a displaced heart. This same finding was also present on a prior PET study performed at an outside facility at which time it was erroneously interpreted to represent a pathologic mediastinal lymph node. This normal variant, particularly in patients with distorted anatomy, should be kept in mind to avoid a false-positive interpretation and to prevent unnecessary additional diagnostic workup or intervention.
ISSN:0363-9762
1536-0229
DOI:10.1097/00003072-200502000-00005