Incidentalomas and mimics in PETCT

PETCT (positron emission tomography – computed tomography) is a combination of functional imaging (PET) and anatomical imaging (CT). It is now integral in most cancer patients pathways; altering the staging in approximately a third of patients. It is also used in the evaluation of treatment response, aiding future management decisions. As a result PETCT imaging, in particular FDG PETCT (F18-fluorodeoxyglucose), is increasingly being reviewed and discussed in the multidisciplinary team setting, often by non PETCT specialist radiologists. Knowledge of PETCT incidentalomas and mimics is important. In this article we examine some of these findings in more detail and suggest a systematic method for evaluating FDG avid lesions.

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