It’s not a tumor! A pictorial essay of hypermetabolic lung findings mimicking malignancy

Learning Objectives To identify benign hypermetabolic lung findings on FDG-PET.

FDG-PET imaging is routinely used in oncological workflows, including diagnosis, staging and restaging of patients with lung cancer. However, several benign lung conditions can also be metabolically active and can be erroneously interpreted as malignant processes on a FDG PET scan, falsely upstaging the disease. This pictorial essay demonstrates a spectrum of commonly encountered benign pulmonary findings that must be recognized in order to avoid false positive results

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